Lars Vogt
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genre: chamber music
genre: classical
genre: classical piano
description: Lars Vogt (8 September 1970 – 5 September 2022) was a German classical pianist, conductor and academic teacher. Noted by The New York Times for his interpretations of Brahms, Vogt performed as a soloi
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    by artist: Lars Vogt
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    genre: classical
    genre: classical-piano
    genre: chamber-music
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album: Mussorgsky: Bilder einer Ausstellung (Live)
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album: Janáček: Piano Works
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  date published: 2021-02-05
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    genre: classical
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  track: Piano Sonata 1.X.1905, JW VIII/19: II. Death
  track: In the Mists, JW VIII/22: I. Andante
  track: In the Mists, JW VIII/22: II. Molto adagio
  track: In the Mists, JW VIII/22: III. Andantino
  track: In the Mists, JW VIII/22: IV. Presto
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 1, Our Evenings
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 2, A Blown-Away Leaf
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 3, Come with Us!
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  track: On an Overgrown Path, JW VIII/17, Book 1: No. 5, They Chattered Like Swallows
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 6, Words Fail!
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 8, Unutterable Anguish
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 9, In Tears
  track: On an Overgrown Path, JW VIII/17, Book 1: No. 10, The Barn Owl Has Not Flown Away!
  track: On an Overgrown Path, JW VIII/17, Book 2: No. 11, Andante
  track: On an Overgrown Path, JW VIII/17, Book 2: No. 12, Allegretto - Presto
  track: On an Overgrown Path, JW VIII/17, Book 2: No. 13, Più mosso
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album: Dvořák: Dumky & Zypressen: Shostakovich: Piano Trio No. 1 (Live)
album: Smetana, Ravel & Watkins: Piano Trios (Live)
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album: Beethoven: Triple Concerto & Piano Concerto No. 3
album: Brahms: The Piano Trios
album: Boulanger & Debussy & Hindemith (Live)
album: Schubert: Schwanengesang
album: Beethoven: Piano Concerto No. 2 & Triple Concerto (Bonus Track Version)
album: W.A. Mozart: Piano Concertos No. 21 in C Major, K. 467; Piano Concerto No. 27 in B-Flat Major, K. 595
album: Mozart: Piano Concerto No. 9 in E-Flat Major, K. 271 "Jeunehomme" & Piano Concerto No. 24 in C Minor, K. 491
album: Mozart: Piano Sonatas & Fantasias
album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
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album: Brahms: Viola Sonatas, Op. 120 Nos. 1 & 2: Schumann: Maerchenbilder. Op. 113
track: On the Overgrown Path, Book 1, No. 7: Dobrou noc!
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track: Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: IV. Vivace (Live, 2002)

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Piano Sonata 1.X.1905, JW VIII/19: II. Death
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In the Mists, JW VIII/22: I. Andante
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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 0x41f98caad5a337356201e2fa2e5c4dea77ec49810a8b213896e0193724123c45. 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/FINDE2000210.
  date published: 2026-07-08T03:20:19Z
audio: In the Mists, JW VIII/22: II. Molto adagio
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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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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.452
  additional property: Energy
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    value: 0.019
  additional property: Speechiness
    type: PropertyValue
    value: 0.064
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.882
  additional property: Liveness
    type: PropertyValue
    value: 0.075
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.123
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.266
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Major

In the Mists, JW VIII/22: III. Andantino
type: MusicRecording
duration: PT2M21S
duration ms: 141962
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 11
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000211
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T02:57:19+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1e86a7a4816e9977582efa77876b18c9147f5ede65d4f52b3112b6172b11e9d4
additional property: OTSHash
additional property: OTSBitcoinBlock
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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/FINDE2000211
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 0x1e86a7a4816e9977582efa77876b18c9147f5ede65d4f52b3112b6172b11e9d4. 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/FINDE2000211.
  date published: 2026-07-02T03:30:09Z
audio: In the Mists, JW VIII/22: III. Andantino
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 104.421
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
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    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.272
  additional property: Energy
    type: PropertyValue
    value: 0.02
  additional property: Speechiness
    type: PropertyValue
    value: 0.055
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.81
  additional property: Liveness
    type: PropertyValue
    value: 0.084
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.048
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.23
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
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In the Mists, JW VIII/22: IV. Presto
type: MusicRecording
duration: PT5M1S
duration ms: 301624
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 5
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000212
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:00:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3eae3e0966f8962e26da22ac343a1edac691dc769d8b98c9bcba9e846e852b56
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/FINDE2000212
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 0x3eae3e0966f8962e26da22ac343a1edac691dc769d8b98c9bcba9e846e852b56. 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/FINDE2000212.
  date published: 2026-07-08T03:20:19Z
audio: In the Mists, JW VIII/22: IV. Presto
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 139.466
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.396
  additional property: Energy
    type: PropertyValue
    value: 0.031
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.858
  additional property: Liveness
    type: PropertyValue
    value: 0.133
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.055
  additional property: Loudness (dB)
    type: PropertyValue
    value: -26.287
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

On an Overgrown Path, JW VIII/17, Book 1: No. 1, Our Evenings
type: MusicRecording
duration: PT2M56S
duration ms: 176435
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 13
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000213
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-23T17:21:49+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4757a398559373c93ac137ebce2ae84934e652b246fab7a03fecd05750c0f3b9
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/FINDE2000213
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 0x4757a398559373c93ac137ebce2ae84934e652b246fab7a03fecd05750c0f3b9. 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/FINDE2000213.
  date published: 2026-07-02T03:55:08Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 1, Our Evenings
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 110.502
  additional property: Musical Key
    type: PropertyValue
    value: 8
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.207
  additional property: Energy
    type: PropertyValue
    value: 0.019
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.118
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.107
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.828
  additional property: Key Name
    type: PropertyValue
    value: Ab
  additional property: Mode Name
    type: PropertyValue
    value: Minor

On an Overgrown Path, JW VIII/17, Book 1: No. 2, A Blown-Away Leaf
type: MusicRecording
duration: PT2M38S
duration ms: 158612
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 23
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000214
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-18T02:58:32+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa61d95ef7b4e7b863571246b4152d71c7cb5c94b7a594475e9cea8a6c1544628
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/FINDE2000214
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 0xa61d95ef7b4e7b863571246b4152d71c7cb5c94b7a594475e9cea8a6c1544628. 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/FINDE2000214.
  date published: 2026-07-02T03:30:09Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 2, A Blown-Away Leaf
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 101.12
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.243
  additional property: Energy
    type: PropertyValue
    value: 0.039
  additional property: Speechiness
    type: PropertyValue
    value: 0.056
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.879
  additional property: Liveness
    type: PropertyValue
    value: 0.127
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.07
  additional property: Loudness (dB)
    type: PropertyValue
    value: -28.099
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

On an Overgrown Path, JW VIII/17, Book 1: No. 3, Come with Us!
type: MusicRecording
duration: PT1M30S
duration ms: 90570
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 29
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000215
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T04:08:45+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x59fc1687b850056945c60fe6b75e7b2361bd7521e3ef4298f50bd4755fe0c490
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/FINDE2000215
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 0x59fc1687b850056945c60fe6b75e7b2361bd7521e3ef4298f50bd4755fe0c490. 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/FINDE2000215.
  date published: 2026-07-02T03:55:08Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 3, Come with Us!
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.966
  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: 0.375
  additional property: Energy
    type: PropertyValue
    value: 0.007
  additional property: Speechiness
    type: PropertyValue
    value: 0.047
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.93
  additional property: Liveness
    type: PropertyValue
    value: 0.105
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.257
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.193
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

On an Overgrown Path, JW VIII/17, Book 1: No. 4, The Madonna of Frydek
type: MusicRecording
duration: PT2M54S
duration ms: 174919
explicit: false
by artist: Leoš Janáček
by artist: Lars Vogt
in album: Janáček: Piano Works
  type: MusicAlbum
  date published: 2021-02-05
popularity: 5
genre: classical
genre: czech-classical
genre: early-modern-classical
genre: contemporary-classical
genre: post-romantic-era
isrc code: FINDE2000216
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T18:56:47+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x594aec3c6710953f58a179e2781c55a368478fd7eda6339ea4fa71e6b665f76b
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/FINDE2000216
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 0x594aec3c6710953f58a179e2781c55a368478fd7eda6339ea4fa71e6b665f76b. 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/FINDE2000216.
  date published: 2026-07-08T03:22:41Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 4, The Madonna of Frydek
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.319
  additional property: Musical Key
    type: PropertyValue
    value: 1
  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: 0.001
  additional property: Speechiness
    type: PropertyValue
    value: 0.048
  additional property: Acousticness
    type: PropertyValue
    value: 0.977
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.877
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.19
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.016
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
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On an Overgrown Path, JW VIII/17, Book 1: No. 5, They Chattered Like Swallows
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T10:20:10Z
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On an Overgrown Path, JW VIII/17, Book 1: No. 6, Words Fail!
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 6, Words Fail!
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On an Overgrown Path, JW VIII/17, Book 1: No. 8, Unutterable Anguish
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popularity: 3
genre: classical
genre: czech-classical
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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: On an Overgrown Path, JW VIII/17, Book 1: No. 8, Unutterable Anguish
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On an Overgrown Path, JW VIII/17, Book 1: No. 9, In Tears
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by artist: Lars Vogt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-08-01T03:13:03Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 9, In Tears
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On an Overgrown Path, JW VIII/17, Book 1: No. 10, The Barn Owl Has Not Flown Away!
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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: 2026-07-31T09:25:34Z
audio: On an Overgrown Path, JW VIII/17, Book 1: No. 10, The Barn Owl Has Not Flown Away!
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On an Overgrown Path, JW VIII/17, Book 2: No. 11, Andante
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by artist: Lars Vogt
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popularity: 3
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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
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  date published: 2026-07-08T03:20:19Z
audio: On an Overgrown Path, JW VIII/17, Book 2: No. 11, Andante
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On an Overgrown Path, JW VIII/17, Book 2: No. 12, Allegretto - Presto
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popularity: 3
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genre: contemporary-classical
genre: post-romantic-era
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additional property: OTSVerificationAPI
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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On an Overgrown Path, JW VIII/17, Book 2: No. 13, Più mosso
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Dvořák: Dumky & Zypressen: Shostakovich: Piano Trio No. 1 (Live)
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Smetana, Ravel & Watkins: Piano Trios (Live)
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Schubert: Chamber Works
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track: Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: II. Andante con moto
track: Piano Trio No. 1 in B-Flat Major, Op. 99, D. 898: III. Scherzo. Allegro - Trio
track: Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: III. Scherzando. Allegro moderato
track: Piano Trio No. 1 in B-Flat Major, Op. 99, D. 898: IV. Rondo. Allegro vivace
track: Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: IV. Allegro moderato
track: Piano Trio in E-Flat Major, Op. 148, D. 897 "Notturno"
track: Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
track: Rondo in B Minor for Violin & Piano, Op. 70, D. 895 "Rondeau brillant"
track: Arpeggione Sonata in A Minor, D. 821: II. Adagio
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Piano Trio No. 1 in B-Flat Major, Op. 99, D. 898: III. Scherzo. Allegro - Trio
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Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: III. Scherzando. Allegro moderato
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Piano Trio No. 1 in B-Flat Major, Op. 99, D. 898: IV. Rondo. Allegro vivace
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Piano Trio No. 2 in E-Flat Major, Op. 100, D. 929: IV. Allegro moderato
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Piano Trio in E-Flat Major, Op. 148, D. 897 "Notturno"
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Arpeggione Sonata in A Minor, D. 821: I. Allegro moderato
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Rondo in B Minor for Violin & Piano, Op. 70, D. 895 "Rondeau brillant"
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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
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  date published: 2026-07-31T02:19:15Z
audio: Rondo in B Minor for Violin & Piano, Op. 70, D. 895 "Rondeau brillant"
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Arpeggione Sonata in A Minor, D. 821: II. Adagio
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by artist: Tanja Tetzlaff
by artist: Lars Vogt
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genre: classical
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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
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  date published: 2026-07-08T03:20:19Z
audio: Arpeggione Sonata in A Minor, D. 821: II. Adagio
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Arpeggione Sonata in A Minor, D. 821: III. Allegretto
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by artist: Franz Schubert
by artist: Tanja Tetzlaff
by artist: Lars Vogt
in album: Schubert: Chamber Works
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genre: classical
genre: classical-piano
genre: chamber-music
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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
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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
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  date published: 2026-07-08T03:22:41Z
audio: Arpeggione Sonata in A Minor, D. 821: III. Allegretto
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Dvořák: Piano Trios Nos. 3 & 4
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date published: 2018-10-05
track: Piano Trio No. 3 in F Minor, Op. 65, B. 130: I. Allegro ma non troppo
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    date published: 2018-10-05
  genre: classical
  genre: late-romantic-era
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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 0x458c050cdd67566bad432621d6c4d7dca7fbe02afdc89bc8f6e2a4f4c08d4249. 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/FINDE1800074.
    date published: 2026-07-29T14:28:24Z
  audio: Piano Trio No. 3 in F Minor, Op. 65, B. 130: I. Allegro ma non troppo
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track: Piano Trio No. 3 in F Minor, Op. 65, B. 130: II. Allegretto grazioso
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  additional property: OTSVerifyInstructions
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T03:35:13Z
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track: Piano Trio No. 3 in F Minor, Op. 65, B. 130: III. Poco adagio - Meno mosso
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  subject of: OpenTimestamps Proof of Existence
  audio: Piano Trio No. 3 in F Minor, Op. 65, B. 130: III. Poco adagio - Meno mosso
track: Piano Trio No. 3 in F Minor, Op. 65, B. 130: IV. Finale. Allegro con brio
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: I. Lento maestoso - Allegro quasi doppio movimento
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: II. Poco adagio - Vivace non troppo
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: III. Andante - Vivace non troppo
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: IV. Andante moderato - Allegretto scherzando
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: V. Allegro - Meno mosso
track: Piano Trio No. 4 in E Minor, Op. 90, B. 166: VI. Lento maestoso - Vivace

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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OTSVerificationAPI
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OTSTimestamp
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
type: DigitalDocument
encoding format: application/vnd.opentimestamps.ots
description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27675d66a7b59b19545f9d41767ca62c1720417a3c7e20a7b333414faaec6771. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/FINDE1800076.
date published: 2026-07-30T08:04:30Z

Piano Trio No. 3 in F Minor, Op. 65, B. 130: III. Poco adagio - Meno mosso
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Piano Trio No. 3 in F Minor, Op. 65, B. 130: IV. Finale. Allegro con brio
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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
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  date published: 2026-07-07T16:43:21Z
audio: Piano Trio No. 3 in F Minor, Op. 65, B. 130: IV. Finale. Allegro con brio
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: I. Lento maestoso - Allegro quasi doppio movimento
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duration: PT4M3S
duration ms: 243592
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by artist: Antonín Dvořák
by artist: Christian Tetzlaff
by artist: Tanja Tetzlaff
by artist: Lars Vogt
in album: Dvořák: Piano Trios Nos. 3 & 4
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  date published: 2018-10-05
genre: classical
genre: late-romantic-era
genre: czech-classical
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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
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  date published: 2026-07-30T06:57:05Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: I. Lento maestoso - Allegro quasi doppio movimento
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: II. Poco adagio - Vivace non troppo
type: MusicRecording
duration: PT6M56S
duration ms: 416691
explicit: false
by artist: Antonín Dvořák
by artist: Christian Tetzlaff
by artist: Tanja Tetzlaff
by artist: Lars Vogt
in album: Dvořák: Piano Trios Nos. 3 & 4
  type: MusicAlbum
  date published: 2018-10-05
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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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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  date published: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: II. Poco adagio - Vivace non troppo
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: III. Andante - Vivace non troppo
type: MusicRecording
duration: PT6M33S
duration ms: 393251
explicit: false
by artist: Antonín Dvořák
by artist: Christian Tetzlaff
by artist: Tanja Tetzlaff
by artist: Lars Vogt
in album: Dvořák: Piano Trios Nos. 3 & 4
  type: MusicAlbum
  date published: 2018-10-05
genre: classical
genre: late-romantic-era
genre: czech-classical
isrc code: FINDE1800080
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
  type: DigitalDocument
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  date published: 2026-07-30T20:09:33Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: III. Andante - Vivace non troppo
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: IV. Andante moderato - Allegretto scherzando
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duration: PT4M59S
duration ms: 299642
explicit: false
by artist: Antonín Dvořák
by artist: Christian Tetzlaff
by artist: Tanja Tetzlaff
by artist: Lars Vogt
in album: Dvořák: Piano Trios Nos. 3 & 4
  type: MusicAlbum
  date published: 2018-10-05
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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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
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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: 2026-07-31T00:26:26Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: IV. Andante moderato - Allegretto scherzando
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: V. Allegro - Meno mosso
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duration: PT4M39S
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by artist: Antonín Dvořák
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by artist: Tanja Tetzlaff
by artist: Lars Vogt
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  date published: 2018-10-05
genre: classical
genre: late-romantic-era
genre: czech-classical
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additional property: CopyrightID
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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: 2026-07-08T03:20:19Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: V. Allegro - Meno mosso
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Piano Trio No. 4 in E Minor, Op. 90, B. 166: VI. Lento maestoso - Vivace
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genre: classical
genre: late-romantic-era
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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: 2026-07-31T17:29:52Z
audio: Piano Trio No. 4 in E Minor, Op. 90, B. 166: VI. Lento maestoso - Vivace
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OTSVerifyInstructions
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OpenTimestamps Proof of Existence
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date published: 2026-07-31T09:50:11Z

Piano Trio No. 2 in C Major, Op. 87: II. Andante con moto
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Piano Trio No. 1 in B Major, Op. 8 (Revised 1889 Version): II. Scherzo: Allegro molto
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subject of: OpenTimestamps Proof of Existence
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Piano Trio No. 1 in B Major, Op. 8 (Revised 1889 Version): III. Adagio
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subject of: OpenTimestamps Proof of Existence
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Piano Trio No. 1 in B Major, Op. 8 (Revised 1889 Version): IV. Allegro
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subject of: OpenTimestamps Proof of Existence
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Piano Trio No. 3 in C Minor, Op. 101: I. Allegro energico
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subject of: OpenTimestamps Proof of Existence
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Piano Trio No. 3 in C Minor, Op. 101: III. Andante grazioso
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subject of: OpenTimestamps Proof of Existence
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Boulanger & Debussy & Hindemith (Live)
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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 0x2baffcfeb359b815f39bdb1807a9de3216d251a282cac64606a27dbf1660e7c8. 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/DEAQ71329501.
    date published: 2026-07-08T03:20:19Z
  audio: D'un soir triste (Arr. for Piano Trio) - Live
    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
      type: PropertyValue
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track: D'un matin de printemps (Arr. for Piano Trio) - Live
  type: MusicRecording
  duration: PT5M10S
  duration ms: 310733
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  by artist: Lili Boulanger
  by artist: Tanja Tetzlaff
  by artist: Gunilla Süssmann
  by artist: Wanzhen Li
  in album: Boulanger & Debussy & Hindemith (Live)
    type: MusicAlbum
    date published: 2013-08-19
  genre: choral
  isrc code: DEAQ71329502
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  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
    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/DEAQ71329502
  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 0xea02649947ec5bf7eca419c08cfd76c31be79ebd1e6712a1cbb2a23488d5b850. 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/DEAQ71329502.
    date published: 2026-07-08T03:20:19Z
  audio: D'un matin de printemps (Arr. for Piano Trio) - Live
    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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  by artist: Nadia Boulanger
  by artist: Gustav Rivinius
  by artist: Anna Hitaj
  in album: Boulanger & Debussy & Hindemith (Live)
    type: MusicAlbum
    date published: 2013-08-19
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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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    value: https://explorer.copyrightchains.com/tx/0xc9b694d28fcad50d5a4ab149b65c09c72cc411e60c3e9bf561e714b9725d6fae
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: 3 Pieces for Cello and Piano: No. 1, Modéré - Live
track: 3 Pieces for Cello and Piano: No. 2, Sans vitesse et à l'aise - Live

OTSHash
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OTSBitcoinBlock
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value: 960236

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960236

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ71329506

OTSTimestamp
type: PropertyValue
value: 2026-07-30T09:37:10Z

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 0xc9b694d28fcad50d5a4ab149b65c09c72cc411e60c3e9bf561e714b9725d6fae. 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/DEAQ71329506.
date published: 2026-07-30T09:37:10Z

3 Pieces for Cello and Piano: No. 1, Modéré - Live
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
  type: PropertyValue
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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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3 Pieces for Cello and Piano: No. 2, Sans vitesse et à l'aise - Live
type: MusicRecording
duration: PT1M40S
duration ms: 100840
explicit: false
by artist: Nadia Boulanger
by artist: Gustav Rivinius
by artist: Anna Hitaj
in album: Boulanger & Debussy & Hindemith (Live)
  type: MusicAlbum
  date published: 2013-08-19
isrc code: DEAQ71329507
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x36f4057ffd6240ad07ba4c4eb66c0ac60b796979ded1331e535b58fb60444614
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960108
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ71329507
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T13:09:35Z
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 0x36f4057ffd6240ad07ba4c4eb66c0ac60b796979ded1331e535b58fb60444614. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DEAQ71329507.
  date published: 2026-07-29T13:09:35Z
audio: 3 Pieces for Cello and Piano: No. 2, Sans vitesse et à l'aise - Live
  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
    type: PropertyValue
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  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
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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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Schubert: Schwanengesang
type: MusicAlbum
date published: 2022-09-23
track: Schwanengesang, D. 957: No. 4, Ständchen
  type: MusicRecording
  duration: PT3M34S
  duration ms: 214680
  explicit: false
  by artist: Franz Schubert
  by artist: Ian Bostridge
  by artist: Lars Vogt
  in album: Schubert: Schwanengesang
    type: MusicAlbum
    date published: 2022-09-23
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: NLE421805704
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-30T22:21:27+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc0524f6aeed57a5a754e7d48c22fab2f915706d6ffb7b205a88c78939b8acfe2
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960327
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960327
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421805704
  additional property: OTSTimestamp
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    value: 2026-07-31T00:26:26Z
  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 0xc0524f6aeed57a5a754e7d48c22fab2f915706d6ffb7b205a88c78939b8acfe2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/NLE421805704.
    date published: 2026-07-31T00:26:26Z
  audio: Schwanengesang, D. 957: No. 4, Ständchen
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 136.393
    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.38
    additional property: Energy
      type: PropertyValue
      value: 0.028
    additional property: Speechiness
      type: PropertyValue
      value: 0.046
    additional property: Acousticness
      type: PropertyValue
      value: 0.983
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.229
    additional property: Loudness (dB)
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      value: -25.242
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Einsamkeit, D. 620: I. Gib mir die Fülle der Einsamkeit!
  type: MusicRecording
  duration: PT3M50S
  duration ms: 230067
  explicit: false
  by artist: Franz Schubert
  by artist: Ian Bostridge
  by artist: Lars Vogt
  in album: Schubert: Schwanengesang
    type: MusicAlbum
    date published: 2022-09-23
  genre: classical
  genre: classical-piano
  genre: chamber-music
  isrc code: NLE421805715
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-31T04:21:51+00:00
  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x8f7bf507abd137e73c0ebcce7b355f64c53968c801dd5c6b2b8dd3761b3575d9
  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/NLE421805715
  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 0x8f7bf507abd137e73c0ebcce7b355f64c53968c801dd5c6b2b8dd3761b3575d9. 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/NLE421805715.
    date published: 2026-07-31T05:17:02Z
  audio: Einsamkeit, D. 620: I. Gib mir die Fülle der Einsamkeit!
    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
      type: PropertyValue
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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
      type: PropertyValue
      value: Minor
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  type: MusicRecording
  duration: PT3M58S
  duration ms: 238973
  explicit: false
  by artist: Franz Schubert
  by artist: Ian Bostridge
  by artist: Lars Vogt
  in album: Schubert: Schwanengesang
    type: MusicAlbum
    date published: 2022-09-23
  genre: classical
  genre: classical-piano
  genre: chamber-music
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
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  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
  additional property: OTSHash
  additional property: OTSBitcoinBlock
  additional property: OTSBitcoinBlockVerifyURL
  additional property: OTSVerificationAPI
  additional property: OTSTimestamp
  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
  audio: Nacht und Träume, D. 827

CopyrightRegisteredAt
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value: 2026-07-07T02:49:26+00:00

CopyrightChainExplorerURL
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value: https://explorer.copyrightchains.com/tx/0xd2a92be895f9e1d003194dbd3a71f92a4b338b0a1b5006cfbf9347a2243bf94e

OTSHash
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OTSBitcoinBlock
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value: 957118

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957118

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLE421805722

OTSTimestamp
type: PropertyValue
value: 2026-07-08T03:20:19Z

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 0xd2a92be895f9e1d003194dbd3a71f92a4b338b0a1b5006cfbf9347a2243bf94e. 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/NLE421805722.
date published: 2026-07-08T03:20:19Z

Nacht und Träume, D. 827
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additional property: Tempo (BPM)
  type: PropertyValue
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additional property: Musical Key
  type: PropertyValue
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additional property: Mode (Major/Minor)
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  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.108
additional property: Energy
  type: PropertyValue
  value: 0.01
additional property: Speechiness
  type: PropertyValue
  value: 0.044
additional property: Acousticness
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Triple Concerto in C Major for Piano, Violin and Cello, Op. 56: I. Allegro
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Triple Concerto in C Major for Piano, Violin and Cello, Op. 56: II. Largo
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Triple Concerto in C Major for Piano, Violin and Cello, Op. 56: III. Rondo alla polacca
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W.A. Mozart: Piano Concertos No. 21 in C Major, K. 467; Piano Concerto No. 27 in B-Flat Major, K. 595
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track: Piano Concerto No. 24 in C Minor, K. 491: I. Allegro
track: Piano Concerto No. 24 in C Minor, K. 491: II. Larghetto

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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
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    date published: 2026-07-30T20:11:13Z
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type: MusicAlbum
date published: 2023-01-13
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    date published: 2023-01-13
  genre: classical
  genre: german-romanticism
  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 0x15da2ea1c24c5d1ac147cd429f88a3a40cf7828ee8d7918229828fe8a8fa9090. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GB01A2200144.
    date published: 2026-07-29T19:35:34Z
  audio: Brahms: 3 Intermezzi, Op. 117: No. 1 in E-Flat Major
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    date published: 2023-01-13
  genre: classical
  genre: german-romanticism
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  genre: late-romantic-era
  genre: chamber-music
  genre: orchestral
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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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    date published: 2026-07-08T03:20:19Z
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  by artist: Lars Vogt
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  genre: classical
  genre: german-romanticism
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  additional property: OTSBitcoinBlock
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  additional property: OTSVerificationAPI
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  additional property: OTSVerifyInstructions
  subject of: OpenTimestamps Proof of Existence
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track: Brahms: 6 Piano Pieces, Op. 118: No. 2, Intermezzo in A Major
track: Brahms: 6 Piano Pieces, Op. 118: No. 3, Ballade in G Minor
track: Brahms: 6 Piano Pieces, Op. 118: No. 4, Intermezzo in F Minor
track: Brahms: 6 Piano Pieces, Op. 118: No. 5, Romance in F Major
track: Brahms: 6 Piano Pieces, Op. 118: No. 6, Intermezzo in E-Flat Minor
track: Brahms: 4 Piano Pieces, Op. 119: No. 1, Intermezzo in B Minor
track: Brahms: 4 Piano Pieces, Op. 119: No. 2, Intermezzo in E Minor
track: Brahms: 4 Piano Pieces, Op. 119: No. 3, Intermezzo in C Major
track: Brahms: 4 Piano Pieces, Op. 119: No. 4, Rhapsody in E-Flat Major
track: Brahms: Scherzo in E-Flat Major, Op. 4

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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
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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 0x96c91bd804a54671fbee399145fa467dd73f4cbe2f1a5828a3e3cfc9791271df. 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/GB01A2200146.
date published: 2026-07-08T03:20:19Z

Brahms: 3 Intermezzi, Op. 117: No. 3 in C-Sharp Minor
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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
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additional property: Danceability
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additional property: Energy
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additional property: Valence (Positivity)
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additional property: Loudness (dB)
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by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200147
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
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB01A2200147
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 0x0099f6829fce790223c79e6af1279b5d2320ff4a140dc7031daf1ab365d75cf2. 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/GB01A2200147.
  date published: 2026-07-30T17:23:26Z
audio: Brahms: 6 Piano Pieces, Op. 118: No. 1, Intermezzo in A Minor
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by artist: Lars Vogt
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genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
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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: 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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab9b57b857c1afde815a5aeafe441dd6825c23d56f8b5deebcf72eaf959d667. 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/GB01A2200148.
  date published: 2026-07-13T07:53:33Z
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by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
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genre: classical
genre: german-romanticism
genre: classical-piano
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genre: chamber-music
genre: orchestral
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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/GB01A2200149
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 0xbacc79bd9faab0660454d47ea15683a42e9d2c1f65a81eeda47fa458f019733f. 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/GB01A2200149.
  date published: 2026-07-08T03:20:19Z
audio: Brahms: 6 Piano Pieces, Op. 118: No. 3, Ballade in G Minor
  type: AudioObject
  additional property: Tempo (BPM)
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    value: 97.565
  additional property: Musical Key
    type: PropertyValue
    value: 3
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.338
  additional property: Energy
    type: PropertyValue
    value: 0.048
  additional property: Speechiness
    type: PropertyValue
    value: 0.049
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.903
  additional property: Liveness
    type: PropertyValue
    value: 0.141
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.17
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.278
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brahms: 6 Piano Pieces, Op. 118: No. 4, Intermezzo in F Minor
type: MusicRecording
duration: PT2M53S
duration ms: 173866
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200150
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-29T18:46:20+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf5adf65789d47bed8f701b0e3cab6c6ea2e68a360b52be760806e5156887cb95
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960138
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960138
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB01A2200150
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-29T19:35:34Z
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 0xf5adf65789d47bed8f701b0e3cab6c6ea2e68a360b52be760806e5156887cb95. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GB01A2200150.
  date published: 2026-07-29T19:35:34Z
audio: Brahms: 6 Piano Pieces, Op. 118: No. 4, Intermezzo in F Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 107.242
  additional property: Musical Key
    type: PropertyValue
    value: 5
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.188
  additional property: Energy
    type: PropertyValue
    value: 0.017
  additional property: Speechiness
    type: PropertyValue
    value: 0.037
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.95
  additional property: Liveness
    type: PropertyValue
    value: 0.116
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.073
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.164
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Brahms: 6 Piano Pieces, Op. 118: No. 5, Romance in F Major
type: MusicRecording
duration: PT3M56S
duration ms: 236866
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200151
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T04:12:07+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a6b8245f04eaa31e777bf71b8d80b90a3d51382a2437b2ea8747d204006ed3c
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/GB01A2200151
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 0x7a6b8245f04eaa31e777bf71b8d80b90a3d51382a2437b2ea8747d204006ed3c. 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/GB01A2200151.
  date published: 2026-07-08T03:20:19Z
audio: Brahms: 6 Piano Pieces, Op. 118: No. 5, Romance in F Major
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.566
  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: 0.287
  additional property: Energy
    type: PropertyValue
    value: 0.003
  additional property: Speechiness
    type: PropertyValue
    value: 0.039
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.931
  additional property: Liveness
    type: PropertyValue
    value: 0.061
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.15
  additional property: Loudness (dB)
    type: PropertyValue
    value: -41.74
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brahms: 6 Piano Pieces, Op. 118: No. 6, Intermezzo in E-Flat Minor
type: MusicRecording
duration: PT5M34S
duration ms: 334293
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200152
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:18:31+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5bad10b549bf20d44c1f14f8cac6d2a891e033fd0313116eb76483d42374b799
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/GB01A2200152
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 0x5bad10b549bf20d44c1f14f8cac6d2a891e033fd0313116eb76483d42374b799. 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/GB01A2200152.
  date published: 2026-07-08T03:20:19Z
audio: Brahms: 6 Piano Pieces, Op. 118: No. 6, Intermezzo in E-Flat Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 114.891
  additional property: Musical Key
    type: PropertyValue
    value: 10
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.333
  additional property: Energy
    type: PropertyValue
    value: 0.005
  additional property: Speechiness
    type: PropertyValue
    value: 0.057
  additional property: Acousticness
    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.933
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.093
  additional property: Loudness (dB)
    type: PropertyValue
    value: -29.543
  additional property: Key Name
    type: PropertyValue
    value: Bb
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Brahms: 4 Piano Pieces, Op. 119: No. 1, Intermezzo in B Minor
type: MusicRecording
duration: PT4M46S
duration ms: 286933
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200153
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-30T09:29:46+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9a50607babbc7224b172554b5d3724f6c0cfab3dab4555c91cc7b9b70ed61fb9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960241
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960241
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GB01A2200153
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-30T09:58:01Z
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 0x9a50607babbc7224b172554b5d3724f6c0cfab3dab4555c91cc7b9b70ed61fb9. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/GB01A2200153.
  date published: 2026-07-30T09:58:01Z
audio: Brahms: 4 Piano Pieces, Op. 119: No. 1, Intermezzo in B Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 104.284
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.309
  additional property: Energy
    type: PropertyValue
    value: 0.002
  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.981
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.806
  additional property: Liveness
    type: PropertyValue
    value: 0.085
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.099
  additional property: Loudness (dB)
    type: PropertyValue
    value: -38.345
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brahms: 4 Piano Pieces, Op. 119: No. 2, Intermezzo in E Minor
type: MusicRecording
duration: PT5M25S
duration ms: 325800
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200154
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3f8540e06c24d0e396a8a7c4c3447cd72b09f7dc775f5a3bb840f9df79e41ba
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/GB01A2200154
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 0xd3f8540e06c24d0e396a8a7c4c3447cd72b09f7dc775f5a3bb840f9df79e41ba. 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/GB01A2200154.
  date published: 2026-07-31T06:42:11Z
audio: Brahms: 4 Piano Pieces, Op. 119: No. 2, Intermezzo in E Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 98.783
  additional property: Musical Key
    type: PropertyValue
    value: 11
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.238
  additional property: Energy
    type: PropertyValue
    value: 0.009
  additional property: Speechiness
    type: PropertyValue
    value: 0.044
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.912
  additional property: Liveness
    type: PropertyValue
    value: 0.069
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.062
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.959
  additional property: Key Name
    type: PropertyValue
    value: B
  additional property: Mode Name
    type: PropertyValue
    value: Major

Brahms: 4 Piano Pieces, Op. 119: No. 3, Intermezzo in C Major
type: MusicRecording
duration: PT1M47S
duration ms: 107266
explicit: false
by artist: Johannes Brahms
by artist: Lars Vogt
in album: Brahms: 3 Intermezzi, Op. 117 & Klavierstücke, Op. 118 & 119
  type: MusicAlbum
  date published: 2023-01-13
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: GB01A2200155
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-22T21:29:56+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4cc16e7bae56bcbfb738e7d6997a5c64790c2a34c04b4346180e1d5e0d533402
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/GB01A2200155
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
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  date published: 2026-07-08T03:20:19Z
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Schumann: Kreisleriana, Op. 16, Bunte Blätter, Op. 99 & Piano Concerto, Op. 54
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track: Quintette pour clarinette en La Majeur, K. 581: IV. Allegretto con variazioni

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Quintette pour clarinette en La Majeur, K. 581: II. Larghetto
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Quintette pour clarinette en La Majeur, K. 581: III. Menuetto
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Quintette pour clarinette en La Majeur, K. 581: IV. Allegretto con variazioni
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Brahms: Piano Sonatas & Ballades
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Melodramas (Live)
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Beethoven: Violin Sonatas, Op. 30 Nos. 1-3
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Brahms: Piano Concerto No. 2 & Handel Variations
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-31T20:42:35Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-08-01T01:44:32Z
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-29T19:35:34Z
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  subject of: OpenTimestamps Proof of Existence
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track: Violin Sonata No. 2 in A Major, Op. 100: III. Allegro grazioso (quasi andante)
track: Violin Sonata No. 3 in D Minor, Op. 108: I. Allegro
track: Violin Sonata No. 3 in D Minor, Op. 108: II. Adagio
track: Violin Sonata No. 3 in D Minor, Op. 108: III. Un poco presto e con sentimento
track: Violin Sonata No. 3 in D Minor, Op. 108: IV. Presto agitato

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OpenTimestamps Proof of Existence
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subject of: OpenTimestamps Proof of Existence
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Violin Sonata No. 3 in D Minor, Op. 108: I. Allegro
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Violin Sonata No. 3 in D Minor, Op. 108: III. Un poco presto e con sentimento
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Violin Sonata No. 3 in D Minor, Op. 108: IV. Presto agitato
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Mozart & Mendelssohn: Piano Concertos
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…for Children: Piano Works by Larcher, Schumann & Bartók
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  subject of: OpenTimestamps Proof of Existence
  audio: 12 Pieces for Pianists and other Children: No. 5, (The day) When I lost my funny green dog
track: Album für die Jugend, Op. 68, Pt. 1: No. 1, Melodie
track: Album für die Jugend, Op. 68, Pt. 1: No. 4, Ein Choral
track: For Children, Sz. 42, Vol. 1: No. 3, Quasi adagio
track: For Children, Sz. 42, Vol. 1: No. 11, Lento

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OTSVerificationAPI
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OTSTimestamp
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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

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

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Album für die Jugend, Op. 68, Pt. 1: No. 1, Melodie
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-02T03:55:08Z
audio: Album für die Jugend, Op. 68, Pt. 1: No. 1, Melodie
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Album für die Jugend, Op. 68, Pt. 1: No. 4, Ein Choral
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by artist: Lars Vogt
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T15:59:18Z
audio: Album für die Jugend, Op. 68, Pt. 1: No. 4, Ein Choral
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For Children, Sz. 42, Vol. 1: No. 3, Quasi adagio
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: For Children, Sz. 42, Vol. 1: No. 3, Quasi adagio
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For Children, Sz. 42, Vol. 1: No. 11, Lento
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T12:24:41Z
audio: For Children, Sz. 42, Vol. 1: No. 11, Lento
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  subject of: OpenTimestamps Proof of Existence
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    date published: 2026-07-30T17:23:26Z
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  subject of: OpenTimestamps Proof of Existence
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3 Nocturnes, Op. 9: No. 2 in E-Flat Major. Andante
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Nocturne in C Minor, KK IVb/8
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Nocturne in C-Sharp Minor, KK IVa/16
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Schumann: Violin Sonatas
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Schubert & Britten & Shostakovich
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On the Overgrown Path, Book 1, No. 7: Dobrou noc!
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Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: I. Allegro appassionato (Live, 2002)
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Brahms: Clarinet Sonata No. 1 in F Minor, Op. 120 No. 1: II. Andante un poco adagio (Live, 2002)
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