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genre: classical
genre: classical piano
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album: Mussorgsky, Glazunov & Balakirev: Piano Works (Live at Lille Festival, 1993)
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  date published: 2021-09-24
album: Peaceful Tchaikovsky
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    subject of: OpenTimestamps Proof of Existence
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  track: 6 Morceaux, Op. 51: No. 6. Valse sentimentale
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  track: Swan Lake, Op. 20: Act I: The terrace in front of the palace of Prince Siegfried: No. 4. Pas de trois: I. Intrada
  track: String Quartet No. 1 in D Major, Op. 11: Ii. Andante cantabile
  track: Romance in F Minor, Op. 5
  track: Violin Concerto in D Major, Op. 35: Ii. Canzonetta: Andante
  track: 12 Morceaux, Op. 40: No. 2. Chanson triste in G Minor
  track: 6 Morceaux, Op. 19 (version for cello and orchestra): No. 4. Nocturne
  track: The Sleeping Beauty, Op. 66: Act Ii: The Vision: Panorama (Andantino: The Awakening)
  track: Album for the Young, Op. 39: No. 21. Sweet Dreams (Douce rãªverie)
  track: The Nutcracker Suite, Op. 71a: Iii. Dance of the Sugar Plum Fairies
  track: Souvenir d'un lieu cher, Op. 42 (arr. A.k. Glazunov for violin and orchestra): Iii. Mélodie
  track: 6 Romances, Op. 6 (arr. P. Nagy for piano): No. 6. None But the Lonely Heart
  track: The Snow Maiden, Op. 12: Act Iv: Declamation of the Fairy of Sping
album: İdil Biret Concerto Edition, Vol. 6
album: İdil Biret Archive Edition, Vol. 21
album: The Essential İdil Biret
album: Chopin For Inspiration
album: Chopin For Study
album: Chopin For Meditation
album: Peaceful Chopin
album: Relaxing Chopin
album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
album: İdil Biret Archive Edition, Vol. 20
album: Biret Concerto Edition, Vol. 10
album: ショパン・ザ・ベスト
album: Beethoven Edition, Vol. 20: Diabelli Variations, Op. 120
album: İdil Biret Archive Edition, Vol. 19
album: Biret Concerto Edition, Vol. 9
album: Concertos & Solo Music Edition
album: İdil Biret Brahms Edition
album: Rachmaninov: Preludes Op. 23 - Cinq Morceaux De Fantaisie Op. 3
album: J.S. Bach & Mozart: Piano Works
album: Chopin: Minute Waltz
album: İdil Biret 20th Century Piano Edition
album: İdil Biret Archive Edition, Vol. 18
album: İdil Biret Solo Edition, Vol. 9
album: İdil Biret Chamber Music Edition, Vol. 2
album: Ateş Pars: Piyano ve Orkestra için Konçerto
album: İdil Biret Solo Edition, Vol. 8
album: Beethoven: Piano Sonata No. 15 - Brahms: 8 Klavierstücke
album: İdil Biret Chamber Music Edition, Vol. 1
album: İdil Biret Archive Edition, Vol. 16: Johannes Brahms
album: Idil Biret Solo Edition, Vol. 7
album: Hindemith: Complete Piano Concertos
album: Mozart: Keyboard Works (Biret Archive Edition, Vol. 15)
album: Idil Biret Solo Edition, Vol. 6
album: Brahms: Symphony No. 4, Variations on a Theme by Paganini & 8 Klavierstücke (Live)
album: Idil Biret Archive Edition, Vol. 14
album: Idil Biret Archive Edition, Vol. 13
album: EOF - Cağ Dışı Bağıran
album: Idil Biret Solo Edition, Vol. 5
album: İdil Biret Solo Edition, Vol. 13
album: Easy-Listening Piano Classics: Brahms

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Swan Lake, Op. 20: Act I: The terrace in front of the palace of Prince Siegfried: No. 4. Pas de trois: I. Intrada
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subject of: OpenTimestamps Proof of Existence
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Romance in F Minor, Op. 5
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Violin Concerto in D Major, Op. 35: Ii. Canzonetta: Andante
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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12 Morceaux, Op. 40: No. 2. Chanson triste in G Minor
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
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6 Morceaux, Op. 19 (version for cello and orchestra): No. 4. Nocturne
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T08:30:10Z
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The Sleeping Beauty, Op. 66: Act Ii: The Vision: Panorama (Andantino: The Awakening)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-30T14:44:50Z
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Album for the Young, Op. 39: No. 21. Sweet Dreams (Douce rãªverie)
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
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The Nutcracker Suite, Op. 71a: Iii. Dance of the Sugar Plum Fairies
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T02:19:15Z
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Souvenir d'un lieu cher, Op. 42 (arr. A.k. Glazunov for violin and orchestra): Iii. Mélodie
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subject of: OpenTimestamps Proof of Existence
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6 Romances, Op. 6 (arr. P. Nagy for piano): No. 6. None But the Lonely Heart
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The Snow Maiden, Op. 12: Act Iv: Declamation of the Fairy of Sping
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İdil Biret Concerto Edition, Vol. 6
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İdil Biret Archive Edition, Vol. 21
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The Essential İdil Biret
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track: 16 Waltzes, Op. 39: No. 15 in A-Flat Major
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track: Scene from Childhood No. 1
track: 12 Etudes, Op. 10: Etude No. 12 in C Minor, Op. 10, No. 12, "revolutionary"
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track: Behr - Lachtäubchen, "Polka de WR"
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track: Ballade No. 2 in F Major, Op. 38
track: Scherzo No. 1 in B Minor, Op. 20

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Scene from Childhood No. 1
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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 0x04e687786e492eba713d19b16af5d8a270c7aac601104431077047ac65d9cc3a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199285001 — a six-check JSON result.
  date published: 2026-07-02T03:55:08Z
audio: Scene from Childhood No. 1
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12 Etudes, Op. 10: Etude No. 12 in C Minor, Op. 10, No. 12, "revolutionary"
type: MusicRecording
duration: PT3M1S
duration ms: 181600
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 10
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199230812
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230812
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 0xb8c450315a7f5ee968b492fcd57e0529976c2356b62934e96d52ff4ae35a32ee. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230812 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: 12 Etudes, Op. 10: Etude No. 12 in C Minor, Op. 10, No. 12, "revolutionary"
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13 Preludes, Op. 32: No. 5 in G Major. Moderato
type: MusicRecording
duration: PT3M13S
duration ms: 193200
explicit: false
by artist: Sergei Rachmaninoff
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 10
genre: classical
genre: classical-piano
genre: concerto
isrc code: HKI199288805
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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  value: 2026-06-18T11:11:52+00:00
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/956889
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199288805
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-06T06:56:49Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c2583d4a1b7fc00547f291e447ed8c1fb59636e79463b42cab25b6114454e2f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199288805 — a six-check JSON result.
  date published: 2026-07-06T06:56:49Z
audio: 13 Preludes, Op. 32: No. 5 in G Major. Moderato
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  additional property: Danceability
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  additional property: Valence (Positivity)
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Polonaises, Op. 40: Polonaise No. 3 in A Major, Op. 40, No. 1, "Military"
type: MusicRecording
duration: PT6M27S
duration ms: 387266
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 10
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199706911
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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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/HKI199706911
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 0x73c61a6d1764a61b860d9f015888fae08ea379eaef5e94d76f77b310d00d8fca. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199706911 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Polonaises, Op. 40: Polonaise No. 3 in A Major, Op. 40, No. 1, "Military"
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    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
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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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16 Waltzes, Op. 39 (Version for Solo Piano): No. 3 in G-Sharp Minor
type: MusicRecording
duration: PT0M52S
duration ms: 52200
explicit: false
by artist: Johannes Brahms
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 9
genre: classical
genre: german-romanticism
genre: classical-piano
genre: late-romantic-era
genre: chamber-music
genre: orchestral
isrc code: HKI199225707
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199225707
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 0xe1e54dffed0744d04333305f17d96e64246561b3da14c23f2a43b7d7153ee7e9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199225707 — a six-check JSON result.
  date published: 2026-07-07T13:25:45Z
audio: 16 Waltzes, Op. 39 (Version for Solo Piano): No. 3 in G-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: Danceability
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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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Nocturnes, Op. 15: No. 2 in F-Sharp Major
type: MusicRecording
duration: PT3M48S
duration ms: 228200
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 10
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199631505
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/957067
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199631505
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-07T16:54:37Z
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1657c222688f5812e9401f65c6ba71489df7a57142654f0c5dec496dffcdec7b. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199631505 — a six-check JSON result.
  date published: 2026-07-07T16:54:37Z
audio: Nocturnes, Op. 15: No. 2 in F-Sharp Major
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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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
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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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Keyboard Suite No. 1 in B-Flat Major, HWV 434: IV. Minuet (Arr. W. Kempff for Piano)
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duration: PT3M13S
duration ms: 193000
explicit: false
by artist: George Frideric Handel
by artist: Idil Biret
in album: The Essential İdil Biret
  type: MusicAlbum
  date published: 2024-02-02
popularity: 10
genre: classical
genre: opera
genre: early-music
genre: baroque
genre: english-baroque
genre: german-baroque
genre: choral
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199113808
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 0x03a88d9ea3759db29ebed9bbc4a1ad53d931338e49365f485ea68a026ef73d24. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199113808 — a six-check JSON result.
  date published: 2026-07-07T16:07:00Z
audio: Keyboard Suite No. 1 in B-Flat Major, HWV 434: IV. Minuet (Arr. W. Kempff for Piano)
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  additional property: Musical Key
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  additional property: Acousticness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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Piano Concerto No. 1 in E Minor, Op. 11, B. 53: II. Romanza. Larghetto
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by artist: Idil Biret
by artist: Slovak State Philharmonic Orchestra
by artist: Robert Stankovsky
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popularity: 10
genre: classical
genre: early-romantic-era
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-06T06:56:49Z
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21 Hungarian Dances, WoO 1 (Version for Solo Piano): No. 5 in F-Sharp Minor
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by artist: Idil Biret
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popularity: 9
genre: classical
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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Waltzes, Op. 64: No. 1, Molto vivace "Minute"
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by artist: Idil Biret
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popularity: 8
genre: classical
genre: early-romantic-era
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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
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24 Préludes, Op. 28: No. 9 in E Major
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by artist: Idil Biret
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popularity: 8
genre: classical
genre: early-romantic-era
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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: 24 Préludes, Op. 28: No. 9 in E Major
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3 Old Viennese Dances: Kreisler - Liebesleid
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by artist: Idil Biret
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-07T14:18:56Z
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Waltzes, Op. 69: No. 2 in B Minor
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popularity: 9
genre: classical
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
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8 Klavierstücke, Op. 76: No. 3, Intermezzo in A-Flat Major
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by artist: Idil Biret
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popularity: 8
genre: classical
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subject of: OpenTimestamps Proof of Existence
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Andante spianato et grande polonaise brillante in E-Flat Major, Op. 22: No. 1, Andante spianato, B. 88
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  date published: 2026-07-08T03:20:19Z
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Orphée et Eurydice, Wq. 30: Dance of the Blessed Spirits (Arr. W. Kempff for Piano)
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  date published: 2026-07-08T03:20:19Z
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Polonaise No. 6 in A-Flat Major, Op. 53 "Heroic"
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  date published: 2026-07-08T03:20:19Z
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Études, Book 2: No. 13, L’escalier du diable
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Piano Sonata No. 2 in B-Flat Minor, Op. 35 "Funeral March": III. Marche funebre: Lento
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16 Waltzes, Op. 39: No. 9 in D Minor
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24 Préludes, Op. 28: Prelude No. 15 in D-Flat Major, Op. 28, No. 15
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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: 24 Préludes, Op. 28: Prelude No. 15 in D-Flat Major, Op. 28, No. 15
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Piano Concerto No. 2 in G Minor, Op. 22: II. Allegro scherzando
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duration: PT6M6S
duration ms: 366133
explicit: false
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by artist: Idil Biret
by artist: Philharmonia Orchestra
by artist: James Loughran
in album: The Essential İdil Biret
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popularity: 6
genre: classical
genre: late-romantic-era
genre: french-romanticism
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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: Piano Concerto No. 2 in G Minor, Op. 22: II. Allegro scherzando
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Nocturne in G Major, Op. 37 No. 2: Nocturne No. 12 in G Major, Op. 37, No. 2
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duration: PT5M43S
duration ms: 343000
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by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 6
genre: classical
genre: early-romantic-era
genre: polish-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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648fb58d572c5ba4d5d827824269d2ffeea0560de3787bde96b7fdb6cc81a318. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231502 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Nocturne in G Major, Op. 37 No. 2: Nocturne No. 12 in G Major, Op. 37, No. 2
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Behr - Lachtäubchen, "Polka de WR"
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duration: PT4M0S
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explicit: false
by artist: Sergei Rachmaninoff
by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 6
genre: classical
genre: classical-piano
genre: concerto
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a94f7bf94b8f94fac5e988ca6f46923d26f800c68fd023cd9e0b945342414. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199721516 — a six-check JSON result.
  date published: 2026-07-08T03:22:41Z
audio: Behr - Lachtäubchen, "Polka de WR"
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Mazurka No. 23 in D Major, Op. 33 No. 2
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duration: PT2M38S
duration ms: 158453
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 6
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:22:41Z
audio: Mazurka No. 23 in D Major, Op. 33 No. 2
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Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
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duration: PT4M29S
duration ms: 269666
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 5
genre: classical
genre: early-romantic-era
genre: polish-classical
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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: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24fce60b864233313cb6952c82ae924700a458bad6f9df1e3b588f06ce2c80f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230803 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
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21 Hungarian Dances, WoO 1 (Version for Solo Piano): No. 1 in G Minor [1]
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duration: PT3M10S
duration ms: 190133
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by artist: Johannes Brahms
by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 6
genre: classical
genre: german-romanticism
genre: classical-piano
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
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f4430dab7b65021129be15d650623c6f8c622720c0ed3d69243e0ff7928c36. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199223517 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: 21 Hungarian Dances, WoO 1 (Version for Solo Piano): No. 1 in G Minor [1]
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Ballade No. 2 in F Major, Op. 38
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by artist: Frédéric Chopin
by artist: Idil Biret
in album: The Essential İdil Biret
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popularity: 6
genre: classical
genre: early-romantic-era
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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: Ballade No. 2 in F Major, Op. 38
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Scherzo No. 1 in B Minor, Op. 20
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duration: PT10M45S
duration ms: 645333
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by artist: Idil Biret
in album: The Essential İdil Biret
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  date published: 2024-02-02
popularity: 5
genre: classical
genre: early-romantic-era
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89ebf7d9e7a2cb78a9c25aeabc1571980806bf056d02188a232349cfaa932be. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199234201 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Scherzo No. 1 in B Minor, Op. 20
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Chopin For Inspiration
type: MusicAlbum
date published: 2021-12-31

Chopin For Study
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date published: 2021-12-24
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    date published: 2021-12-24
  popularity: 14
  genre: classical
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb08f72ab8c8c994298689aaaca9212c6ffc332c76eb566bf3f2361441451025. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231401 — a six-check JSON result.
    date published: 2026-07-02T03:55:08Z
  audio: Nocturne No. 1 in B-flat Minor, Op. 9, No. 1
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track: Berceuse in D-flat Major, Op. 57
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  duration ms: 283386
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    type: MusicAlbum
    date published: 2021-12-24
  popularity: 5
  genre: classical
  genre: early-romantic-era
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
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    date published: 2026-07-30T12:06:10Z
  audio: Berceuse in D-flat Major, Op. 57
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track: Nocturne No. 2 in E-flat Major, Op. 9, No. 2
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  genre: classical
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  subject of: OpenTimestamps Proof of Existence
  audio: Nocturne No. 2 in E-flat Major, Op. 9, No. 2
track: Piano Sonata No. 2 in B-flat Minor, Op. 35, "funeral March": Iii. Marche funebre: Lento

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CopyrightChainExplorerURL
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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 0xf8dbeb0ee94bb6faeb6a57dd36fd3bd63ebbac6969776af31adb79feac3ee5fe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231402 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Nocturne No. 2 in E-flat Major, Op. 9, No. 2
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Piano Sonata No. 2 in B-flat Minor, Op. 35, "funeral March": Iii. Marche funebre: Lento
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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: 2026-07-02T03:55:08Z
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Chopin For Meditation
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date published: 2021-12-03

Peaceful Chopin
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date published: 2021-10-29
track: 24 Preludes, Op. 28: Prelude No. 4 in E Minor, Op. 28, No. 4
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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: 2026-07-08T03:53:27Z
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Relaxing Chopin
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date published: 2021-10-15
track: Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
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  by artist: Idil Biret
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  genre: classical
  genre: early-romantic-era
  genre: polish-classical
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  additional property: OTSVerificationAPI
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  additional property: OTSTimestamp
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  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
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    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24fce60b864233313cb6952c82ae924700a458bad6f9df1e3b588f06ce2c80f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230803 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Études, Op. 10: Etude No. 3 in E Major, Op. 10, No. 3
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track: Nocturne No. 5 in F-sharp Major, Op. 15, No. 2
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  by artist: Idil Biret
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    type: MusicAlbum
    date published: 2021-10-15
  genre: classical
  genre: early-romantic-era
  genre: polish-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
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d861c8a67927e94bc77c4f72e47637223797124be449246b761835ea69c2d3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231405 — a six-check JSON result.
    date published: 2026-07-08T08:56:20Z
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track: Piano Concerto No. 1 in E Minor, Op. 11: Ii. Romanza: Larghetto
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  by artist: Frédéric Chopin
  by artist: Eldar Nebolsin
  by artist: Warsaw Philharmonic Orchestra
  by artist: Antoni Wit
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    type: MusicAlbum
    date published: 2021-10-15
  genre: classical
  genre: early-romantic-era
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  subject of: OpenTimestamps Proof of Existence
  audio: Piano Concerto No. 1 in E Minor, Op. 11: Ii. Romanza: Larghetto
track: Prelude in E Minor, Op. 28 No. 4 (Featured in "The Notebook")
track: Cantabile in B-flat Major
track: Berceuse in D-Flat Major, Op. 57

CopyrightChainExplorerURL
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OTSBitcoinBlock
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OTSBitcoinBlockVerifyURL
type: PropertyValue
value: https://blockstream.info/api/block-height/957122

OTSVerificationAPI
type: PropertyValue
value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191009002

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 0x98dad98da4ee5537e8a6157f7e3e066c40ba073cb7716d756c14ac0e62fb8fe6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI191009002 — a six-check JSON result.
date published: 2026-07-08T03:39:04Z

Piano Concerto No. 1 in E Minor, Op. 11: Ii. Romanza: Larghetto
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: Danceability
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additional property: Energy
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additional property: Speechiness
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additional property: Acousticness
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additional property: Valence (Positivity)
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Prelude in E Minor, Op. 28 No. 4 (Featured in "The Notebook")
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by artist: Frédéric Chopin
by artist: Idil Biret
in album: Relaxing Chopin
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genre: classical
genre: early-romantic-era
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f3047e918a56f8c3a68997535f17548c26dfa5cda0d2fd2d44508c81789bf0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199234004 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Prelude in E Minor, Op. 28 No. 4 (Featured in "The Notebook")
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Cantabile in B-flat Major
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explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: Relaxing Chopin
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genre: classical
genre: early-romantic-era
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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
  type: PropertyValue
  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23959a045d23ec083b464f04ab6d5bea69cd05ab337ea4a355756ea19c9164e0. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230413 — a six-check JSON result.
  date published: 2026-07-31T23:51:35Z
audio: Cantabile in B-flat Major
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Berceuse in D-Flat Major, Op. 57
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by artist: Idil Biret
in album: Relaxing Chopin
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  date published: 2021-10-15
genre: classical
genre: early-romantic-era
genre: polish-classical
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additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
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  value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d72c496ad58b900b0c39c34fc998cdf7f5c258c9c6cc5cdbb737be39a8943. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199230405 — a six-check JSON result.
  date published: 2026-07-31T21:25:57Z
audio: Berceuse in D-Flat Major, Op. 57
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    type: PropertyValue
    value: 0.989
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.914
  additional property: Liveness
    type: PropertyValue
    value: 0.101
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.227
  additional property: Loudness (dB)
    type: PropertyValue
    value: -23.503
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

おやすみショパン ～心地よい眠りのためのショパンメドレー～
type: MusicAlbum
date published: 2021-02-05
track: No. 1 in A-Flat Major "Farewell" (Featured in "The Others")
  type: MusicRecording
  duration: PT5M7S
  duration ms: 307466
  explicit: false
  by artist: Frédéric Chopin
  by artist: Idil Biret
  in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
    type: MusicAlbum
    date published: 2021-02-05
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: HKI199234709
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfafabcae042d1059cd0568d80fe1216d0e14e8c975402af143954cb7323e5011
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 960317
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960317
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199234709
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T21:35:24Z
  additional property: OTSVerifyInstructions
    type: PropertyValue
    value: 1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafabcae042d1059cd0568d80fe1216d0e14e8c975402af143954cb7323e5011. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199234709 — a six-check JSON result.
    date published: 2026-07-30T21:35:24Z
  audio: No. 1 in A-Flat Major "Farewell" (Featured in "The Others")
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 120.653
    additional property: Musical Key
      type: PropertyValue
      value: 8
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.373
    additional property: Energy
      type: PropertyValue
      value: 0.06
    additional property: Speechiness
      type: PropertyValue
      value: 0.041
    additional property: Acousticness
      type: PropertyValue
      value: 0.994
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.876
    additional property: Liveness
      type: PropertyValue
      value: 0.118
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.049
    additional property: Loudness (dB)
      type: PropertyValue
      value: -25.362
    additional property: Key Name
      type: PropertyValue
      value: Ab
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Berceuse in D-Flat Major, Op. 57
  type: MusicRecording
  duration: PT4M47S
  duration ms: 287773
  explicit: false
  by artist: Frédéric Chopin
  by artist: Idil Biret
  in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
    type: MusicAlbum
    date published: 2021-02-05
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: HKI199232205
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-07T13:14:09+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xfeb54bac52d24b39e4120d4a80f9f7127e00d42e7d03725a5ac69f99acff769d
  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/HKI199232205
  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 0xfeb54bac52d24b39e4120d4a80f9f7127e00d42e7d03725a5ac69f99acff769d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199232205 — a six-check JSON result.
    date published: 2026-07-08T03:20:19Z
  audio: Berceuse in D-Flat Major, Op. 57
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 122.796
    additional property: Musical Key
      type: PropertyValue
      value: 1
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.454
    additional property: Energy
      type: PropertyValue
      value: 0.208
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.989
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.944
    additional property: Liveness
      type: PropertyValue
      value: 0.092
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.173
    additional property: Loudness (dB)
      type: PropertyValue
      value: -21.87
    additional property: Key Name
      type: PropertyValue
      value: C#
    additional property: Mode Name
      type: PropertyValue
      value: Major
track: Nocturne in E-Flat Major, Op. 9 No. 2
  type: MusicRecording
  duration: PT4M34S
  duration ms: 274599
  explicit: false
  by artist: Frédéric Chopin
  by artist: Idil Biret
  in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
    type: MusicAlbum
    date published: 2021-02-05
  genre: classical
  genre: early-romantic-era
  genre: polish-classical
  isrc code: HKI199231402
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-11T02:31:56+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf8dbeb0ee94bb6faeb6a57dd36fd3bd63ebbac6969776af31adb79feac3ee5fe
  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: Nocturne in E-Flat Major, Op. 9 No. 2
track: Barcarolle in F-Sharp Major, Op. 60
track: No. 1 in B-Flat Minor
track: No. 2 in D-Flat Major, B. 96
track: Moderato in E Major, B. 151, Op. P2 No. 12
track: Waltz in F-Sharp Minor, Op. Posth., "Valse melancolique"
track: Etude No. 6 in E-Flat Minor, Op. 10, No. 6 (Arr. A. Glazunov)
track: Nocturne in C-Sharp Minor, Op. Posth.

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/HKI199231402

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 0xf8dbeb0ee94bb6faeb6a57dd36fd3bd63ebbac6969776af31adb79feac3ee5fe. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231402 — a six-check JSON result.
date published: 2026-07-08T03:20:19Z

Nocturne in E-Flat Major, Op. 9 No. 2
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 97.004
additional property: Musical Key
  type: PropertyValue
  value: 10
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 1
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.303
additional property: Energy
  type: PropertyValue
  value: 0.043
additional property: Speechiness
  type: PropertyValue
  value: 0.037
additional property: Acousticness
  type: PropertyValue
  value: 0.986
additional property: Instrumentalness
  type: PropertyValue
  value: 0.952
additional property: Liveness
  type: PropertyValue
  value: 0.092
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.089
additional property: Loudness (dB)
  type: PropertyValue
  value: -26.47
additional property: Key Name
  type: PropertyValue
  value: Bb
additional property: Mode Name
  type: PropertyValue
  value: Major

Barcarolle in F-Sharp Major, Op. 60
type: MusicRecording
duration: PT8M48S
duration ms: 528306
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
  type: MusicAlbum
  date published: 2021-02-05
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199232127
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T07:56:42+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x98e17af294a47b859ac003f89900a0ed02e52045453e5b85a4effad4116ebda9
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/HKI199232127
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 0x98e17af294a47b859ac003f89900a0ed02e52045453e5b85a4effad4116ebda9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199232127 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: Barcarolle in F-Sharp Major, Op. 60
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.122
  additional property: Musical Key
    type: PropertyValue
    value: 6
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.302
  additional property: Energy
    type: PropertyValue
    value: 0.06
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.991
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.883
  additional property: Liveness
    type: PropertyValue
    value: 0.109
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.054
  additional property: Loudness (dB)
    type: PropertyValue
    value: -24.906
  additional property: Key Name
    type: PropertyValue
    value: F#
  additional property: Mode Name
    type: PropertyValue
    value: Major

No. 1 in B-Flat Minor
type: MusicRecording
duration: PT5M35S
duration ms: 335600
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
  type: MusicAlbum
  date published: 2021-02-05
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199231401
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-06-25T23:56:28+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeb08f72ab8c8c994298689aaaca9212c6ffc332c76eb566bf3f2361441451025
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/HKI199231401
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 0xeb08f72ab8c8c994298689aaaca9212c6ffc332c76eb566bf3f2361441451025. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231401 — a six-check JSON result.
  date published: 2026-07-08T03:20:19Z
audio: No. 1 in B-Flat Minor
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 96.171
  additional property: Musical Key
    type: PropertyValue
    value: 1
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 6
  additional property: Danceability
    type: PropertyValue
    value: 0.32
  additional property: Energy
    type: PropertyValue
    value: 0.008
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.99
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.913
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.037
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.996
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

No. 2 in D-Flat Major, B. 96
type: MusicRecording
duration: PT6M19S
duration ms: 379411
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
  type: MusicAlbum
  date published: 2021-02-05
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199231408
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-31T23:57:25+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x92c4a372c676012a178ddb8bbb7c1728edcd7cc66b20103ec287fc97e091d07e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960485
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960485
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231408
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T00:10:46Z
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 0x92c4a372c676012a178ddb8bbb7c1728edcd7cc66b20103ec287fc97e091d07e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199231408 — a six-check JSON result.
  date published: 2026-08-01T00:10:46Z
audio: No. 2 in D-Flat Major, B. 96
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 95.961
  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: 0.393
  additional property: Energy
    type: PropertyValue
    value: 0.048
  additional property: Speechiness
    type: PropertyValue
    value: 0.035
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.878
  additional property: Liveness
    type: PropertyValue
    value: 0.155
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.039
  additional property: Loudness (dB)
    type: PropertyValue
    value: -25.398
  additional property: Key Name
    type: PropertyValue
    value: C#
  additional property: Mode Name
    type: PropertyValue
    value: Major

Moderato in E Major, B. 151, Op. P2 No. 12
type: MusicRecording
duration: PT1M49S
duration ms: 109240
explicit: false
by artist: Frédéric Chopin
by artist: Idil Biret
in album: おやすみショパン ～心地よい眠りのためのショパンメドレー～
  type: MusicAlbum
  date published: 2021-02-05
genre: classical
genre: early-romantic-era
genre: polish-classical
isrc code: HKI199234032
additional property: CopyrightID
additional property: CopyrightStatus
  type: PropertyValue
  value: registered
additional property: CopyrightRegisteredAt
  type: PropertyValue
  value: 2026-07-07T16:30:36+00:00
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4d387a2e9e7787af99f44517e75cea7a93df68498fc3c1d4e4638c1299c09551
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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Waltz in F-Sharp Minor, Op. Posth., "Valse melancolique"
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Etude No. 6 in E-Flat Minor, Op. 10, No. 6 (Arr. A. Glazunov)
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subject of: OpenTimestamps Proof of Existence
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Nocturne in C-Sharp Minor, Op. Posth.
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İdil Biret Archive Edition, Vol. 20
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date published: 2021-01-29

Biret Concerto Edition, Vol. 10
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date published: 2020-10-23

ショパン・ザ・ベスト
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Beethoven Edition, Vol. 20: Diabelli Variations, Op. 120
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date published: 2020-07-24

İdil Biret Archive Edition, Vol. 19
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date published: 2020-01-03

Biret Concerto Edition, Vol. 9
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date published: 2020-01-03

Concertos & Solo Music Edition
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date published: 2018-05-01

İdil Biret Brahms Edition
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Rachmaninov: Preludes Op. 23 - Cinq Morceaux De Fantaisie Op. 3
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J.S. Bach & Mozart: Piano Works
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Chopin: Minute Waltz
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date published: 2016-10-14

İdil Biret 20th Century Piano Edition
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date published: 2016-05-06

İdil Biret Archive Edition, Vol. 18
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date published: 2016-02-05

İdil Biret Solo Edition, Vol. 9
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İdil Biret Chamber Music Edition, Vol. 2
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date published: 2016-01-01

Ateş Pars: Piyano ve Orkestra için Konçerto
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İdil Biret Solo Edition, Vol. 8
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Beethoven: Piano Sonata No. 15 - Brahms: 8 Klavierstücke
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İdil Biret Chamber Music Edition, Vol. 1
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İdil Biret Archive Edition, Vol. 16: Johannes Brahms
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date published: 2014-10-07

Idil Biret Solo Edition, Vol. 7
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date published: 2013-12-03

Hindemith: Complete Piano Concertos
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date published: 2013-10-01

Mozart: Keyboard Works (Biret Archive Edition, Vol. 15)
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date published: 2013-09-23

Idil Biret Solo Edition, Vol. 6
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date published: 2013-06-04

Brahms: Symphony No. 4, Variations on a Theme by Paganini & 8 Klavierstücke (Live)
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date published: 2013-01-08

Idil Biret Archive Edition, Vol. 14
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date published: 2013-01-01

Idil Biret Archive Edition, Vol. 13
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date published: 2013-01-01

EOF - Cağ Dışı Bağıran
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date published: 2013-01-01

Idil Biret Solo Edition, Vol. 5
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date published: 2012-10-02

İdil Biret Solo Edition, Vol. 13
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date published: 2018-05-01

Easy-Listening Piano Classics: Brahms
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date published: 2010-02-23