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description: thumb|Johann Friedrich Franz Burgmüller from a lithograph, c.1840 Johann Friedrich Franz Burgmüller, generally known as Friedrich Burgmuller (4 December 1806 – 13 February 1874) was a German pianist
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album: Burgmüller: 25 Études faciles et progressives, Op.100 & 18 Études de genre, Op. 109
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  track: 25 Études faciles et progressives, Op. 100: No. 15 in C Minor, Ballade
album: 18 Études de genre (sélection)
album: Burgmüller Rediscovered-Masterpieces for Piano, Vol II
album: Burgmüller Rediscovered-Masterpieces for Piano
album: Burgmüller: Collected Works for Piano
album: Friedrich Burgmüller: 18 Études, Op. 109
album: Burgmüller: 25 Études faciles et progressives, Op. 100
album: La Candeur
album: Friedrich Burgmüller "Progressive Piano Etudes" Op.100
album: Friedrich Burgmüller: 25 Easy and Progressive Studies, Op. 100 (Remastered)
album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
album: Friedrich Burgmüller: Etudes, Opus 109
album: Burgmuller - 12 Brilliant and Melodious Studies, Op.105
album: Etudes: Friedrich Burgmüller
album: Friedrich Burgmüller
album: 25 Études faciles et progressives, Op.100
album: 布格缪勒25首钢琴进阶练习曲
album: Friedrich Burgmüller: 25 Études faciles et progressives, Op. 100
album: Burgmüller Etudes, Opus 109 ：古典鋼琴
album: 布格缪勒钢琴进阶练习曲
album: 布格缪勒：25首钢琴进阶练习曲
album: Classical Folder Burgmüller
album: Julius Hei plays Burgmüller
album: Jovial Classics, Vol. 3: Burgmuller
album: Jovial Classics, Vol. 33: Burgmuller
album: 피아니스트가 연주한 브루크뮐러 25개 연습곡(Burgmuller 25 Etuden op.100) -김현정 글로리아 추천 솔로 I
album: Burgmüller: 25 Études faciles et progressives, Op. 100 & 18 Études, Op. 109
album: Franz Burgmüller, Progressive Pieces for Piano
album: ブルクミュラー : 25の練習曲 & 18の練習曲
album: 25 Études Faciles et Progressives, Vol. 2
album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
album: Burgmüller, 7 Little Studies for The Piano
album: Friedrich Burgmüller: 18 Characteristic Studies, Op. 109
album: Burgmüller: 25 études, Op. 100
album: Burgmüller: 25 Progressive Studies, Op. 100
album: Burgmüller: 18 Études, Op. 109
album: Burgmuller 25 Etuden Op.100

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Burgmüller Rediscovered-Masterpieces for Piano
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef686cfe1a0d46398fcb9d459b0e8e137c5fd08ec1549a2cd142ae9344076137. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPLR2313172.
  date published: 2026-07-31T22:27:44Z
audio: Angel’s voices (25 Easy and Progress Studies for the Piano, Op. 100, No. 21)
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Burgmuller - 25 Etudes Faciles et Progressives, Op.100
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date published: 2023-03-21
track: Burgmuller Op.100 No.1 - La Candeur
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  by artist: Melody Studio
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  additional property: OTSBitcoinBlockVerifyURL
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-31T09:25:34Z
  audio: Burgmuller Op.100 No.1 - La Candeur
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track: Burgmuller Op.100 No.2 - Arabesque
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  by artist: Friedrich Burgmüller
  by artist: Melody Studio
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    type: MusicAlbum
    date published: 2023-03-21
  genre: classical-piano
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011c0e30e7f707b9428fc64081e9465c5105545a0d1c307da64b0ac37107a64b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900204.
    date published: 2026-07-02T03:55:08Z
  audio: Burgmuller Op.100 No.2 - Arabesque
    type: AudioObject
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    additional property: Mode (Major/Minor)
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track: Burgmuller Op.100 No.3 - Pastorale
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  by artist: Friedrich Burgmüller
  by artist: Melody Studio
  in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
    type: MusicAlbum
    date published: 2023-03-21
  genre: classical-piano
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  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Burgmuller Op.100 No.3 - Pastorale
track: Burgmuller Op.100 No.4 - Petite reunion
track: Burgmuller Op.100 No.5 - Innocence
track: Burgmuller Op.100 No.6 - Progres
track: Burgmuller Op.100 No.8 - La gracieuse
track: Burgmuller Op.100 No.9 - La chasse
track: Burgmuller Op.100 No.11 - La bergeronette
track: Burgmuller Op.100 No.12 - Adieu
track: Burgmuller Op.100 No.15 - Ballade
track: Burgmuller Op.100 No.16 - Douce plainte
track: Burgmuller Op.100 No.20 - Tarentelle

OTSBitcoinBlockVerifyURL
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value: https://blockstream.info/api/block-height/960410

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900205

OTSTimestamp
type: PropertyValue
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5d1d3d4a03bf7887d13300c9d6751d30099a669b510f3c0e215d2a56030e5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900205.
date published: 2026-07-31T13:50:38Z

Burgmuller Op.100 No.3 - Pastorale
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
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additional property: Mode (Major/Minor)
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additional property: Time Signature
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additional property: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Instrumentalness
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additional property: Liveness
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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additional property: Key Name
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additional property: Mode Name
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Burgmuller Op.100 No.4 - Petite reunion
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duration ms: 101333
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
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genre: classical-piano
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040e843a72f2399273ac2116c72d9bf078abd9b78cd2e5dff2375ee496d2b80e. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900206.
  date published: 2026-08-01T03:13:03Z
audio: Burgmuller Op.100 No.4 - Petite reunion
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Burgmuller Op.100 No.5 - Innocence
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explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
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genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6482dd9e8888426266b2217869067064581c7b66bdb82323e84b3263914b6d14. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900207.
  date published: 2026-07-08T03:20:19Z
audio: Burgmuller Op.100 No.5 - Innocence
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  additional property: Mode (Major/Minor)
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Burgmuller Op.100 No.6 - Progres
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by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
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  date published: 2023-03-21
genre: classical-piano
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc41e180e16b8ee192733f62f5ec95439797b85f1c9ee06ed5e9a5bbc9593a. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900208.
  date published: 2026-07-31T08:38:45Z
audio: Burgmuller Op.100 No.6 - Progres
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  additional property: Musical Key
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    type: PropertyValue
    value: -22.977
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Burgmuller Op.100 No.8 - La gracieuse
type: MusicRecording
duration: PT1M3S
duration ms: 63600
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900210
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:35:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x251c0e32f324c01b61f28a07b19271eb3c21df37cdb0bc6cce6475da1ad3d451
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900210
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251c0e32f324c01b61f28a07b19271eb3c21df37cdb0bc6cce6475da1ad3d451. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900210.
  date published: 2026-07-31T21:25:57Z
audio: Burgmuller Op.100 No.8 - La gracieuse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 118.02
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.722
  additional property: Energy
    type: PropertyValue
    value: 0.166
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.197
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.679
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.287
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Burgmuller Op.100 No.9 - La chasse
type: MusicRecording
duration: PT1M17S
duration ms: 77250
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900211
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:26:33+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa21b69a1e70ede869add510ccd5eece3b8ad6a1a5a4ed1057de7c516d584d683
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900211
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21b69a1e70ede869add510ccd5eece3b8ad6a1a5a4ed1057de7c516d584d683. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900211.
  date published: 2026-07-31T17:29:52Z
audio: Burgmuller Op.100 No.9 - La chasse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.794
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.609
  additional property: Energy
    type: PropertyValue
    value: 0.141
  additional property: Speechiness
    type: PropertyValue
    value: 0.063
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.94
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.727
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.373
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Burgmuller Op.100 No.11 - La bergeronette
type: MusicRecording
duration: PT0M48S
duration ms: 48000
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900213
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T01:06:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb66fdbe5ae554067ac736a138a207dba65a619f19273f9173b78b6aefe73fa27
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960494
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960494
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900213
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66fdbe5ae554067ac736a138a207dba65a619f19273f9173b78b6aefe73fa27. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900213.
  date published: 2026-08-01T01:44:32Z
audio: Burgmuller Op.100 No.11 - La bergeronette
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.375
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.793
  additional property: Energy
    type: PropertyValue
    value: 0.231
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.909
  additional property: Liveness
    type: PropertyValue
    value: 0.14
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.221
  additional property: Loudness (dB)
    type: PropertyValue
    value: -17.797
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Burgmuller Op.100 No.12 - Adieu
type: MusicRecording
duration: PT1M7S
duration ms: 67500
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900214
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:05:09+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x776ae4d8b85fe5a651ba1a5c4a451a4c40747dcc31116f87b05e2e4c2584280c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900214
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776ae4d8b85fe5a651ba1a5c4a451a4c40747dcc31116f87b05e2e4c2584280c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900214.
  date published: 2026-07-08T03:22:41Z
audio: Burgmuller Op.100 No.12 - Adieu
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.727
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.527
  additional property: Energy
    type: PropertyValue
    value: 0.146
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.914
  additional property: Liveness
    type: PropertyValue
    value: 0.089
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.83
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.426
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Burgmuller Op.100 No.15 - Ballade
type: MusicRecording
duration: PT1M18S
duration ms: 78000
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900217
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T02:57:41+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x750f9d15f435779fa9741f32232a6bd5777bc0521e7124318d808877d9aa1c13
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960209
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960209
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900217
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T05:15:54Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750f9d15f435779fa9741f32232a6bd5777bc0521e7124318d808877d9aa1c13. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900217.
  date published: 2026-07-30T05:15:54Z
audio: Burgmuller Op.100 No.15 - Ballade
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.208
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.678
  additional property: Energy
    type: PropertyValue
    value: 0.243
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.948
  additional property: Liveness
    type: PropertyValue
    value: 0.095
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.463
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.86
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Burgmuller Op.100 No.16 - Douce plainte
type: MusicRecording
duration: PT1M3S
duration ms: 63692
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900218
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T11:07:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc9b45498eccf6b7b76d91cb6765948ff3ce16ea4d50169b36165eb86f3a7b173
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960397
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900218
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b45498eccf6b7b76d91cb6765948ff3ce16ea4d50169b36165eb86f3a7b173. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900218.
  date published: 2026-07-31T12:24:41Z
audio: Burgmuller Op.100 No.16 - Douce plainte
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.397
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.657
  additional property: Energy
    type: PropertyValue
    value: 0.328
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.712
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.846
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Burgmuller Op.100 No.20 - Tarentelle
type: MusicRecording
duration: PT1M31S
duration ms: 91000
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 25 Etudes Faciles et Progressives, Op.100
  type: MusicAlbum
  date published: 2023-03-21
genre: classical-piano
isrc code: KRB920900222
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T04:35:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe0a4419b1f6e961a8cf896c1f99db9e3ea0d32e950c5fb7da13e0c66d78485d2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960348
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960348
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900222
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:17:02Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0a4419b1f6e961a8cf896c1f99db9e3ea0d32e950c5fb7da13e0c66d78485d2. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB920900222.
  date published: 2026-07-31T05:17:02Z
audio: Burgmuller Op.100 No.20 - Tarentelle
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.836
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
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    date published: 2026-07-29T14:28:24Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T18:46:00Z
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  audio: Burgmuller Op.105 No.4 - La Campanella
track: Burgmuller Op.105 No.6 - L'Heure Du Soir
track: Burgmuller Op.105 No.7 - Feu Follet
track: Burgmuller Op.105 No.8 - Pres D'Une Fontaine
track: Burgmuller Op.105 No.9 - Allegrezza
track: Burgmuller Op.105 No.11 - Harpe Du Nord

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OpenTimestamps Proof of Existence
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date published: 2026-07-08T03:20:19Z

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Burgmuller Op.105 No.6 - L'Heure Du Soir
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Burgmuller Op.105 No.6 - L'Heure Du Soir
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Burgmuller Op.105 No.7 - Feu Follet
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subject of: OpenTimestamps Proof of Existence
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audio: Burgmuller Op.105 No.8 - Pres D'Une Fontaine
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c326ea9e4d4acceb18c1f2553741d757fabeb4c0baf9cf472f3c48cdd841709. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921959678.
  date published: 2026-07-31T22:27:44Z
audio: Burgmuller Op.105 No.9 - Allegrezza
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 172.367
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.584
  additional property: Energy
    type: PropertyValue
    value: 0.495
  additional property: Speechiness
    type: PropertyValue
    value: 0.06
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.861
  additional property: Liveness
    type: PropertyValue
    value: 0.302
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.813
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.24
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Major

Burgmuller Op.105 No.11 - Harpe Du Nord
type: MusicRecording
duration: PT2M26S
duration ms: 146470
explicit: false
by artist: Friedrich Burgmüller
by artist: Melody Studio
in album: Burgmuller - 12 Brilliant and Melodious Studies, Op.105
  type: MusicAlbum
  date published: 2023-01-24
genre: classical-piano
isrc code: KRB921959680
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T21:37:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa2e0b9925adce2684639d75d1facd9e6a236c784364758cf5fde7623165563ae
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921959680
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e0b9925adce2684639d75d1facd9e6a236c784364758cf5fde7623165563ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/KRB921959680.
  date published: 2026-07-08T03:22:41Z
audio: Burgmuller Op.105 No.11 - Harpe Du Nord
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.487
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.669
  additional property: Energy
    type: PropertyValue
    value: 0.117
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.866
  additional property: Liveness
    type: PropertyValue
    value: 0.192
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.34
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.369
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Etudes: Friedrich Burgmüller
type: MusicAlbum
date published: 2022-06-17

Friedrich Burgmüller
type: MusicAlbum
date published: 2022-06-01

25 Études faciles et progressives, Op.100
type: MusicAlbum
date published: 2022-04-22
track: La candeur / El candor / Artless mind
  type: MusicRecording
  duration: PT0M48S
  duration ms: 48337
  explicit: false
  by artist: Friedrich Burgmüller
  in album: 25 Études faciles et progressives, Op.100
    type: MusicAlbum
    date published: 2022-04-22
  genre: classical-piano
  isrc code: QZS642228179
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T08:17:19+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xac0399c12595d53611dc6447b7a089b2efa2765d567cda6d1fc59ee697433a32
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960370
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960370
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642228179
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T08:38:45Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0399c12595d53611dc6447b7a089b2efa2765d567cda6d1fc59ee697433a32. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642228179.
    date published: 2026-07-31T08:38:45Z
  audio: La candeur / El candor / Artless mind
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 118.806
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.335
    additional property: Energy
      type: PropertyValue
      value: 0.091
    additional property: Speechiness
      type: PropertyValue
      value: 0.034
    additional property: Acousticness
      type: PropertyValue
      value: 0.992
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.889
    additional property: Liveness
      type: PropertyValue
      value: 0.138
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.363
    additional property: Loudness (dB)
      type: PropertyValue
      value: -27.389
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Arabesque / Arabescos
  type: MusicRecording
  duration: PT0M48S
  duration ms: 48337
  explicit: false
  by artist: Friedrich Burgmüller
  in album: 25 Études faciles et progressives, Op.100
    type: MusicAlbum
    date published: 2022-04-22
  genre: classical-piano
  isrc code: QZS632207323
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T16:20:49+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xba2dc216caf6f317b03dff8b6dac8ab6871a495505c134667d046b623eed65f6
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959155
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959155
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632207323
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T16:43:41Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2dc216caf6f317b03dff8b6dac8ab6871a495505c134667d046b623eed65f6. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632207323.
    date published: 2026-07-22T16:43:41Z
  audio: Arabesque / Arabescos
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.767
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.437
    additional property: Energy
      type: PropertyValue
      value: 0.094
    additional property: Speechiness
      type: PropertyValue
      value: 0.033
    additional property: Acousticness
      type: PropertyValue
      value: 0.995
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.824
    additional property: Liveness
      type: PropertyValue
      value: 0.065
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.77
    additional property: Loudness (dB)
      type: PropertyValue
      value: -24.462
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Patorale / Pastoral
  type: MusicRecording
  duration: PT1M8S
  duration ms: 68300
  explicit: false
  by artist: Friedrich Burgmüller
  in album: 25 Études faciles et progressives, Op.100
    type: MusicAlbum
    date published: 2022-04-22
  genre: classical-piano
  isrc code: QZS672229771
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T17:34:54+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x4250ed1e250ee8173883250384024d0db85be994334e30ad9d7a88192e92987c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959159
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959159
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Patorale / Pastoral
track: Petite réunion / Reunión infantil / Children's party
track: Innocence / Inocencia
track: Progrès / Progreso / Progress
track: Courant limpide / Corriente cristalina / By the limpid stream
track: Gracieuse / Graciosa / The sweet grace
track: Adieu / Adiós / Farewell
track: Consolation / Consolación
track: La styrienne / La estiriana / Styrian
track: Ballade / Balada
track: Inquiétude / Inquietud / Discomfort
track: Ave Maria
track: Tarantelle / Tarantela
track: Harmonie des anges / Armonía de ángeles / Angel's voice
track: Barcarolle / Barcarola / Gondola song
track: Retour / Retorno / Returning home
track: L'hirondelle / La golondrina / The swallow

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672229771

OTSTimestamp
type: PropertyValue
value: 2026-07-22T17:48:40Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4250ed1e250ee8173883250384024d0db85be994334e30ad9d7a88192e92987c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672229771.
date published: 2026-07-22T17:48:40Z

Patorale / Pastoral
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 122.491
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.557
additional property: Energy
  type: PropertyValue
  value: 0.085
additional property: Speechiness
  type: PropertyValue
  value: 0.041
additional property: Acousticness
  type: PropertyValue
  value: 0.993
additional property: Instrumentalness
  type: PropertyValue
  value: 0.814
additional property: Liveness
  type: PropertyValue
  value: 0.159
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.435
additional property: Loudness (dB)
  type: PropertyValue
  value: -28.873
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

Petite réunion / Reunión infantil / Children's party
type: MusicRecording
duration: PT1M27S
duration ms: 87619
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS672233942
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T00:38:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x42a33c4217b093f574d0ab7dfc70ae442139efd0034a4629ad0a94f745c43b4e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960494
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960494
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672233942
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a33c4217b093f574d0ab7dfc70ae442139efd0034a4629ad0a94f745c43b4e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672233942.
  date published: 2026-08-01T01:44:32Z
audio: Petite réunion / Reunión infantil / Children's party
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 105.064
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.431
  additional property: Energy
    type: PropertyValue
    value: 0.099
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.643
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.622
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Innocence / Inocencia
type: MusicRecording
duration: PT0M51S
duration ms: 51953
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS662270536
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T16:02:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaa7a26b1821a92c5cd8b5e473036ea3be16d8544834807290458b91a39f8332a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960284
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960284
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662270536
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T17:23:26Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7a26b1821a92c5cd8b5e473036ea3be16d8544834807290458b91a39f8332a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS662270536.
  date published: 2026-07-30T17:23:26Z
audio: Innocence / Inocencia
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.296
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.416
  additional property: Energy
    type: PropertyValue
    value: 0.211
  additional property: Speechiness
    type: PropertyValue
    value: 0.045
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.905
  additional property: Liveness
    type: PropertyValue
    value: 0.171
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.31
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.058
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Progrès / Progreso / Progress
type: MusicRecording
duration: PT1M5S
duration ms: 65328
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHK2215702
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T10:42:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbdbc5f7a036b1c59958a39670c4bd926de80e2a9f573eae65e9a0d1191fae1fd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2215702
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbc5f7a036b1c59958a39670c4bd926de80e2a9f573eae65e9a0d1191fae1fd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHK2215702.
  date published: 2026-07-02T03:30:09Z
audio: Progrès / Progreso / Progress
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.924
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.359
  additional property: Energy
    type: PropertyValue
    value: 0.265
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.908
  additional property: Liveness
    type: PropertyValue
    value: 0.086
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.424
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.864
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Courant limpide / Corriente cristalina / By the limpid stream
type: MusicRecording
duration: PT0M40S
duration ms: 40064
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHM2290098
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T03:39:48+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8191c5b27693ead75b82daba20a0c03bbb963013aec6703d69b48f2bf5635ee2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960506
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960506
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2290098
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:50:58Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8191c5b27693ead75b82daba20a0c03bbb963013aec6703d69b48f2bf5635ee2. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2290098.
  date published: 2026-08-01T03:50:58Z
audio: Courant limpide / Corriente cristalina / By the limpid stream
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.686
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.257
  additional property: Energy
    type: PropertyValue
    value: 0.097
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.384
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.799
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Gracieuse / Graciosa / The sweet grace
type: MusicRecording
duration: PT1M3S
duration ms: 63842
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS672274932
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:57:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe465dc0ef9f49014e6ad360fb897ac52f67f1b25fd3dda1bbc6f5ddfe050592b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672274932
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe465dc0ef9f49014e6ad360fb897ac52f67f1b25fd3dda1bbc6f5ddfe050592b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS672274932.
  date published: 2026-07-08T03:20:19Z
audio: Gracieuse / Graciosa / The sweet grace
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.988
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.518
  additional property: Energy
    type: PropertyValue
    value: 0.165
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.95
  additional property: Liveness
    type: PropertyValue
    value: 0.148
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.442
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.079
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Adieu / Adiós / Farewell
type: MusicRecording
duration: PT1M17S
duration ms: 77185
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHM2272403
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-22T06:57:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeba83463e32bb45ee1a3661ae330bb9132d205d490420e29bb1c807433b21ce5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 959107
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/959107
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2272403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-22T07:19:23Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba83463e32bb45ee1a3661ae330bb9132d205d490420e29bb1c807433b21ce5. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2272403.
  date published: 2026-07-22T07:19:23Z
audio: Adieu / Adiós / Farewell
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 180.695
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.275
  additional property: Energy
    type: PropertyValue
    value: 0.058
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.882
  additional property: Liveness
    type: PropertyValue
    value: 0.066
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.288
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.617
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Consolation / Consolación
type: MusicRecording
duration: PT1M9S
duration ms: 69755
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS652218807
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:20:14+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd100c35700a6326f97efc5f36fe02710e81eb98ebc460e0fdfa87f8f99330668
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652218807
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd100c35700a6326f97efc5f36fe02710e81eb98ebc460e0fdfa87f8f99330668. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652218807.
  date published: 2026-07-31T22:27:44Z
audio: Consolation / Consolación
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 161.722
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.22
  additional property: Energy
    type: PropertyValue
    value: 0.092
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.145
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.24
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.212
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

La styrienne / La estiriana / Styrian
type: MusicRecording
duration: PT2M9S
duration ms: 129198
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHL2262356
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T20:54:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf5c9a56ed06a319ba987df5b8112c65653df582f8498349a8d61c0cc6e6e4b1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960468
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960468
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2262356
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T21:25:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf5c9a56ed06a319ba987df5b8112c65653df582f8498349a8d61c0cc6e6e4b1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2262356.
  date published: 2026-07-31T21:25:57Z
audio: La styrienne / La estiriana / Styrian
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 172.935
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.338
  additional property: Energy
    type: PropertyValue
    value: 0.055
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.846
  additional property: Liveness
    type: PropertyValue
    value: 0.098
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.336
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.965
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Ballade / Balada
type: MusicRecording
duration: PT1M14S
duration ms: 74213
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS642284376
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T17:07:57+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4188e935682826b1dc11ca40c2989af1640a37f6573b9466d7d576cfa734844
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642284376
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4188e935682826b1dc11ca40c2989af1640a37f6573b9466d7d576cfa734844. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS642284376.
  date published: 2026-07-02T03:55:08Z
audio: Ballade / Balada
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 153.913
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.284
  additional property: Energy
    type: PropertyValue
    value: 0.138
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.92
  additional property: Liveness
    type: PropertyValue
    value: 0.093
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.232
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.318
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Inquiétude / Inquietud / Discomfort
type: MusicRecording
duration: PT0M44S
duration ms: 44492
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHL2209232
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T23:03:15+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1b55a2d7b71ea9749d1988d9f33a3453d37d1c7dd858cfe059ce48e79d9e978e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2209232
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b55a2d7b71ea9749d1988d9f33a3453d37d1c7dd858cfe059ce48e79d9e978e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2209232.
  date published: 2026-07-08T03:22:41Z
audio: Inquiétude / Inquietud / Discomfort
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.326
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.258
  additional property: Energy
    type: PropertyValue
    value: 0.285
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.967
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.84
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.348
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.555
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Ave Maria
type: MusicRecording
duration: PT1M15S
duration ms: 75914
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHL2234980
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:26:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6ab3105d144fed0c6998be1e768b77708a66d01bfbd4646b493ee532f1e01649
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957122
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957122
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2234980
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:39:04Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab3105d144fed0c6998be1e768b77708a66d01bfbd4646b493ee532f1e01649. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2234980.
  date published: 2026-07-08T03:39:04Z
audio: Ave Maria
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 115.708
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.612
  additional property: Energy
    type: PropertyValue
    value: 0.029
  additional property: Speechiness
    type: PropertyValue
    value: 0.093
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.899
  additional property: Liveness
    type: PropertyValue
    value: 0.092
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.305
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.032
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

Tarantelle / Tarantela
type: MusicRecording
duration: PT1M37S
duration ms: 97990
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS652227637
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T17:12:21+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3263b43e79573fec54f533ea20691ad2e5cfbb7b2775f5472069e32224c484f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652227637
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3263b43e79573fec54f533ea20691ad2e5cfbb7b2775f5472069e32224c484f1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS652227637.
  date published: 2026-07-02T03:55:08Z
audio: Tarantelle / Tarantela
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 153.716
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.362
  additional property: Energy
    type: PropertyValue
    value: 0.188
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.937
  additional property: Liveness
    type: PropertyValue
    value: 0.154
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.366
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.079
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Harmonie des anges / Armonía de ángeles / Angel's voice
type: MusicRecording
duration: PT1M42S
duration ms: 102449
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS632219069
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T09:39:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8814355dd379bcdd86b5a573710d52e8ed4d77872af80c63aed55ff29df3a274
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632219069
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8814355dd379bcdd86b5a573710d52e8ed4d77872af80c63aed55ff29df3a274. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632219069.
  date published: 2026-07-02T03:55:08Z
audio: Harmonie des anges / Armonía de ángeles / Angel's voice
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.384
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.253
  additional property: Energy
    type: PropertyValue
    value: 0.025
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.975
  additional property: Liveness
    type: PropertyValue
    value: 0.12
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.189
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.741
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

Barcarolle / Barcarola / Gondola song
type: MusicRecording
duration: PT1M21S
duration ms: 81643
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHL2298014
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T11:11:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x414559c97433f1b7264f607f50007be3bc4b5527451cc498a13968f940c4249c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960099
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960099
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2298014
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:30:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414559c97433f1b7264f607f50007be3bc4b5527451cc498a13968f940c4249c. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHL2298014.
  date published: 2026-07-29T11:30:20Z
audio: Barcarolle / Barcarola / Gondola song
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.791
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.421
  additional property: Energy
    type: PropertyValue
    value: 0.037
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.919
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.849
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

Retour / Retorno / Returning home
type: MusicRecording
duration: PT1M3S
duration ms: 63811
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZMHM2276742
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T03:18:55+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa3aaca14805261e3c8ccc41b4e239bb2b034d4b104cb65aeca965df1f62d4261
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960503
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960503
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2276742
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T03:41:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3aaca14805261e3c8ccc41b4e239bb2b034d4b104cb65aeca965df1f62d4261. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMHM2276742.
  date published: 2026-08-01T03:41:24Z
audio: Retour / Retorno / Returning home
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.085
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.394
  additional property: Energy
    type: PropertyValue
    value: 0.2
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.935
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.152
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

L'hirondelle / La golondrina / The swallow
type: MusicRecording
duration: PT0M54S
duration ms: 54894
explicit: false
by artist: Friedrich Burgmüller
in album: 25 Études faciles et progressives, Op.100
  type: MusicAlbum
  date published: 2022-04-22
genre: classical-piano
isrc code: QZS632229197
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T21:53:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5c51795bfb25150cd6bc4a255c88837697cd6cf1c32a2dd5f17e5bdd1adec3f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960473
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960473
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632229197
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T22:27:44Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c51795bfb25150cd6bc4a255c88837697cd6cf1c32a2dd5f17e5bdd1adec3f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZS632229197.
  date published: 2026-07-31T22:27:44Z
audio: L'hirondelle / La golondrina / The swallow
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 148.51
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.267
  additional property: Energy
    type: PropertyValue
    value: 0.081
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.143
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.518
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.808
  additional property: Key Name
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Burgmüller Etudes, Opus 109 ：古典鋼琴
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布格缪勒钢琴进阶练习曲
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布格缪勒：25首钢琴进阶练习曲
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Classical Folder Burgmüller
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25 Études faciles et progressives, Op. 100: No. 25, La chevaleresque
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Julius Hei plays Burgmüller
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Jovial Classics, Vol. 3: Burgmuller
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Jovial Classics, Vol. 33: Burgmuller
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피아니스트가 연주한 브루크뮐러 25개 연습곡(Burgmuller 25 Etuden op.100) -김현정 글로리아 추천 솔로 I
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Franz Burgmüller, Progressive Pieces for Piano
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    value: https://explorer.copyrightchains.com/tx/0x1395660bdf128d8ca764ce925f0c430a1eb8de690d1de1ebb2edcbea61d59f2b
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960291
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960291
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800073
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T18:23:33Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1395660bdf128d8ca764ce925f0c430a1eb8de690d1de1ebb2edcbea61d59f2b. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800073.
    date published: 2026-07-30T18:23:33Z
  audio: 25の練習曲作品100 第2曲 アラベスク
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 142.241
    additional property: Musical Key
      type: PropertyValue
      value: 9
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.664
    additional property: Energy
      type: PropertyValue
      value: 0.059
    additional property: Speechiness
      type: PropertyValue
      value: 0.084
    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.911
    additional property: Liveness
      type: PropertyValue
      value: 0.069
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.615
    additional property: Loudness (dB)
      type: PropertyValue
      value: -28.348
    additional property: Key Name
      type: PropertyValue
      value: A
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: 25の練習曲作品100 第3曲 牧歌
  type: MusicRecording
  duration: PT1M27S
  duration ms: 87345
  explicit: false
  by artist: Friedrich Burgmüller
  by artist: Rintaro Akamatsu
  in album: ブルクミュラー : 25の練習曲 & 18の練習曲
    type: MusicAlbum
    date published: 2019-01-19
  genre: classical-piano
  isrc code: JPU941800074
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-27T07:56:36+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x82b6caa4f1a5282c449ae7c78a449edeadb1461e711d983f3fb4cc96c60639f2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956304
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 25の練習曲作品100 第3曲 牧歌
track: 25の練習曲作品100 第4曲 小さな集まり
track: 25の練習曲作品100 第5曲 無邪気
track: 25の練習曲作品100 第6曲 進歩
track: 25の練習曲作品100 第7曲 清い小川
track: 25の練習曲作品100 第8曲 優美
track: 25の練習曲作品100 第9曲 狩
track: 25の練習曲作品100 第10曲 やさしい花
track: 25の練習曲作品100 第11曲 せきれい
track: 25の練習曲作品100 第12曲 別れ
track: 25の練習曲作品100 第13曲 なぐさめ
track: 25の練習曲作品100 第14曲 シュタイヤーの踊り
track: 25の練習曲作品100 第15曲 バラード
track: 25の練習曲作品100 第16曲 ひそかな嘆き
track: 25の練習曲作品100 第17曲 おしゃべり
track: 25の練習曲作品100 第18曲 気がかり
track: 25の練習曲作品100 第19曲 アヴェ・マリア
track: 25の練習曲作品100 第20曲 タランテラ
track: 25の練習曲作品100 第21曲 天使の音楽
track: 25の練習曲作品100 第22曲 舟歌
track: 25の練習曲作品100 第23曲 再会
track: 25の練習曲作品100 第25曲 乗馬
track: 18の練習曲作品109 第2曲 真珠 (2022 Remaster ver.)
track: 18の練習曲作品109 第3曲 羊飼いの家路
track: 18の練習曲作品109 第4曲 ボヘミアン
track: 18の練習曲作品109 第8曲 アジタート
track: 18の練習曲作品109 第11曲 セレナーデ
track: 18の練習曲作品109 第13曲 雷雨
track: 18の練習曲作品109 第14曲 ゴンドラ漕ぎの歌 (2022 Remaster ver.)
track: 18の練習曲作品109 第15曲 風の精たち
track: 18の練習曲作品109 第18曲 紡ぎ歌

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/956304

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800074

OTSTimestamp
type: PropertyValue
value: 2026-07-02T03:55:08Z

OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b6caa4f1a5282c449ae7c78a449edeadb1461e711d983f3fb4cc96c60639f2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800074.
date published: 2026-07-02T03:55:08Z

25の練習曲作品100 第3曲 牧歌
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 165.168
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.384
additional property: Energy
  type: PropertyValue
  value: 0.039
additional property: Speechiness
  type: PropertyValue
  value: 0.09
additional property: Acousticness
  type: PropertyValue
  value: 0.996
additional property: Instrumentalness
  type: PropertyValue
  value: 0.841
additional property: Liveness
  type: PropertyValue
  value: 0.072
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.588
additional property: Loudness (dB)
  type: PropertyValue
  value: -35.543
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Major

25の練習曲作品100 第4曲 小さな集まり
type: MusicRecording
duration: PT1M47S
duration ms: 107482
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800075
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T06:00:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x62c99e59b859d6b85b2b7a01926119ef3fa20c113c616c507dbcc8bb2225ed19
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960360
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960360
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800075
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T06:42:11Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c99e59b859d6b85b2b7a01926119ef3fa20c113c616c507dbcc8bb2225ed19. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800075.
  date published: 2026-07-31T06:42:11Z
audio: 25の練習曲作品100 第4曲 小さな集まり
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.412
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.489
  additional property: Energy
    type: PropertyValue
    value: 0.045
  additional property: Speechiness
    type: PropertyValue
    value: 0.083
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.858
  additional property: Liveness
    type: PropertyValue
    value: 0.124
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.669
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.072
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第5曲 無邪気
type: MusicRecording
duration: PT0M54S
duration ms: 54652
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800076
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T21:18:59+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0dab150fc0d212825c3a7924f9b96b63a3a63cd6c80a0d954422d4b6b7f07032
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960317
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960317
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800076
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T21:35:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dab150fc0d212825c3a7924f9b96b63a3a63cd6c80a0d954422d4b6b7f07032. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800076.
  date published: 2026-07-30T21:35:24Z
audio: 25の練習曲作品100 第5曲 無邪気
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.868
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.445
  additional property: Energy
    type: PropertyValue
    value: 0.028
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.946
  additional property: Liveness
    type: PropertyValue
    value: 0.162
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.509
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.123
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第6曲 進歩
type: MusicRecording
duration: PT1M9S
duration ms: 69447
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800077
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T06:09:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7ddf2c7d38136a44050e8b0a82b990d26c93f821aa2e92ea8ac8d6b1b306f41d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800077
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddf2c7d38136a44050e8b0a82b990d26c93f821aa2e92ea8ac8d6b1b306f41d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800077.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第6曲 進歩
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.86
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.557
  additional property: Energy
    type: PropertyValue
    value: 0.087
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.919
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.768
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.288
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第7曲 清い小川
type: MusicRecording
duration: PT1M11S
duration ms: 71559
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800078
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T07:55:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2df33ebf0324de6fe59dac0c2eae8979c235598822380139dd07ed5859d4886
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800078
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2df33ebf0324de6fe59dac0c2eae8979c235598822380139dd07ed5859d4886. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800078.
  date published: 2026-07-02T03:55:08Z
audio: 25の練習曲作品100 第7曲 清い小川
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 91.72
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.328
  additional property: Energy
    type: PropertyValue
    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.902
  additional property: Liveness
    type: PropertyValue
    value: 0.073
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.114
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.025
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第8曲 優美
type: MusicRecording
duration: PT1M32S
duration ms: 92727
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800079
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:16:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x905046057cdd289aa2405a80f54f984dd61945c9ad87920d619ac0e117f24fed
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800079
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905046057cdd289aa2405a80f54f984dd61945c9ad87920d619ac0e117f24fed. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800079.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第8曲 優美
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 143.691
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.476
  additional property: Energy
    type: PropertyValue
    value: 0.012
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.883
  additional property: Liveness
    type: PropertyValue
    value: 0.097
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.338
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.364
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第9曲 狩
type: MusicRecording
duration: PT1M15S
duration ms: 75169
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800080
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T03:10:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb2b8e3811b8f95c1d505d51fbe51ee75e79f97638649120c5c296bb2f4b24d5b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960340
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960340
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800080
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T03:15:04Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b8e3811b8f95c1d505d51fbe51ee75e79f97638649120c5c296bb2f4b24d5b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800080.
  date published: 2026-07-31T03:15:04Z
audio: 25の練習曲作品100 第9曲 狩
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.749
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.569
  additional property: Energy
    type: PropertyValue
    value: 0.038
  additional property: Speechiness
    type: PropertyValue
    value: 0.06
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.907
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.549
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.004
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第10曲 やさしい花
type: MusicRecording
duration: PT1M45S
duration ms: 105283
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800081
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:29:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8ef05be54fdee1a69cb9dc14a70deb09fc63d15e35d9617a2aa3174f691461cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800081
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef05be54fdee1a69cb9dc14a70deb09fc63d15e35d9617a2aa3174f691461cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800081.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第10曲 やさしい花
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 135.983
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.448
  additional property: Energy
    type: PropertyValue
    value: 0.056
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.881
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.662
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.013
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第11曲 せきれい
type: MusicRecording
duration: PT0M49S
duration ms: 49194
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800082
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T04:07:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbfc6b92f231897097a477940d661c3f7fce2816d40016317e795568b197d2fbc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960344
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960344
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800082
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T04:14:58Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfc6b92f231897097a477940d661c3f7fce2816d40016317e795568b197d2fbc. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800082.
  date published: 2026-07-31T04:14:58Z
audio: 25の練習曲作品100 第11曲 せきれい
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.055
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.789
  additional property: Energy
    type: PropertyValue
    value: 0.054
  additional property: Speechiness
    type: PropertyValue
    value: 0.228
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.805
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.238
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.119
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第12曲 別れ
type: MusicRecording
duration: PT1M13S
duration ms: 73727
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800083
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:05:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x586b4f875a4f6abe82cf0e32478e205b9761d6e3c6a8b35a009182abc4d7fcac
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800083
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586b4f875a4f6abe82cf0e32478e205b9761d6e3c6a8b35a009182abc4d7fcac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800083.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第12曲 別れ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.62
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.389
  additional property: Energy
    type: PropertyValue
    value: 0.022
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.852
  additional property: Liveness
    type: PropertyValue
    value: 0.104
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.347
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.918
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25の練習曲作品100 第13曲 なぐさめ
type: MusicRecording
duration: PT1M35S
duration ms: 95921
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800084
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T04:48:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ee09f123ccd8855544207d00919a8cdb09b2e7c13a87931052b256b1596a089
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960348
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960348
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800084
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:17:02Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee09f123ccd8855544207d00919a8cdb09b2e7c13a87931052b256b1596a089. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800084.
  date published: 2026-07-31T05:17:02Z
audio: 25の練習曲作品100 第13曲 なぐさめ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 130.4
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.397
  additional property: Energy
    type: PropertyValue
    value: 0.03
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.941
  additional property: Liveness
    type: PropertyValue
    value: 0.068
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.163
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.189
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第14曲 シュタイヤーの踊り
type: MusicRecording
duration: PT1M59S
duration ms: 119894
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800085
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T08:08:39+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1f049cc661fe5908e26550b97bcf51cc80dc9abe1b002d0208f7887225917a2a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957039
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957039
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800085
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T12:58:18Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f049cc661fe5908e26550b97bcf51cc80dc9abe1b002d0208f7887225917a2a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800085.
  date published: 2026-07-07T12:58:18Z
audio: 25の練習曲作品100 第14曲 シュタイヤーの踊り
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 168.381
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
    type: PropertyValue
    value: 0.032
  additional property: Speechiness
    type: PropertyValue
    value: 0.075
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.818
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.434
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.198
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第15曲 バラード
type: MusicRecording
duration: PT1M22S
duration ms: 82093
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800086
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T18:15:08+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9baa51ddd7712bb0f88ebe4548481c8470530820a65cb6162f55309f69b78cab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960291
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960291
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800086
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:23:33Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa51ddd7712bb0f88ebe4548481c8470530820a65cb6162f55309f69b78cab. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800086.
  date published: 2026-07-30T18:23:33Z
audio: 25の練習曲作品100 第15曲 バラード
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 142.757
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.602
  additional property: Energy
    type: PropertyValue
    value: 0.035
  additional property: Speechiness
    type: PropertyValue
    value: 0.142
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.951
  additional property: Liveness
    type: PropertyValue
    value: 0.09
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.209
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.254
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第16曲 ひそかな嘆き
type: MusicRecording
duration: PT1M32S
duration ms: 92225
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800087
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T05:46:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x942d88d9c2c6096f1e81b96a46ea465f1c447420bb25ce5245644dd6c4b774f1
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960355
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960355
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800087
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T05:49:18Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942d88d9c2c6096f1e81b96a46ea465f1c447420bb25ce5245644dd6c4b774f1. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800087.
  date published: 2026-07-31T05:49:18Z
audio: 25の練習曲作品100 第16曲 ひそかな嘆き
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.934
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.543
  additional property: Energy
    type: PropertyValue
    value: 0.013
  additional property: Speechiness
    type: PropertyValue
    value: 0.091
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.938
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.368
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.976
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25の練習曲作品100 第17曲 おしゃべり
type: MusicRecording
duration: PT0M58S
duration ms: 58970
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800088
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T18:36:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8533c745c1907c60ccebd69a5ee29ed38818117b1291c570714769a747b97756
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960294
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960294
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800088
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T18:46:00Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533c745c1907c60ccebd69a5ee29ed38818117b1291c570714769a747b97756. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800088.
  date published: 2026-07-30T18:46:00Z
audio: 25の練習曲作品100 第17曲 おしゃべり
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.473
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.053
  additional property: Speechiness
    type: PropertyValue
    value: 0.086
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.858
  additional property: Liveness
    type: PropertyValue
    value: 0.15
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.428
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.254
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第18曲 気がかり
type: MusicRecording
duration: PT0M51S
duration ms: 51721
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800089
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T15:38:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfbcad43e79f24c9b8bfd3ac30424fa140d616331ef8a83cd22e370a5f04ad540
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957145
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957145
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800089
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T08:56:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcad43e79f24c9b8bfd3ac30424fa140d616331ef8a83cd22e370a5f04ad540. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800089.
  date published: 2026-07-08T08:56:20Z
audio: 25の練習曲作品100 第18曲 気がかり
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 147.267
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.331
  additional property: Energy
    type: PropertyValue
    value: 0.106
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.816
  additional property: Liveness
    type: PropertyValue
    value: 0.146
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.661
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.36
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第19曲 アヴェ・マリア
type: MusicRecording
duration: PT1M54S
duration ms: 114067
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800090
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:56:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x616ca1c8429c9e153103052ae3223a6ce3d1ee704c4cf8733b1f32beb7bbda94
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800090
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616ca1c8429c9e153103052ae3223a6ce3d1ee704c4cf8733b1f32beb7bbda94. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800090.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第19曲 アヴェ・マリア
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 94.139
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.527
  additional property: Energy
    type: PropertyValue
    value: 0.004
  additional property: Speechiness
    type: PropertyValue
    value: 0.145
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.852
  additional property: Liveness
    type: PropertyValue
    value: 0.057
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.137
  additional property: Loudness (dB)
    type: PropertyValue
    value: -37.774
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第20曲 タランテラ
type: MusicRecording
duration: PT1M43S
duration ms: 103399
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800091
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T01:02:35+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1ad6540b76eade085e3cc2ef95d76851ad929dcec59293358af443dac7e3d9ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956856
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956856
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800091
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T01:25:57Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad6540b76eade085e3cc2ef95d76851ad929dcec59293358af443dac7e3d9ee. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800091.
  date published: 2026-07-06T01:25:57Z
audio: 25の練習曲作品100 第20曲 タランテラ
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 141.779
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.485
  additional property: Energy
    type: PropertyValue
    value: 0.097
  additional property: Speechiness
    type: PropertyValue
    value: 0.061
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.931
  additional property: Liveness
    type: PropertyValue
    value: 0.088
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.591
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.227
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25の練習曲作品100 第21曲 天使の音楽
type: MusicRecording
duration: PT2M11S
duration ms: 131230
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800092
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:57:40+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9869cbba70be77f4f04365a46e45ebab6354e6a9f67553685ebf09f3a9a648c0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800092
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9869cbba70be77f4f04365a46e45ebab6354e6a9f67553685ebf09f3a9a648c0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800092.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第21曲 天使の音楽
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 93.671
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.107
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.91
  additional property: Liveness
    type: PropertyValue
    value: 0.076
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.134
  additional property: Loudness (dB)
    type: PropertyValue
    value: -36.323
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第22曲 舟歌
type: MusicRecording
duration: PT1M51S
duration ms: 111114
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800093
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:03:24+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6b14a97f07a8f3b55ec39a70c168da2da3588bf59ccf1237bbbf20040c74a9cc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800093
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b14a97f07a8f3b55ec39a70c168da2da3588bf59ccf1237bbbf20040c74a9cc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800093.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第22曲 舟歌
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.666
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.459
  additional property: Energy
    type: PropertyValue
    value: 0.011
  additional property: Speechiness
    type: PropertyValue
    value: 0.181
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.873
  additional property: Liveness
    type: PropertyValue
    value: 0.091
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.209
  additional property: Loudness (dB)
    type: PropertyValue
    value: -35.131
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第23曲 再会
type: MusicRecording
duration: PT1M12S
duration ms: 72589
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800094
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T13:25:30+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x748eeb1948899105ba184a72819b2eaa7c729e7e5dd726479d7486230c72f467
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800094
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748eeb1948899105ba184a72819b2eaa7c729e7e5dd726479d7486230c72f467. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800094.
  date published: 2026-07-08T03:20:19Z
audio: 25の練習曲作品100 第23曲 再会
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 171.975
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
    type: PropertyValue
    value: 0.076
  additional property: Speechiness
    type: PropertyValue
    value: 0.109
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.918
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.074
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.587
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

25の練習曲作品100 第25曲 乗馬
type: MusicRecording
duration: PT2M17S
duration ms: 137591
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800096
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T02:00:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4896c9e5a39fd19c842d66588f3a23a40f0ab3d2cae632eeb0b9859a079f5936
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960497
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960497
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800096
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T02:22:04Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4896c9e5a39fd19c842d66588f3a23a40f0ab3d2cae632eeb0b9859a079f5936. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800096.
  date published: 2026-08-01T02:22:04Z
audio: 25の練習曲作品100 第25曲 乗馬
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 133.148
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.609
  additional property: Energy
    type: PropertyValue
    value: 0.031
  additional property: Speechiness
    type: PropertyValue
    value: 0.075
  additional property: Acousticness
    type: PropertyValue
    value: 0.988
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.888
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.552
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.599
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

18の練習曲作品109 第2曲 真珠 (2022 Remaster ver.)
type: MusicRecording
duration: PT1M52S
duration ms: 112920
explicit: false
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
isrc code: JPH492200063
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T19:38:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x856756bf80af104fc56c644859a7f2faa90a6d3553669981d6757241ee271794
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957124
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957124
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492200063
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:53:27Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856756bf80af104fc56c644859a7f2faa90a6d3553669981d6757241ee271794. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492200063.
  date published: 2026-07-08T03:53:27Z
audio: 18の練習曲作品109 第2曲 真珠 (2022 Remaster ver.)
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 134.457
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.376
  additional property: Energy
    type: PropertyValue
    value: 0.148
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.929
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.427
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.89
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

18の練習曲作品109 第3曲 羊飼いの家路
type: MusicRecording
duration: PT1M40S
duration ms: 100625
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800099
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T17:19:26+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0ccd774450d34e5e037748761799af97127de7324a605e47eece1c6954b228ee
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800099
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccd774450d34e5e037748761799af97127de7324a605e47eece1c6954b228ee. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800099.
  date published: 2026-07-31T17:29:52Z
audio: 18の練習曲作品109 第3曲 羊飼いの家路
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.127
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.398
  additional property: Energy
    type: PropertyValue
    value: 0.065
  additional property: Speechiness
    type: PropertyValue
    value: 0.053
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.094
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.622
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.609
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

18の練習曲作品109 第4曲 ボヘミアン
type: MusicRecording
duration: PT1M30S
duration ms: 90005
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800100
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-08-01T00:35:06+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd12d4d4392051ebc1b35dc3c84cd2cb2eb19ac78c719c5a400ca5c2122696112
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960494
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960494
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800100
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T01:44:32Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12d4d4392051ebc1b35dc3c84cd2cb2eb19ac78c719c5a400ca5c2122696112. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800100.
  date published: 2026-08-01T01:44:32Z
audio: 18の練習曲作品109 第4曲 ボヘミアン
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 156.769
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.568
  additional property: Energy
    type: PropertyValue
    value: 0.12
  additional property: Speechiness
    type: PropertyValue
    value: 0.104
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.93
  additional property: Liveness
    type: PropertyValue
    value: 0.11
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.627
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.083
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Minor

18の練習曲作品109 第8曲 アジタート
type: MusicRecording
duration: PT1M33S
duration ms: 93116
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800104
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T08:26:41Z
audio: 18の練習曲作品109 第8曲 アジタート
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18の練習曲作品109 第11曲 セレナーデ
type: MusicRecording
duration: PT1M47S
duration ms: 107600
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
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  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800107
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T00:40:43Z
audio: 18の練習曲作品109 第11曲 セレナーデ
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18の練習曲作品109 第13曲 雷雨
type: MusicRecording
duration: PT1M30S
duration ms: 90734
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800109
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: 18の練習曲作品109 第13曲 雷雨
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18の練習曲作品109 第14曲 ゴンドラ漕ぎの歌 (2022 Remaster ver.)
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duration: PT1M56S
duration ms: 116122
explicit: false
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
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  date published: 2019-01-19
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35822f6ae961b271159bff4861147da1eb38098405efa3f5ff0402e565baba0d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH492200064.
  date published: 2026-07-29T11:30:20Z
audio: 18の練習曲作品109 第14曲 ゴンドラ漕ぎの歌 (2022 Remaster ver.)
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18の練習曲作品109 第15曲 風の精たち
type: MusicRecording
duration: PT1M46S
duration ms: 106760
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
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  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800111
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T00:40:43Z
audio: 18の練習曲作品109 第15曲 風の精たち
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18の練習曲作品109 第18曲 紡ぎ歌
type: MusicRecording
duration: PT1M49S
duration ms: 109353
explicit: false
by artist: Friedrich Burgmüller
by artist: Rintaro Akamatsu
in album: ブルクミュラー : 25の練習曲 & 18の練習曲
  type: MusicAlbum
  date published: 2019-01-19
genre: classical-piano
isrc code: JPU941800114
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33d0082c7a2cafc92341f344178fcd9127a87e6275eba323f66adc4a69cc0f7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPU941800114.
  date published: 2026-07-31T02:19:15Z
audio: 18の練習曲作品109 第18曲 紡ぎ歌
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25 Études Faciles et Progressives, Vol. 2
type: MusicAlbum
date published: 2018-04-07

Friedrich Burgmüller: 25 Leichte Etuden Op. 100
type: MusicAlbum
date published: 2017-02-28
track: 25 Ètudes Faciles Et Progressives, Op. 100: I. La Candeur
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    date published: 2017-02-28
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
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    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    date published: 2026-07-07T16:07:00Z
  audio: 25 Ètudes Faciles Et Progressives, Op. 100: I. La Candeur
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track: 25 Ètudes Faciles Et Progressives, Op. 100: II. Arabesque
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:30:09Z
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track: 25 Ètudes Faciles Et Progressives, Op. 100: III. Pastorale
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  audio: 25 Ètudes Faciles Et Progressives, Op. 100: III. Pastorale
track: 25 Ètudes Faciles Et Progressives, Op. 100: IV. Petite Réunion
track: 25 Ètudes Faciles Et Progressives, Op. 100: V. Innocence
track: 25 Ètudes Faciles Et Progressives, Op. 100: VI. Progrès
track: 25 Ètudes Faciles Et Progressives, Op. 100: VII. Courant Limpide
track: 25 Ètudes Faciles Et Progressives, Op. 100: VIII. La Gracieuse
track: 25 Ètudes Faciles Et Progressives, Op. 100: IX. La Chasse
track: 25 Ètudes Faciles Et Progressives, Op. 100: X. Tendre Fleur
track: 25 Ètudes Faciles Et Progressives, Op. 100: XI. La Bergeronnette
track: 25 Ètudes Faciles Et Progressives, Op. 100: XII. Adieu
track: 25 Ètudes Faciles Et Progressives, Op. 100: XIII. Consolation
track: 25 Ètudes Faciles Et Progressives, Op. 100: XIV. La Styrienne
track: 25 Ètudes Faciles Et Progressives, Op. 100: XV. Ballade
track: 25 Ètudes Faciles Et Progressives, Op. 100: XVI. Douce Plainte
track: 25 Ètudes Faciles Et Progressives, Op. 100: XVII. Babillarde
track: 25 Ètudes Faciles Et Progressives, Op. 100: XVIII. Inquitétude
track: 25 Ètudes Faciles Et Progressives, Op. 100: XIX. Ave Maria
track: 25 Ètudes Faciles Et Progressives, Op. 100: XX. Tarentelle
track: 25 Ètudes Faciles Et Progressives, Op. 100: XXI. Harmonie Des Anges
track: 25 Ètudes Faciles Et Progressives, Op. 100: XXII. Barcarolle
track: 25 Ètudes Faciles Et Progressives, Op. 100: XXIII. Retour
track: 25 Ètudes Faciles Et Progressives, Op. 100: XXIV. L'hirondelle
track: 25 Ètudes Faciles Et Progressives, Op. 100: XXV. La Chevaleresque

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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-30T04:47:22Z

25 Ètudes Faciles Et Progressives, Op. 100: III. Pastorale
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25 Ètudes Faciles Et Progressives, Op. 100: IV. Petite Réunion
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-29T14:28:24Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: IV. Petite Réunion
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25 Ètudes Faciles Et Progressives, Op. 100: V. Innocence
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T05:43:45Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: V. Innocence
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25 Ètudes Faciles Et Progressives, Op. 100: VI. Progrès
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: VI. Progrès
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25 Ètudes Faciles Et Progressives, Op. 100: VII. Courant Limpide
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T12:47:07Z
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25 Ètudes Faciles Et Progressives, Op. 100: VIII. La Gracieuse
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isrc code: USGZ21034766
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T19:10:17+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd48b23cde0c6e05a8f98aa1acbcfffa6901e307eff37a1781086efc8bf507cc5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960298
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960298
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034766
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T19:26:00Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b23cde0c6e05a8f98aa1acbcfffa6901e307eff37a1781086efc8bf507cc5. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034766.
  date published: 2026-07-30T19:26:00Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: VIII. La Gracieuse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.414
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
    type: PropertyValue
    value: 0.177
  additional property: Speechiness
    type: PropertyValue
    value: 0.078
  additional property: Acousticness
    type: PropertyValue
    value: 0.985
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.921
  additional property: Liveness
    type: PropertyValue
    value: 0.158
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.231
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.599
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: IX. La Chasse
type: MusicRecording
duration: PT1M16S
duration ms: 76560
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034767
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T11:54:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb9a39f4dc65dea59dc4f2e282d6b1775e93076077b76b5818db59c4a8d581220
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960254
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960254
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034767
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:06:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a39f4dc65dea59dc4f2e282d6b1775e93076077b76b5818db59c4a8d581220. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034767.
  date published: 2026-07-30T12:06:10Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: IX. La Chasse
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 126.935
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.441
  additional property: Energy
    type: PropertyValue
    value: 0.154
  additional property: Speechiness
    type: PropertyValue
    value: 0.084
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.908
  additional property: Liveness
    type: PropertyValue
    value: 0.099
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.329
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.446
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: X. Tendre Fleur
type: MusicRecording
duration: PT1M16S
duration ms: 76773
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034768
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T22:52:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe67d0f73bf5580e4962de85bdc7e56830073d320ebbe7f0431595a08bef0e482
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034768
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67d0f73bf5580e4962de85bdc7e56830073d320ebbe7f0431595a08bef0e482. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034768.
  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: X. Tendre Fleur
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 163.087
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.213
  additional property: Energy
    type: PropertyValue
    value: 0.199
  additional property: Speechiness
    type: PropertyValue
    value: 0.042
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.855
  additional property: Liveness
    type: PropertyValue
    value: 0.157
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.91
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.615
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XI. La Bergeronnette
type: MusicRecording
duration: PT0M48S
duration ms: 48426
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034769
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T02:08:58+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x06fef9d69461ac8f6c38c429e2c8001aa1c48bd950e7c9c31d05a7970312c773
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034769
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fef9d69461ac8f6c38c429e2c8001aa1c48bd950e7c9c31d05a7970312c773. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034769.
  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XI. La Bergeronnette
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.455
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.672
  additional property: Energy
    type: PropertyValue
    value: 0.22
  additional property: Speechiness
    type: PropertyValue
    value: 0.096
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.935
  additional property: Liveness
    type: PropertyValue
    value: 0.081
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.376
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.765
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XII. Adieu
type: MusicRecording
duration: PT1M15S
duration ms: 75040
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034770
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T05:09:03+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x60e5e239364ecf0d375979b1f2acc6a32c33e5314086fedcdd3f2d915b7c6613
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960209
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960209
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034770
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T05:15:54Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e5e239364ecf0d375979b1f2acc6a32c33e5314086fedcdd3f2d915b7c6613. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034770.
  date published: 2026-07-30T05:15:54Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XII. Adieu
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 108.466
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.336
  additional property: Energy
    type: PropertyValue
    value: 0.144
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.855
  additional property: Liveness
    type: PropertyValue
    value: 0.072
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.515
  additional property: Loudness (dB)
    type: PropertyValue
    value: -21.996
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Ètudes Faciles Et Progressives, Op. 100: XIII. Consolation
type: MusicRecording
duration: PT1M7S
duration ms: 67026
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034771
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T09:47:53+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78dfaf7a3fe9b666165a54348b2e18c7561a0a5d503bc71c14eacd88e27ac1d6
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960384
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960384
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034771
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T09:54:03Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dfaf7a3fe9b666165a54348b2e18c7561a0a5d503bc71c14eacd88e27ac1d6. Chain 2 (Bitcoin): anchored in block 960384 (2026-07-31T09:54:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034771.
  date published: 2026-07-31T09:54:03Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XIII. Consolation
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 106.553
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.306
  additional property: Energy
    type: PropertyValue
    value: 0.198
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.858
  additional property: Liveness
    type: PropertyValue
    value: 0.159
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.629
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.178
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XIV. La Styrienne
type: MusicRecording
duration: PT2M3S
duration ms: 123373
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034772
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T11:46:05+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb22db798eb3e5b9410bae9ed574f43aa988c6057b5f247a21803756dc29941b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960254
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960254
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034772
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T12:06:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb22db798eb3e5b9410bae9ed574f43aa988c6057b5f247a21803756dc29941b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034772.
  date published: 2026-07-30T12:06:10Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XIV. La Styrienne
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.761
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.546
  additional property: Energy
    type: PropertyValue
    value: 0.131
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.994
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.886
  additional property: Liveness
    type: PropertyValue
    value: 0.096
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.762
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.244
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XV. Ballade
type: MusicRecording
duration: PT1M36S
duration ms: 96760
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034773
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-06T22:02:32+00:00
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x39226f66cf83e3061ba589d75891e7cd5c91323bfc9fa5a6b90d7e9973998257
additional property: OTSHash
additional property: OTSBitcoinBlock
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  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034773
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39226f66cf83e3061ba589d75891e7cd5c91323bfc9fa5a6b90d7e9973998257. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034773.
  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XV. Ballade
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Key Name
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  additional property: Mode Name
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25 Ètudes Faciles Et Progressives, Op. 100: XVI. Douce Plainte
type: MusicRecording
duration: PT1M13S
duration ms: 73266
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034774
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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  value: 2026-07-07T03:30:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa43d61acd0b59532fc637ba2d835dff61d5bfa8c2ab0a5a43cd71ae67223384c
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034774
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43d61acd0b59532fc637ba2d835dff61d5bfa8c2ab0a5a43cd71ae67223384c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034774.
  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XVI. Douce Plainte
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
    value: 0.993
  additional property: Instrumentalness
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    value: 0.919
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.227
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.753
  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
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25 Ètudes Faciles Et Progressives, Op. 100: XVII. Babillarde
type: MusicRecording
duration: PT1M8S
duration ms: 68373
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034775
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T08:48:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd74d3ae743e31f91ab8c1e91a2547bd3531ced75fc5ea79b5fed2005e8f84c90
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034775
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74d3ae743e31f91ab8c1e91a2547bd3531ced75fc5ea79b5fed2005e8f84c90. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034775.
  date published: 2026-07-08T03:22:41Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XVII. Babillarde
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 173.136
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.344
  additional property: Energy
    type: PropertyValue
    value: 0.233
  additional property: Speechiness
    type: PropertyValue
    value: 0.08
  additional property: Acousticness
    type: PropertyValue
    value: 0.995
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.102
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.396
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.291
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XVIII. Inquitétude
type: MusicRecording
duration: PT0M44S
duration ms: 44693
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034776
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T00:07:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x968ad1294422295d4fdfbf6bf68099006907e1ae992f9fd6e3b9508b8da076d8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034776
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968ad1294422295d4fdfbf6bf68099006907e1ae992f9fd6e3b9508b8da076d8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034776.
  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XVIII. Inquitétude
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 144.275
  additional property: Musical Key
    type: PropertyValue
    value: 4
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.291
  additional property: Energy
    type: PropertyValue
    value: 0.323
  additional property: Speechiness
    type: PropertyValue
    value: 0.033
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.891
  additional property: Liveness
    type: PropertyValue
    value: 0.166
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.951
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.566
  additional property: Key Name
    type: PropertyValue
    value: E
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Ètudes Faciles Et Progressives, Op. 100: XIX. Ave Maria
type: MusicRecording
duration: PT1M20S
duration ms: 80173
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034777
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T19:00:27+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5ff7b4bc81c408d7a0c66fb0344018c3a798ff0dbeeaf799237764b72981a743
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960296
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960296
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034777
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T19:11:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff7b4bc81c408d7a0c66fb0344018c3a798ff0dbeeaf799237764b72981a743. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034777.
  date published: 2026-07-30T19:11:09Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XIX. Ave Maria
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 122.68
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.625
  additional property: Energy
    type: PropertyValue
    value: 0.035
  additional property: Speechiness
    type: PropertyValue
    value: 0.17
  additional property: Acousticness
    type: PropertyValue
    value: 0.996
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.957
  additional property: Liveness
    type: PropertyValue
    value: 0.082
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.176
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.279
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Ètudes Faciles Et Progressives, Op. 100: XX. Tarentelle
type: MusicRecording
duration: PT1M38S
duration ms: 98693
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034778
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T02:13:54+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f79aa2a5c6176e7d06094272d03104962bcec29600d2b1b21efb1790a79b920
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034778
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f79aa2a5c6176e7d06094272d03104962bcec29600d2b1b21efb1790a79b920. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034778.
  date published: 2026-07-06T06:56:49Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XX. Tarentelle
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 157.65
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.356
  additional property: Energy
    type: PropertyValue
    value: 0.221
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.983
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.914
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.834
  additional property: Loudness (dB)
    type: PropertyValue
    value: -18.807
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Ètudes Faciles Et Progressives, Op. 100: XXI. Harmonie Des Anges
type: MusicRecording
duration: PT1M49S
duration ms: 109600
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034779
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T15:05:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b01efb62b105bcfbe934c585a3e0a06ea6a62b0a997a98ba09428f587b20d47
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960121
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960121
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034779
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T15:22:21Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b01efb62b105bcfbe934c585a3e0a06ea6a62b0a997a98ba09428f587b20d47. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034779.
  date published: 2026-07-29T15:22:21Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XXI. Harmonie Des Anges
  type: AudioObject
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  additional property: Valence (Positivity)
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25 Ètudes Faciles Et Progressives, Op. 100: XXII. Barcarolle
type: MusicRecording
duration: PT1M14S
duration ms: 74200
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
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  date published: 2017-02-28
genre: classical-piano
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f196211383f092230ae3546ad4c62a12941f6e093e35b09604c4080fdb7b00. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034780.
  date published: 2026-07-31T08:26:41Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XXII. Barcarolle
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25 Ètudes Faciles Et Progressives, Op. 100: XXIII. Retour
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duration: PT1M19S
duration ms: 79706
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
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genre: classical-piano
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace95661a18f782a988c111a02eb90b94bca233b6d33be657d9b148d24a04cec. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034781.
  date published: 2026-07-30T21:35:24Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XXIII. Retour
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25 Ètudes Faciles Et Progressives, Op. 100: XXIV. L'hirondelle
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duration: PT1M11S
duration ms: 71933
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034782
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  date published: 2026-07-08T03:20:19Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XXIV. L'hirondelle
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25 Ètudes Faciles Et Progressives, Op. 100: XXV. La Chevaleresque
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duration: PT1M53S
duration ms: 113933
explicit: false
by artist: Friedrich Burgmüller
by artist: Benedikt David
in album: Friedrich Burgmüller: 25 Leichte Etuden Op. 100
  type: MusicAlbum
  date published: 2017-02-28
genre: classical-piano
isrc code: USGZ21034783
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d79937f129c9ecd4d76969a3ff4b763a9c1b0b5554d0b19a34ee8df3776fe2. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USGZ21034783.
  date published: 2026-07-30T18:46:00Z
audio: 25 Ètudes Faciles Et Progressives, Op. 100: XXV. La Chevaleresque
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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Burgmüller, 7 Little Studies for The Piano
type: MusicAlbum
date published: 2015-04-08
track: L'Hirondelle, Op. 100, No. 24
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  duration: PT1M9S
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  explicit: false
  by artist: Friedrich Burgmüller
  in album: Burgmüller, 7 Little Studies for The Piano
    type: MusicAlbum
    date published: 2015-04-08
  genre: classical-piano
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820bd2a436f1663a37fc82999e1cc02d109445a18b71d0d0c919154db59188df. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991401.
    date published: 2026-07-02T03:55:08Z
  audio: L'Hirondelle, Op. 100, No. 24
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Time Signature
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Valence (Positivity)
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track: La Styrienne, Op. 100, No. 14
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  additional property: OTSVerificationAPI
    type: PropertyValue
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-02T03:55:08Z
  audio: La Styrienne, Op. 100, No. 14
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    additional property: Valence (Positivity)
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track: La Bergeronnette, Op. 100, No. 11
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  subject of: OpenTimestamps Proof of Existence
  audio: La Bergeronnette, Op. 100, No. 11
track: Le Courant Limpide, Op. 100, No. 7
track: Inquietude, Op. 100, No. 18
track: L'Harmonie des Anges, Op. 100, No. 21
track: La Gracieuse, Op. 100, No. 8

OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
type: PropertyValue
value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch

OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31a7933f314343d91874fe2c909f5aa74af2326ad9b6dd9b938df469ee3b144. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991410.
date published: 2026-07-13T07:53:33Z

La Bergeronnette, Op. 100, No. 11
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 132.587
additional property: Musical Key
  type: PropertyValue
  value: 0
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.443
additional property: Energy
  type: PropertyValue
  value: 0.157
additional property: Speechiness
  type: PropertyValue
  value: 0.077
additional property: Acousticness
  type: PropertyValue
  value: 0.988
additional property: Instrumentalness
  type: PropertyValue
  value: 0.914
additional property: Liveness
  type: PropertyValue
  value: 0.125
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.451
additional property: Loudness (dB)
  type: PropertyValue
  value: -22.846
additional property: Key Name
  type: PropertyValue
  value: C
additional property: Mode Name
  type: PropertyValue
  value: Major

Le Courant Limpide, Op. 100, No. 7
type: MusicRecording
duration: PT0M56S
duration ms: 56042
explicit: false
by artist: Friedrich Burgmüller
in album: Burgmüller, 7 Little Studies for The Piano
  type: MusicAlbum
  date published: 2015-04-08
genre: classical-piano
isrc code: USE830991419
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-19T17:47:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x38053306ff69891464de2fff977b4355bb986ca3cfc62a1aab15e6b74e9df7f0
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991419
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38053306ff69891464de2fff977b4355bb986ca3cfc62a1aab15e6b74e9df7f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991419.
  date published: 2026-07-02T03:30:09Z
audio: Le Courant Limpide, Op. 100, No. 7
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 102.637
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.277
  additional property: Energy
    type: PropertyValue
    value: 0.22
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.931
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.932
  additional property: Liveness
    type: PropertyValue
    value: 0.134
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.26
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.206
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Inquietude, Op. 100, No. 18
type: MusicRecording
duration: PT1M0S
duration ms: 60984
explicit: false
by artist: Friedrich Burgmüller
in album: Burgmüller, 7 Little Studies for The Piano
  type: MusicAlbum
  date published: 2015-04-08
genre: classical-piano
isrc code: USE830991415
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-21T10:48:01+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7d065f6668263b4f55caa35cde653f2a97571320d038821eb08d243a3c28bbab
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956302
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956302
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991415
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:30:09Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d065f6668263b4f55caa35cde653f2a97571320d038821eb08d243a3c28bbab. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991415.
  date published: 2026-07-02T03:30:09Z
audio: Inquietude, Op. 100, No. 18
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 128.183
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.358
  additional property: Energy
    type: PropertyValue
    value: 0.314
  additional property: Speechiness
    type: PropertyValue
    value: 0.041
  additional property: Acousticness
    type: PropertyValue
    value: 0.953
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.131
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.315
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.865
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

L'Harmonie des Anges, Op. 100, No. 21
type: MusicRecording
duration: PT2M0S
duration ms: 120013
explicit: false
by artist: Friedrich Burgmüller
in album: Burgmüller, 7 Little Studies for The Piano
  type: MusicAlbum
  date published: 2015-04-08
genre: classical-piano
isrc code: USE830991400
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T03:51:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7774077b07c66f6bc03277f3109fa6cfb39ef54f96110173150ccaae8bc0764e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991400
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7774077b07c66f6bc03277f3109fa6cfb39ef54f96110173150ccaae8bc0764e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991400.
  date published: 2026-07-06T06:56:49Z
audio: L'Harmonie des Anges, Op. 100, No. 21
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 123.384
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.337
  additional property: Energy
    type: PropertyValue
    value: 0.249
  additional property: Speechiness
    type: PropertyValue
    value: 0.043
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.904
  additional property: Liveness
    type: PropertyValue
    value: 0.149
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.345
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.065
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

La Gracieuse, Op. 100, No. 8
type: MusicRecording
duration: PT1M3S
duration ms: 63611
explicit: false
by artist: Friedrich Burgmüller
in album: Burgmüller, 7 Little Studies for The Piano
  type: MusicAlbum
  date published: 2015-04-08
genre: classical-piano
isrc code: USE830991403
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T21:51:13+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8969497946bc842e1fbabc68ed24e3325603081569a9be1046a0b985a2d25ece
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957120
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957120
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:22:41Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8969497946bc842e1fbabc68ed24e3325603081569a9be1046a0b985a2d25ece. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE830991403.
  date published: 2026-07-08T03:22:41Z
audio: La Gracieuse, Op. 100, No. 8
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 146.094
  additional property: Musical Key
    type: PropertyValue
    value: 0
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.539
  additional property: Energy
    type: PropertyValue
    value: 0.069
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.987
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.868
  additional property: Liveness
    type: PropertyValue
    value: 0.156
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.613
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.882
  additional property: Key Name
    type: PropertyValue
    value: C
  additional property: Mode Name
    type: PropertyValue
    value: Major

Friedrich Burgmüller: 18 Characteristic Studies, Op. 109
type: MusicAlbum
date published: 2014
track: 18 Études de genre, Op. 109: No. 1 in C Major, Confidence
  type: MusicRecording
  duration: PT1M42S
  duration ms: 102653
  explicit: false
  by artist: Friedrich Burgmüller
  by artist: William Westney
  in album: Friedrich Burgmüller: 18 Characteristic Studies, Op. 109
    type: MusicAlbum
    date published: 2014
  genre: classical-piano
  isrc code: QMBZ91426687
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T04:23:18+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x5ef56eb54f84522a9fd76718e1758973064842488970fc50aa82f4a88fa8564c
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 957118
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/957118
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91426687
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-08T03:20:19Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef56eb54f84522a9fd76718e1758973064842488970fc50aa82f4a88fa8564c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91426687.
    date published: 2026-07-08T03:20:19Z
  audio: 18 Études de genre, Op. 109: No. 1 in C Major, Confidence
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 148.124
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.352
    additional property: Energy
      type: PropertyValue
      value: 0.133
    additional property: Speechiness
      type: PropertyValue
      value: 0.038
    additional property: Acousticness
      type: PropertyValue
      value: 0.993
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.871
    additional property: Liveness
      type: PropertyValue
      value: 0.136
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.502
    additional property: Loudness (dB)
      type: PropertyValue
      value: -22.391
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: 18 Études de genre, Op. 109: No. 2 in C Major, Les perles
  type: MusicRecording
  duration: PT1M34S
  duration ms: 94413
  explicit: false
  by artist: Friedrich Burgmüller
  by artist: William Westney
  in album: Friedrich Burgmüller: 18 Characteristic Studies, Op. 109
    type: MusicAlbum
    date published: 2014
  genre: classical-piano
  isrc code: QMBZ91426688
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T10:01:51+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x996c2652e20ba7026d9b4f80782b205a0b3b2beb4d1cb45452c1659334a51289
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960389
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960389
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91426688
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T10:20:10Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996c2652e20ba7026d9b4f80782b205a0b3b2beb4d1cb45452c1659334a51289. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMBZ91426688.
    date published: 2026-07-31T10:20:10Z
  audio: 18 Études de genre, Op. 109: No. 2 in C Major, Les perles
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 126.427
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.407
    additional property: Energy
      type: PropertyValue
      value: 0.153
    additional property: Speechiness
      type: PropertyValue
      value: 0.042
    additional property: Acousticness
      type: PropertyValue
      value: 0.975
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.932
    additional property: Liveness
      type: PropertyValue
      value: 0.061
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.263
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.179
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 18 Études de genre, Op. 109: No. 3 in G Major, Le retour du pâtre
  type: MusicRecording
  duration: PT1M59S
  duration ms: 119800
  explicit: false
  by artist: Friedrich Burgmüller
  by artist: William Westney
  in album: Friedrich Burgmüller: 18 Characteristic Studies, Op. 109
    type: MusicAlbum
    date published: 2014
  genre: classical-piano
  isrc code: QMBZ91426689
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T14:39:16+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x1e5ea0d9f018e06da5b14b8ed383c0a5e54648b78b1316f09c282468554e824e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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  additional property: OTSBitcoinBlockVerifyURL
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track: 18 Études de genre, Op. 109: No. 4 in C Minor, Les bohémiens
track: 18 Études de genre, Op. 109: No. 5 in G Major, La source
track: 18 Études de genre, Op. 109: No. 6 in C Major, L'enjouée
track: 18 Études de genre, Op. 109: No. 7 in F Major, Berceuse
track: 18 Études de genre, Op. 109: No. 8 in E Minor, Agitato
track: 18 Études de genre, Op. 109: No. 9 in A-Flat Major, La cloche des matines
track: 18 Études de genre, Op. 109: No. 10 in C Major, La vélocité
track: 18 Études de genre, Op. 109: No. 11 in A Minor, La sérénade
track: 18 Études de genre, Op. 109: No. 12 in F Major, Le réveil dans les bois
track: 18 Études de genre, Op. 109: No. 13 in D Minor, L'orage
track: 18 Études de genre, Op. 109: No. 14 in A Major, Refrain du gondolier
track: 18 Études de genre, Op. 109: No. 15 in G Minor, Les sylphes
track: 18 Études de genre, Op. 109: No. 16 in E-Flat Major, La séparation
track: 18 Études de genre, Op. 109: No. 17 in F Major, La marche
track: 18 Études de genre, Op. 109: No. 18 in D Major, La fileuse

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OTSVerifyInstructions
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date published: 2026-07-31T15:20:15Z

18 Études de genre, Op. 109: No. 3 in G Major, Le retour du pâtre
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18 Études de genre, Op. 109: No. 4 in C Minor, Les bohémiens
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T23:51:35Z
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18 Études de genre, Op. 109: No. 5 in G Major, La source
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T20:09:33Z
audio: 18 Études de genre, Op. 109: No. 5 in G Major, La source
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18 Études de genre, Op. 109: No. 6 in C Major, L'enjouée
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T17:29:52Z
audio: 18 Études de genre, Op. 109: No. 6 in C Major, L'enjouée
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18 Études de genre, Op. 109: No. 7 in F Major, Berceuse
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genre: classical-piano
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T21:00:46Z
audio: 18 Études de genre, Op. 109: No. 7 in F Major, Berceuse
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18 Études de genre, Op. 109: No. 8 in E Minor, Agitato
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: 18 Études de genre, Op. 109: No. 8 in E Minor, Agitato
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18 Études de genre, Op. 109: No. 9 in A-Flat Major, La cloche des matines
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T00:26:26Z
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18 Études de genre, Op. 109: No. 10 in C Major, La vélocité
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  date published: 2026-07-30T18:23:33Z
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18 Études de genre, Op. 109: No. 11 in A Minor, La sérénade
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
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18 Études de genre, Op. 109: No. 12 in F Major, Le réveil dans les bois
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T20:22:46Z
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18 Études de genre, Op. 109: No. 13 in D Minor, L'orage
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:30:09Z
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18 Études de genre, Op. 109: No. 14 in A Major, Refrain du gondolier
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T05:17:02Z
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18 Études de genre, Op. 109: No. 15 in G Minor, Les sylphes
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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18 Études de genre, Op. 109: No. 16 in E-Flat Major, La séparation
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T13:50:38Z
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18 Études de genre, Op. 109: No. 17 in F Major, La marche
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by artist: William Westney
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: 18 Études de genre, Op. 109: No. 17 in F Major, La marche
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18 Études de genre, Op. 109: No. 18 in D Major, La fileuse
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T04:14:58Z
audio: 18 Études de genre, Op. 109: No. 18 in D Major, La fileuse
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Burgmüller: 25 études, Op. 100
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Burgmüller: 25 Progressive Studies, Op. 100
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date published: 2014
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T04:47:22Z
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Burgmüller: 18 Études, Op. 109
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-08T03:22:41Z
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Burgmuller 25 Etuden Op.100
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-02T03:55:08Z
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    date published: 2026-07-02T03:30:09Z
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track: 25 Études faciles et progressives, Op. 100: 5. Innocence. Moderato
track: 25 Études faciles et progressives, Op. 100: 6. Progrès. Allegro
track: 25 Études faciles et progressives, Op. 100: 7. Le courant limpide. Allegro vivace
track: 25 Études faciles et progressives, Op. 100: 8. La gracieuse. Moderato
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track: 25 Études faciles et progressives, Op. 100: 10. Tendre fleur. Moderato
track: 25 Études faciles et progressives, Op. 100: 11. La bergeronnette. Allegretto
track: 25 Études faciles et progressives, Op. 100: 12. L'adieu. Allegro molto agitato
track: 25 Études faciles et progressives, Op. 100: 13. Consolation. Allegro moderato
track: 25 Études faciles et progressives, Op. 100: 14. La styrienne. Mouvement de valse
track: 25 Études faciles et progressives, Op. 100: 15. Ballade. Allegro con brio
track: 25 Études faciles et progressives, Op. 100: 16. Douce plainte. Allegro moderato
track: 25 Études faciles et progressives, Op. 100: 17. La babillarde. Allegretto
track: 25 Études faciles et progressives, Op. 100: 18. Inquiétude. Allegro agitato
track: 25 Études faciles et progressives, Op. 100: 19. Ave Maria. Andantino
track: 25 Études faciles et progressives, Op. 100: 20. La tarentelle. Allegro vivo
track: 25 Études faciles et progressives, Op. 100: 21. L'harmonie des anges. Allegro moderato
track: 25 Études faciles et progressives, Op. 100: 22. Barcarolle. Andantino quasi Allegretto
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track: 25 Études faciles et progressives, Op. 100: 24. L'hirondelle. Allegro non troppo

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25 Études faciles et progressives, Op. 100: 3. La pastorale. Andantino
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25 Études faciles et progressives, Op. 100: 4. La petite reunion. Allegro non troppo
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25 Études faciles et progressives, Op. 100: 5. Innocence. Moderato
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25 Études faciles et progressives, Op. 100: 6. Progrès. Allegro
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25 Études faciles et progressives, Op. 100: 7. Le courant limpide. Allegro vivace
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25 Études faciles et progressives, Op. 100: 8. La gracieuse. Moderato
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25 Études faciles et progressives, Op. 100: 9. La chasse. Allegro vivace
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  value: 2026-07-29T14:28:24Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e957de782572ab09d7ad5e60939ca57569ee8a1bcb52092ded87699ea15d306. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989627.
  date published: 2026-07-29T14:28:24Z
audio: 25 Études faciles et progressives, Op. 100: 9. La chasse. Allegro vivace
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25 Études faciles et progressives, Op. 100: 10. Tendre fleur. Moderato
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duration: PT1M31S
duration ms: 91168
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989628
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989628
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T21:09:47Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9170811a84ad9df178287a511a17da94a6ffd9d1ff49c1a4f9dea21279fdb84. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989628.
  date published: 2026-07-29T21:09:47Z
audio: 25 Études faciles et progressives, Op. 100: 10. Tendre fleur. Moderato
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25 Études faciles et progressives, Op. 100: 11. La bergeronnette. Allegretto
type: MusicRecording
duration: PT0M51S
duration ms: 51018
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989629
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989629
additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030c1052c8ec80e7de6cd766f4ea28b107abda1d928c73eeea803ccfdeca5076. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989629.
  date published: 2026-07-29T14:28:24Z
audio: 25 Études faciles et progressives, Op. 100: 11. La bergeronnette. Allegretto
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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25 Études faciles et progressives, Op. 100: 12. L'adieu. Allegro molto agitato
type: MusicRecording
duration: PT1M14S
duration ms: 74371
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989630
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6fa4c8d8ebcc71f3db9f3b0fa1c739a6d70a0fa85504a2df6ac76aa34b033f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989630.
  date published: 2026-07-02T03:55:08Z
audio: 25 Études faciles et progressives, Op. 100: 12. L'adieu. Allegro molto agitato
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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25 Études faciles et progressives, Op. 100: 13. Consolation. Allegro moderato
type: MusicRecording
duration: PT1M9S
duration ms: 69147
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989631
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc99c55a3b280d40a859c97de5ba991d5354d9fba3deb1b8c22293a0e4027151. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989631.
  date published: 2026-07-29T21:09:47Z
audio: 25 Études faciles et progressives, Op. 100: 13. Consolation. Allegro moderato
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25 Études faciles et progressives, Op. 100: 14. La styrienne. Mouvement de valse
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duration: PT2M16S
duration ms: 136438
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989632
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3af846f9b825269334cf32af6498f967bc689498bdc84b1e76b56f96675e37. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989632.
  date published: 2026-07-07T18:39:05Z
audio: 25 Études faciles et progressives, Op. 100: 14. La styrienne. Mouvement de valse
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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25 Études faciles et progressives, Op. 100: 15. Ballade. Allegro con brio
type: MusicRecording
duration: PT1M38S
duration ms: 98116
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989633
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3271d99b75fee4932906ed981ce68fbac1663b0d0ce5bf777307c60263fcab90. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989633.
  date published: 2026-07-02T03:55:08Z
audio: 25 Études faciles et progressives, Op. 100: 15. Ballade. Allegro con brio
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  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
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  additional property: Key Name
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  additional property: Mode Name
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25 Études faciles et progressives, Op. 100: 16. Douce plainte. Allegro moderato
type: MusicRecording
duration: PT1M24S
duration ms: 84298
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989634
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T05:54:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x633eb51c56333fa414de150328d53e6cc7b6d5cb46c372c917ccf77686209a54
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956889
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989634
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633eb51c56333fa414de150328d53e6cc7b6d5cb46c372c917ccf77686209a54. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989634.
  date published: 2026-07-06T06:56:49Z
audio: 25 Études faciles et progressives, Op. 100: 16. Douce plainte. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 120.767
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.391
  additional property: Energy
    type: PropertyValue
    value: 0.252
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.973
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.822
  additional property: Liveness
    type: PropertyValue
    value: 0.232
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.963
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.992
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Études faciles et progressives, Op. 100: 17. La babillarde. Allegretto
type: MusicRecording
duration: PT0M58S
duration ms: 58489
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989635
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T00:57:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x615367fa92e98dd2f6781a3adac0e728a7d868c67c031e0fe91f884b82f7671e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960183
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960183
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989635
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T01:10:20Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615367fa92e98dd2f6781a3adac0e728a7d868c67c031e0fe91f884b82f7671e. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989635.
  date published: 2026-07-30T01:10:20Z
audio: 25 Études faciles et progressives, Op. 100: 17. La babillarde. Allegretto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.433
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.613
  additional property: Energy
    type: PropertyValue
    value: 0.345
  additional property: Speechiness
    type: PropertyValue
    value: 0.052
  additional property: Acousticness
    type: PropertyValue
    value: 0.978
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.813
  additional property: Liveness
    type: PropertyValue
    value: 0.128
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.918
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.921
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Études faciles et progressives, Op. 100: 18. Inquiétude. Allegro agitato
type: MusicRecording
duration: PT0M54S
duration ms: 54518
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989636
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T18:35:52+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x65bb8b4a9e5e5778de851682a5d4e937538165aed6ff3a5961011e5b9a0b1b72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957118
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957118
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989636
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bb8b4a9e5e5778de851682a5d4e937538165aed6ff3a5961011e5b9a0b1b72. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989636.
  date published: 2026-07-08T03:20:19Z
audio: 25 Études faciles et progressives, Op. 100: 18. Inquiétude. Allegro agitato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 129.287
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.451
  additional property: Energy
    type: PropertyValue
    value: 0.48
  additional property: Speechiness
    type: PropertyValue
    value: 0.046
  additional property: Acousticness
    type: PropertyValue
    value: 0.871
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.969
  additional property: Liveness
    type: PropertyValue
    value: 0.256
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.975
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.046
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Études faciles et progressives, Op. 100: 19. Ave Maria. Andantino
type: MusicRecording
duration: PT1M33S
duration ms: 93937
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989637
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-06T09:22:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x69a7fc49e81f7ad759a15b12fd0931c9044b9d361400deb30c9cf38de4c22f1e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 957048
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957048
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989637
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T14:18:56Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a7fc49e81f7ad759a15b12fd0931c9044b9d361400deb30c9cf38de4c22f1e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989637.
  date published: 2026-07-07T14:18:56Z
audio: 25 Études faciles et progressives, Op. 100: 19. Ave Maria. Andantino
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 103.626
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.611
  additional property: Energy
    type: PropertyValue
    value: 0.19
  additional property: Speechiness
    type: PropertyValue
    value: 0.405
  additional property: Acousticness
    type: PropertyValue
    value: 0.961
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.889
  additional property: Liveness
    type: PropertyValue
    value: 0.107
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.633
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.438
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Études faciles et progressives, Op. 100: 20. La tarentelle. Allegro vivo
type: MusicRecording
duration: PT2M7S
duration ms: 127530
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989638
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T10:10:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x343584c33ce5a57c908d6682396441a1cd546a91eba6e97fee09482d481cd28a
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960095
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960095
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989638
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T11:07:37Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343584c33ce5a57c908d6682396441a1cd546a91eba6e97fee09482d481cd28a. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989638.
  date published: 2026-07-29T11:07:37Z
audio: 25 Études faciles et progressives, Op. 100: 20. La tarentelle. Allegro vivo
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.469
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 4
  additional property: Danceability
    type: PropertyValue
    value: 0.56
  additional property: Energy
    type: PropertyValue
    value: 0.185
  additional property: Speechiness
    type: PropertyValue
    value: 0.099
  additional property: Acousticness
    type: PropertyValue
    value: 0.969
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.863
  additional property: Liveness
    type: PropertyValue
    value: 0.22
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.89
  additional property: Loudness (dB)
    type: PropertyValue
    value: -22.734
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor

25 Études faciles et progressives, Op. 100: 21. L'harmonie des anges. Allegro moderato
type: MusicRecording
duration: PT1M53S
duration ms: 113085
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989639
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-27T09:44:44+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x78636b6ce97fbc3b067f9eece60abb5c3690963d7832d06beacb8221282e93e8
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 956304
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/956304
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989639
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T03:55:08Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78636b6ce97fbc3b067f9eece60abb5c3690963d7832d06beacb8221282e93e8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989639.
  date published: 2026-07-02T03:55:08Z
audio: 25 Études faciles et progressives, Op. 100: 21. L'harmonie des anges. Allegro moderato
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 119.157
  additional property: Musical Key
    type: PropertyValue
    value: 7
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.367
  additional property: Energy
    type: PropertyValue
    value: 0.204
  additional property: Speechiness
    type: PropertyValue
    value: 0.04
  additional property: Acousticness
    type: PropertyValue
    value: 0.958
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.937
  additional property: Liveness
    type: PropertyValue
    value: 0.189
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.325
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.305
  additional property: Key Name
    type: PropertyValue
    value: G
  additional property: Mode Name
    type: PropertyValue
    value: Major

25 Études faciles et progressives, Op. 100: 22. Barcarolle. Andantino quasi Allegretto
type: MusicRecording
duration: PT1M49S
duration ms: 109088
explicit: false
by artist: Friedrich Burgmüller
by artist: SoonHwon Kwon
in album: Burgmuller 25 Etuden Op.100
  type: MusicAlbum
  date published: 2008-01-04
genre: classical-piano
isrc code: USA370989640
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T08:30:16+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7100d567e57af3b157f50935be57fa1ae3790045d164ca963cdce2ea53c0393e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960236
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960236
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989640
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:37:10Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7100d567e57af3b157f50935be57fa1ae3790045d164ca963cdce2ea53c0393e. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA370989640.
  date published: 2026-07-30T09:37:10Z
audio: 25 Études faciles et progressives, Op. 100: 22. Barcarolle. Andantino quasi Allegretto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 169.594
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.349
  additional property: Energy
    type: PropertyValue
    value: 0.253
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.925
  additional property: Liveness
    type: PropertyValue
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