Peter De Jager
type: MusicGroup
description: Peter de Jager (born 1955) is a South African-born Canadian computer engineer, best known for his Y2K early 1990s outcry warning; he is the namesake of the de Jager Year 2000 index, which began tradin
popularity: 4
followers: 77
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc452d6ff921d722196142e2632600014e75810e924dc81d782658b921957acf5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954618
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954618
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c86d14e7-5a1c-4dcc-8256-15203620c936.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/c86d14e7-5a1c-4dcc-8256-15203620c936.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/c86d14e7-5a1c-4dcc-8256-15203620c936
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:05:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 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. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin 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 0xc452d6ff921d722196142e2632600014e75810e924dc81d782658b921957acf5. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c86d14e7-5a1c-4dcc-8256-15203620c936.json and https://artists.proofprofile.net/proofs/artist/c86d14e7-5a1c-4dcc-8256-15203620c936.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T23:05:13Z
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album: Traces
  type: MusicAlbum
  date published: 2024-09-19
album: Johannes Brahms: Music for Clarinet and Piano
  type: MusicAlbum
  date published: 2021-03-12
album: AMEB Trumpet Series 2 Preliminary (Recorded Accompaniment)
  type: MusicAlbum
  date published: 2019-11-15
album: AMEB Clarinet Series 3 Preliminary Grade (Piano Accompaniments)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Clarinet Series 3 Grade 3 (Piano Accompaniments)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Clarinet Series 3 Grade 2 (Piano Accompaniments)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Cello Series 2 Preliminary Grade (Piano Accompaniment)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Cello Series 2 Grade 3 (Piano Accompaniment)
  type: MusicAlbum
  date published: 2017-11-15
  track: Budapesto - Piano Accompaniment
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    duration: PT1M32S
    duration ms: 92240
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    by artist: Carey Cheney
    by artist: Peter De Jager
    in album: AMEB Cello Series 2 Grade 3 (Piano Accompaniment)
      type: MusicAlbum
      date published: 2017-11-15
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    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-31T16:45:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xf389159b7e18c33975b75fdde6a63dc26f04f4d2eb40855128938227dc5e3ad7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 960441
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/960441
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1700116
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-31T17:29:52Z
    additional property: OTSVerifyInstructions
      type: PropertyValue
      value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf389159b7e18c33975b75fdde6a63dc26f04f4d2eb40855128938227dc5e3ad7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1700116.
      date published: 2026-07-31T17:29:52Z
    audio: Budapesto - Piano Accompaniment
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      additional property: Musical Key
        type: PropertyValue
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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
        value: 0.571
      additional property: Energy
        type: PropertyValue
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      additional property: Speechiness
        type: PropertyValue
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      additional property: Acousticness
        type: PropertyValue
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      additional property: Instrumentalness
        type: PropertyValue
        value: 0.972
      additional property: Liveness
        type: PropertyValue
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      additional property: Valence (Positivity)
        type: PropertyValue
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      additional property: Loudness (dB)
        type: PropertyValue
        value: -28.011
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: AMEB Cello Series 2 Grade 2 (Piano Accompaniment)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Cello Series 2 Grade 1 (Piano Accompaniment)
  type: MusicAlbum
  date published: 2017-11-15
album: AMEB Clarinet Series 3 Grade 1 (Piano Accompaniment)
  type: MusicAlbum
  date published: 2017-03-15
album: AMEB Oboe Series 1 Preliminary Grade (Piano Accompaniments)
  type: MusicAlbum
  date published: 2015-11-15
album: AMEB Oboe Series 1 Grade 3 (Piano Accompaniment)
  type: MusicAlbum
  date published: 2015-11-15
album: AMEB Oboe Series 1 Grade 2 (Piano Accompaniments)
  type: MusicAlbum
  date published: 2015-11-15
album: AMEB Oboe Series 1 Grade 1 (Piano Accompaniments)
  type: MusicAlbum
  date published: 2015-11-15
album: AMEB Flute Series 3 Third Grade (Piano Accompaniment)
  type: MusicAlbum
  date published: 2015-03-10
album: AMEB Flute Series 3 Second Grade (Piano Accompaniment)
  type: MusicAlbum
  date published: 2015-03-10
album: AMEB Flute Series 3 Preliminary Grade (Piano Accompaniment)
  type: MusicAlbum
  date published: 2015-03-10
album: AMEB Flute Series 3 First Grade (Piano Accompaniment)
  type: MusicAlbum
  date published: 2015-03-10
album: AMEB Piano Series 17 Grade 8
  type: MusicAlbum
  date published: 2014-06-14
  track: 15 études de virtuosité, Op. 72: No. 2 in G Minor, Etude
    type: MusicRecording
    duration: PT2M10S
    duration ms: 130786
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    by artist: Moritz Moszkowski
    by artist: Peter De Jager
    in album: AMEB Piano Series 17 Grade 8
      type: MusicAlbum
      date published: 2014-06-14
    genre: german-romanticism
    genre: late-romantic-era
    genre: polish-classical
    isrc code: AUFFF1400113
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    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: 15 études de virtuosité, Op. 72: No. 2 in G Minor, Etude
  track: Nocturne oubliée, KK Anh Ia6
  track: Mantras And Night Flowers: No. 2, Frangipani
  track: Odeon
album: AMEB Piano Series 17 Grade 7
album: AMEB Piano Series 17 Grade 6
album: AMEB Piano Series 17 Grade 5
album: French Sonatas
album: Northern Lights: Piano Music From Scandinavia
album: March of the Women 2024: Connecting Australia, Volume Three
album: French Romanticism: Piano Music of the 19th Century
album: Noteworthy Women: Piano Music by Female Composers
album: The Bach Family: Keyboard Works
album: Angry Tunes
album: Piano Music From Hungary: Bartok, Heller, Liszt
album: Haydn: Works for Piano

CopyrightRegisteredAt
type: PropertyValue
value: 2026-07-07T05:29:01+00:00

CopyrightChainExplorerURL
type: PropertyValue
value: https://explorer.copyrightchains.com/tx/0x022abb9b9aae347ae5f09ebd8dba1ef07c9250e1c6c793c869cd1c72e74cd7c9

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
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/AUFFF1400113

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 0x022abb9b9aae347ae5f09ebd8dba1ef07c9250e1c6c793c869cd1c72e74cd7c9. 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/AUFFF1400113.
date published: 2026-07-08T03:20:19Z

15 études de virtuosité, Op. 72: No. 2 in G Minor, Etude
type: AudioObject
additional property: Tempo (BPM)
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  value: 110.841
additional property: Musical Key
  type: PropertyValue
  value: 7
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.294
additional property: Energy
  type: PropertyValue
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additional property: Speechiness
  type: PropertyValue
  value: 0.033
additional property: Acousticness
  type: PropertyValue
  value: 0.975
additional property: Instrumentalness
  type: PropertyValue
  value: 0.841
additional property: Liveness
  type: PropertyValue
  value: 0.129
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.592
additional property: Loudness (dB)
  type: PropertyValue
  value: -25.349
additional property: Key Name
  type: PropertyValue
  value: G
additional property: Mode Name
  type: PropertyValue
  value: Minor

Nocturne oubliée, KK Anh Ia6
type: MusicRecording
duration: PT4M18S
duration ms: 258706
explicit: false
by artist: Frédéric Chopin
by artist: Caroline Almonte
in album: AMEB Piano Series 17 Grade 8
  type: MusicAlbum
  date published: 2014-06-14
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: AUFFF1400120
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T12:33:11+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xffd994af515ba7723f9edb605d5ca9eae5c3639ab0c8e4663410731fda578678
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/AUFFF1400120
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 0xffd994af515ba7723f9edb605d5ca9eae5c3639ab0c8e4663410731fda578678. 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/AUFFF1400120.
  date published: 2026-07-08T03:20:19Z
audio: Nocturne oubliée, KK Anh Ia6
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 138.376
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.27
  additional property: Energy
    type: PropertyValue
    value: 0.01
  additional property: Speechiness
    type: PropertyValue
    value: 0.05
  additional property: Acousticness
    type: PropertyValue
    value: 0.98
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.933
  additional property: Liveness
    type: PropertyValue
    value: 0.077
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.135
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.728
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Minor

Mantras And Night Flowers: No. 2, Frangipani
type: MusicRecording
duration: PT3M50S
duration ms: 230533
explicit: false
by artist: Ross Edwards
by artist: Caroline Almonte
in album: AMEB Piano Series 17 Grade 8
  type: MusicAlbum
  date published: 2014-06-14
isrc code: AUFFF1400124
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T03:10:50+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x54d369f42c545ab82477c7772f7a7d71dbf849078730b360a22901f409281c8a
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/AUFFF1400124
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 0x54d369f42c545ab82477c7772f7a7d71dbf849078730b360a22901f409281c8a. 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/AUFFF1400124.
  date published: 2026-07-08T03:20:19Z
audio: Mantras And Night Flowers: No. 2, Frangipani
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
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  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: 0.371
  additional property: Energy
    type: PropertyValue
    value: 0.036
  additional property: Speechiness
    type: PropertyValue
    value: 0.051
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.908
  additional property: Liveness
    type: PropertyValue
    value: 0.067
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.04
  additional property: Loudness (dB)
    type: PropertyValue
    value: -31.358
  additional property: Key Name
    type: PropertyValue
    value: F
  additional property: Mode Name
    type: PropertyValue
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Odeon
type: MusicRecording
duration: PT2M2S
duration ms: 122306
explicit: false
by artist: Ernesto Nazareth
by artist: Caroline Almonte
in album: AMEB Piano Series 17 Grade 8
  type: MusicAlbum
  date published: 2014-06-14
isrc code: AUFFF1400125
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T17:10:22+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x83cf6038d31158926e0eeb16093fa8fce3adf02c78ef8bef49fd16e3da459573
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/AUFFF1400125
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 0x83cf6038d31158926e0eeb16093fa8fce3adf02c78ef8bef49fd16e3da459573. 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/AUFFF1400125.
  date published: 2026-07-08T03:20:19Z
audio: Odeon
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.424
  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
    type: PropertyValue
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  additional property: Instrumentalness
    type: PropertyValue
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.915
  additional property: Loudness (dB)
    type: PropertyValue
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AMEB Piano Series 17 Grade 7
type: MusicAlbum
date published: 2014-06-14
track: Keyboard Sonata in F Minor, K. 239
  type: MusicRecording
  duration: PT1M47S
  duration ms: 107946
  explicit: false
  by artist: Domenico Scarlatti
  by artist: Caroline Almonte
  in album: AMEB Piano Series 17 Grade 7
    type: MusicAlbum
    date published: 2014-06-14
  genre: classical
  genre: early-music
  genre: baroque
  genre: italian-baroque
  isrc code: AUFFF1400098
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-31T15:50:24+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xd0f77a8e3f17e9a913195ade1ab6dcb0d7e7623620e55a903b2f5a3bdf7d742a
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960427
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960427
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1400098
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T15:59:18Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f77a8e3f17e9a913195ade1ab6dcb0d7e7623620e55a903b2f5a3bdf7d742a. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1400098.
    date published: 2026-07-31T15:59:18Z
  audio: Keyboard Sonata in F Minor, K. 239
    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
      type: PropertyValue
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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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AMEB Piano Series 17 Grade 6
type: MusicAlbum
date published: 2014-06-14
track: 2 rondeaux mignons, Op. 18: No. 1, Rondo
  type: MusicRecording
  duration: PT2M21S
  duration ms: 141773
  explicit: false
  by artist: Jan Václav Vorísek
  by artist: Caroline Almonte
  in album: AMEB Piano Series 17 Grade 6
    type: MusicAlbum
    date published: 2014-06-14
  isrc code: AUFFF1400087
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T12:33:53+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xffa5ae00219ed137c8b82d8b5e692b8d99e6d218ac7979cce531870ef872ced3
  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/AUFFF1400087
  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 0xffa5ae00219ed137c8b82d8b5e692b8d99e6d218ac7979cce531870ef872ced3. 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/AUFFF1400087.
    date published: 2026-07-08T03:20:19Z
  audio: 2 rondeaux mignons, Op. 18: No. 1, Rondo
    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
      value: 5
    additional property: Danceability
      type: PropertyValue
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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)
      type: PropertyValue
      value: -28.696
    additional property: Key Name
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    additional property: Mode Name
      type: PropertyValue
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AMEB Piano Series 17 Grade 5
type: MusicAlbum
date published: 2014-06-14
track: 18 études de genre, Op. 109: No. 5, La source
  type: MusicRecording
  duration: PT1M30S
  duration ms: 90160
  explicit: false
  by artist: Friedrich Burgmüller
  by artist: Caroline Almonte
  in album: AMEB Piano Series 17 Grade 5
    type: MusicAlbum
    date published: 2014-06-14
  genre: classical-piano
  isrc code: AUFFF1400066
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-29T22:10:02+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xe7a20d74fb89c8f25f252314712c9672d0127c6bc16f55d752fec187d766dad3
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960160
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960160
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1400066
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-29T22:48:59Z
  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 0xe7a20d74fb89c8f25f252314712c9672d0127c6bc16f55d752fec187d766dad3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/AUFFF1400066.
    date published: 2026-07-29T22:48:59Z
  audio: 18 études de genre, Op. 109: No. 5, La source
    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
      type: PropertyValue
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    additional property: Acousticness
      type: PropertyValue
      value: 0.991
    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
      value: -35.418
    additional property: Key Name
      type: PropertyValue
      value: G
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 6 Sonatinas, Op. 20, No. 6: II. Rondo
  type: MusicRecording
  duration: PT2M33S
  duration ms: 153946
  explicit: false
  by artist: Jan Ladislav Dussek
  by artist: Caroline Almonte
  in album: AMEB Piano Series 17 Grade 5
    type: MusicAlbum
    date published: 2014-06-14
  genre: classical
  genre: classical-piano
  isrc code: AUFFF1400070
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-06T22:45:08+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x6040b74371d00b357b95e65828ccc993450ed9d467d2458859ef41f4aae81795
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
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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/AUFFF1400070
  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 0x6040b74371d00b357b95e65828ccc993450ed9d467d2458859ef41f4aae81795. 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/AUFFF1400070.
    date published: 2026-07-08T03:20:19Z
  audio: 6 Sonatinas, Op. 20, No. 6: II. Rondo
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
      type: PropertyValue
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    additional property: Mode (Major/Minor)
      type: PropertyValue
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    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.411
    additional property: Energy
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    additional property: Speechiness
      type: PropertyValue
      value: 0.054
    additional property: Acousticness
      type: PropertyValue
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
      type: PropertyValue
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
      type: PropertyValue
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    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: 12 Etüden, Op. 39: No. 12, Alla tarantella
  type: MusicRecording
  duration: PT1M19S
  duration ms: 79173
  explicit: false
  by artist: Edward MacDowell
  by artist: Caroline Almonte
  in album: AMEB Piano Series 17 Grade 5
    type: MusicAlbum
    date published: 2014-06-14
  genre: late-romantic-era
  genre: early-modern-classical
  genre: american-romanticism
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  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x0866a87d66d70ea4ba1eb7a8e786574071415d17be04ac1eb4ff1c25883493d4
  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: 12 Etüden, Op. 39: No. 12, Alla tarantella
track: En vacances: Invocation à Schumann

OTSHash
type: PropertyValue

OTSBitcoinBlock
type: PropertyValue
value: 960291

OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/960291

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1400074

OTSTimestamp
type: PropertyValue
value: 2026-07-30T18:23:33Z

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 0x0866a87d66d70ea4ba1eb7a8e786574071415d17be04ac1eb4ff1c25883493d4. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUFFF1400074.
date published: 2026-07-30T18:23:33Z

12 Etüden, Op. 39: No. 12, Alla tarantella
type: AudioObject
additional property: Tempo (BPM)
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additional property: Musical Key
  type: PropertyValue
  value: 3
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.497
additional property: Energy
  type: PropertyValue
  value: 0.043
additional property: Speechiness
  type: PropertyValue
  value: 0.048
additional property: Acousticness
  type: PropertyValue
  value: 0.972
additional property: Instrumentalness
  type: PropertyValue
  value: 0.831
additional property: Liveness
  type: PropertyValue
  value: 0.141
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.864
additional property: Loudness (dB)
  type: PropertyValue
  value: -29.047
additional property: Key Name
  type: PropertyValue
  value: Eb
additional property: Mode Name
  type: PropertyValue
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En vacances: Invocation à Schumann
type: MusicRecording
duration: PT3M8S
duration ms: 188693
explicit: false
by artist: Déodat de Séverac
by artist: Caroline Almonte
in album: AMEB Piano Series 17 Grade 5
  type: MusicAlbum
  date published: 2014-06-14
genre: early-modern-classical
genre: impressionism
isrc code: AUFFF1400075
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x3725bc7c68be035966c74d1cee2dd55d581abaf14c622a04952f79608644d1cd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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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/AUFFF1400075
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 0x3725bc7c68be035966c74d1cee2dd55d581abaf14c622a04952f79608644d1cd. 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/AUFFF1400075.
  date published: 2026-07-08T03:20:19Z
audio: En vacances: Invocation à Schumann
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 112.924
  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: 0.361
  additional property: Energy
    type: PropertyValue
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  additional property: Speechiness
    type: PropertyValue
    value: 0.054
  additional property: Acousticness
    type: PropertyValue
    value: 0.992
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.917
  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
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  additional property: Loudness (dB)
    type: PropertyValue
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French Sonatas
type: MusicAlbum
date published: 2013-08-04

Northern Lights: Piano Music From Scandinavia
type: MusicAlbum
date published: 2019-10-11
track: Andantino
  type: MusicRecording
  duration: PT2M22S
  duration ms: 142106
  explicit: false
  by artist: Niels Gade
  by artist: Caroline Almonte
  in album: Northern Lights: Piano Music From Scandinavia
    type: MusicAlbum
    date published: 2019-10-11
  genre: late-romantic-era
  genre: early-modern-classical
  genre: danish-classical
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  additional property: CopyrightID
  additional property: CopyrightStatus
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    value: registered
  additional property: CopyrightRegisteredAt
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  additional property: CopyrightChainExplorerURL
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    value: https://explorer.copyrightchains.com/tx/0x438c15b74529b4e34cb86b6438c48a8ce31ffba1322a04da4700ae50be2f147e
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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  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/AUFFF1400089
  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
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March of the Women 2024: Connecting Australia, Volume Three
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Noteworthy Women: Piano Music by Female Composers
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The Bach Family: Keyboard Works
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Angry Tunes
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Piano Music From Hungary: Bartok, Heller, Liszt
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Haydn: Works for Piano
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