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album: Musique D'étude Classique : La Musique pour Mieux Apprendre
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  date published: 2022-07-20
  track: Claire De Lune - Debussy - Lecture Classique
  track: Reverie - Debussy - Lecture Classique
  track: Pachelbel's Canon - Pachelbel - Lecture Classique
  track: Pathetique - Beethoven - Lecture Classique
  track: Cello Suite - Bach - Lecture Classique
  track: The Swan - Saint Saens - Lecture Classique
  track: Brahms Intermezzo No. 2 - Brahms - Lecture Classique
  track: La Fille Aux Cheveux De Lin - Debussy - Lecture Classique
  track: Pavane - Ravel - Lecture Classique
  track: Gymnopedies - Satie - Lecture Classique
  track: Moldau - Smentana - Lecture Classique
  track: Für Elise - Beethoven - Lecture Classique
  track: Gnossienne No. 1 - Satie - Lecture Classique
  track: Meditation From Thais - Massenet - Lecture Classique
  track: Deux Arabesques - Debussy - Lecture Classique
  track: Four Seasons - Vivaldi - Lecture Classique
  track: Ave Maria - Schubert - Lecture Classique
album: Musique Classique D'étude : Musique Calme pour L'apprentissage
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  date published: 2022-06-12
album: Musique Classique : Musique Classique Pour La Concentration
  type: MusicAlbum
  date published: 2022-05-09
album: Étude Classique : Musique Classique Relaxante à La Guitare
  type: MusicAlbum
  date published: 2022-04-13
album: Musique D'étude Classique Relaxante : Musique D'apprentissage
  type: MusicAlbum
  date published: 2022-03-09
album: Musique D'étude Classique : Musique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-02-18
album: Étude Classique : Musique Classique pour L'apprentissage
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  date published: 2022-01-06
  track: Pavane - Ravel - Musique D'étude Classique pour Guitare
  track: Clair De Lune - Debussy - Musique D'étude Classique pour Guitare
  track: Gymnopedies - Satie - Musique D'étude Classique pour Guitare
  track: Moldau - Smetana - Musique D'étude Classique pour Guitare
  track: Für Elise - Beethoven - Musique D'étude Classique pour Guitare
  track: Canon in D - Pachelbel - Musique D'étude Classique pour Guitare
  track: Spring The Four Seasons - Vivaldi - Musique D'étude Classique pour Guitare
  track: Pathetique - Beethoven - Musique D'étude Classique pour Guitare
  track: La Fille Aux Cheveux De Lin - Debussy - Musique D'étude Classique pour Guitare
album: Musique Classique Pour L'étude : Musique classique de Fond pour Piano pour Apprendre et Étudier
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  date published: 2021-12-06
album: Musique D'Étude Classique : Musique pour apprendre, Musique d'étude et Musique Classique pour se Concentrer
  type: MusicAlbum
  date published: 2021-11-15

Claire De Lune - Debussy - Lecture Classique
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audio: Claire De Lune - Debussy - Lecture Classique
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Reverie - Debussy - Lecture Classique
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audio: Reverie - Debussy - Lecture Classique
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Pachelbel's Canon - Pachelbel - Lecture Classique
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  date published: 2026-07-08T03:53:27Z
audio: Pachelbel's Canon - Pachelbel - Lecture Classique
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Pathetique - Beethoven - Lecture Classique
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Cello Suite - Bach - Lecture Classique
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The Swan - Saint Saens - Lecture Classique
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duration: PT3M17S
duration ms: 197040
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by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
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  date published: 2022-07-20
isrc code: GBRKQ2280475
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437ebd69f1d894aeee23fdb35d26cd124d771a29e27a5e572bc4baf773873580. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280475.
  date published: 2026-07-08T03:53:27Z
audio: The Swan - Saint Saens - Lecture Classique
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Brahms Intermezzo No. 2 - Brahms - Lecture Classique
type: MusicRecording
duration: PT3M25S
duration ms: 205852
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by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
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  date published: 2022-07-20
isrc code: GBRKQ2280478
additional property: CopyrightID
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additional property: CopyrightRegisteredAt
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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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 0x16682fa063b4c5975ab4bac0580b609557c3d2395f91ab1155e1cd6e33e60d81. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280478.
  date published: 2026-07-08T03:22:41Z
audio: Brahms Intermezzo No. 2 - Brahms - Lecture Classique
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La Fille Aux Cheveux De Lin - Debussy - Lecture Classique
type: MusicRecording
duration: PT3M9S
duration ms: 189196
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
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  date published: 2022-07-20
isrc code: GBRKQ2280481
additional property: CopyrightID
additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
  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
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
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  value: true
additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-08T03:20:19+00:00
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97bfd3926e8db47480f4f15558645c7b4b431368848557ae7ec4430a167b0e4e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280481.
  date published: 2026-07-08T08:56:20Z
audio: La Fille Aux Cheveux De Lin - Debussy - Lecture Classique
  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: 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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    value: Bb
  additional property: Mode Name
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Pavane - Ravel - Lecture Classique
type: MusicRecording
duration: PT3M34S
duration ms: 214598
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
  type: MusicAlbum
  date published: 2022-07-20
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462b9b4ed8922b95910f1890dfb0c9b5836574df70a8903e2f5f7e1bd97d929. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280463.
  date published: 2026-07-31T08:26:41Z
audio: Pavane - Ravel - Lecture Classique
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
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  additional property: Energy
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  additional property: Speechiness
    type: PropertyValue
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
    type: PropertyValue
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  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.238
  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.29
  additional property: Key Name
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  additional property: Mode Name
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isrc code: GBRKQ2280463
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280463
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T08:26:41+00:00
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

Gymnopedies - Satie - Lecture Classique
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duration: PT2M29S
duration ms: 149613
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
  type: MusicAlbum
  date published: 2022-07-20
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca750a04a78ad915520c21df23b4e780a225a970bfab1936afc91e3e7867582. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280464.
  date published: 2026-07-31T12:24:41Z
audio: Gymnopedies - Satie - Lecture Classique
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
    type: PropertyValue
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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  additional property: Mode Name
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isrc code: GBRKQ2280464
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280464
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960397
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41+00:00
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

Moldau - Smentana - Lecture Classique
type: MusicRecording
duration: PT3M0S
duration ms: 180060
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
  type: MusicAlbum
  date published: 2022-07-20
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80cc16d7cb9072e1750247475850380b8979411f0d1340600aa6d8df23ca27. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280465.
  date published: 2026-07-31T13:04:34Z
audio: Moldau - Smentana - Lecture Classique
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  additional property: Musical Key
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
    type: PropertyValue
    value: -34.044
  additional property: Key Name
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    value: Ab
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    type: PropertyValue
    value: Minor
isrc code: GBRKQ2280465
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280465
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960403
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T13:04:34+00:00
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

Für Elise - Beethoven - Lecture Classique
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duration: PT3M28S
duration ms: 208879
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Piano Classique
in album: Musique D'étude Classique : La Musique pour Mieux Apprendre
  type: MusicAlbum
  date published: 2022-07-20
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d6d6a33b0dde3bd4bdf3205019e5ffdc85e39bae5cbafdde436498e5dea1471. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBRKQ2280466.
  date published: 2026-07-31T17:29:52Z
audio: Für Elise - Beethoven - Lecture Classique
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  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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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: OTSVerifyInstructions
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Gnossienne No. 1 - Satie - Lecture Classique
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  date published: 2026-07-31T05:17:02Z
audio: Gnossienne No. 1 - Satie - Lecture Classique
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Meditation From Thais - Massenet - Lecture Classique
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  date published: 2026-07-31T18:48:12Z
audio: Meditation From Thais - Massenet - Lecture Classique
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additional property: OTSVerifyInstructions
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Deux Arabesques - Debussy - Lecture Classique
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-31T19:53:57Z
audio: Deux Arabesques - Debussy - Lecture Classique
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Four Seasons - Vivaldi - Lecture Classique
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  date published: 2026-07-31T21:25:57Z
audio: Four Seasons - Vivaldi - Lecture Classique
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additional property: OTSVerifyInstructions
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Ave Maria - Schubert - Lecture Classique
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  date published: 2026-07-31T17:29:52Z
audio: Ave Maria - Schubert - Lecture Classique
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Pavane - Ravel - Musique D'étude Classique pour Guitare
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  date published: 2026-07-08T03:53:27Z
audio: Pavane - Ravel - Musique D'étude Classique pour Guitare
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Clair De Lune - Debussy - Musique D'étude Classique pour Guitare
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  date published: 2026-07-31T12:24:41Z
audio: Clair De Lune - Debussy - Musique D'étude Classique pour Guitare
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  additional property: Tempo (BPM)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    type: PropertyValue
    value: Major
isrc code: QZTRX2125748
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
  type: PropertyValue
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additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125748
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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  value: https://blockstream.info/api/block-height/960397
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T12:24:41+00:00
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

Gymnopedies - Satie - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT2M26S
duration ms: 146933
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495e5eb72a17a194f63125e4764766670d7fc4db168e3e462e82d86558580cb1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125749.
  date published: 2026-07-31T02:19:15Z
audio: Gymnopedies - Satie - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
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  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
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    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.478
  additional property: Energy
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    value: 0.021
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.984
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.916
  additional property: Liveness
    type: PropertyValue
    value: 0.298
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.062
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.937
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: QZTRX2125749
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
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additional property: BitcoinTime
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  value: 2026-07-31T02:19:15+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125749
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960334
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960334
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T02:19:15+00:00
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

Moldau - Smetana - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT2M57S
duration ms: 177252
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4595944fdeba93883239e9c83e3c81878d0ddea28e0eec84d047be9b3432524. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125750.
  date published: 2026-08-01T02:22:04Z
audio: Moldau - Smetana - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 131.608
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.722
  additional property: Energy
    type: PropertyValue
    value: 0.043
  additional property: Speechiness
    type: PropertyValue
    value: 0.038
  additional property: Acousticness
    type: PropertyValue
    value: 0.962
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.832
  additional property: Liveness
    type: PropertyValue
    value: 0.168
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.08
  additional property: Loudness (dB)
    type: PropertyValue
    value: -27.782
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: QZTRX2125750
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
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additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960497
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-08-01T02:22:04+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125750
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960497
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960497
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-08-01T02:22:04+00:00
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

Für Elise - Beethoven - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT3M25S
duration ms: 205500
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3803175f75c5dacecc4c29fc365a60d080af266d3341166e744330ae2201b435. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125753.
  date published: 2026-07-31T23:30:38Z
audio: Für Elise - Beethoven - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 158.81
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 0
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.579
  additional property: Energy
    type: PropertyValue
    value: 0.081
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.924
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.928
  additional property: Liveness
    type: PropertyValue
    value: 0.106
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.16
  additional property: Loudness (dB)
    type: PropertyValue
    value: -30.158
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: QZTRX2125753
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960478
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T23:30:38+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125753
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960478
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T23:30:38+00:00
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

Canon in D - Pachelbel - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT4M38S
duration ms: 278509
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e3208310bb5e61aa701841e53939547bfe45b79360d2e3c6bc7b1f45da77e2. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125756.
  date published: 2026-07-31T10:20:10Z
audio: Canon in D - Pachelbel - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 117.999
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.539
  additional property: Energy
    type: PropertyValue
    value: 0.027
  additional property: Speechiness
    type: PropertyValue
    value: 0.034
  additional property: Acousticness
    type: PropertyValue
    value: 0.982
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.941
  additional property: Liveness
    type: PropertyValue
    value: 0.08
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.144
  additional property: Loudness (dB)
    type: PropertyValue
    value: -32.831
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: QZTRX2125756
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960389
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T10:20:10+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125756
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960389
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960389
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T10:20:10+00:00
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

Spring The Four Seasons - Vivaldi - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT2M34S
duration ms: 154909
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b2fb32f30165ada54c92503ad61b17e16219336a9881daab4fac84e0166341. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125759.
  date published: 2026-07-31T17:29:52Z
audio: Spring The Four Seasons - Vivaldi - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 124.79
  additional property: Musical Key
    type: PropertyValue
    value: 2
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.625
  additional property: Energy
    type: PropertyValue
    value: 0.025
  additional property: Speechiness
    type: PropertyValue
    value: 0.036
  additional property: Acousticness
    type: PropertyValue
    value: 0.986
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.713
  additional property: Liveness
    type: PropertyValue
    value: 0.066
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.05
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.742
  additional property: Key Name
    type: PropertyValue
    value: D
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: QZTRX2125759
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960441
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T17:29:52+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125759
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960441
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960441
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-31T17:29:52+00:00
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

Pathetique - Beethoven - Musique D'étude Classique pour Guitare
type: MusicRecording
duration: PT3M5S
duration ms: 185142
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60644d9fd88f64fbf75004436f8f6d7a022fb2e368a0e6a34ea5cfb2d67787e1. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125760.
  date published: 2026-07-31T19:53:13Z
audio: Pathetique - Beethoven - Musique D'étude Classique pour Guitare
  type: AudioObject
  additional property: Tempo (BPM)
    type: PropertyValue
    value: 145.181
  additional property: Musical Key
    type: PropertyValue
    value: 9
  additional property: Mode (Major/Minor)
    type: PropertyValue
    value: 1
  additional property: Time Signature
    type: PropertyValue
    value: 5
  additional property: Danceability
    type: PropertyValue
    value: 0.534
  additional property: Energy
    type: PropertyValue
    value: 0.028
  additional property: Speechiness
    type: PropertyValue
    value: 0.032
  additional property: Acousticness
    type: PropertyValue
    value: 0.963
  additional property: Instrumentalness
    type: PropertyValue
    value: 0.935
  additional property: Liveness
    type: PropertyValue
    value: 0.328
  additional property: Valence (Positivity)
    type: PropertyValue
    value: 0.107
  additional property: Loudness (dB)
    type: PropertyValue
    value: -33.486
  additional property: Key Name
    type: PropertyValue
    value: A
  additional property: Mode Name
    type: PropertyValue
    value: Major
isrc code: QZTRX2125760
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
  type: PropertyValue
  value: verified-cc-db-prod
additional property: TokenDeploymentConfirmed
  type: PropertyValue
  value: true
additional property: ContentHash
additional property: BitcoinBlock
  type: PropertyValue
  value: 960455
additional property: BitcoinTime
  type: PropertyValue
  value: 2026-07-31T19:53:13+00:00
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125760
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 960455
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/960455
additional property: OTSTimestamp
  type: PropertyValue
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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

La Fille Aux Cheveux De Lin - Debussy - Musique D'étude Classique pour Guitare
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duration: PT3M4S
duration ms: 184500
explicit: false
by artist: Musique Classique
by artist: Musique Classique Relaxante pour Étudier
by artist: Guitare Classique
in album: Étude Classique : Musique Classique pour L'apprentissage
  type: MusicAlbum
  date published: 2022-01-06
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2a500ea14c5fbad1193964abad91689d824909265444812677e1506f7e5fc7. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTRX2125767.
  date published: 2026-07-31T20:22:46Z
audio: La Fille Aux Cheveux De Lin - Debussy - Musique D'étude Classique pour Guitare
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  additional property: Tempo (BPM)
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  additional property: Mode (Major/Minor)
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  additional property: Time Signature
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  additional property: Danceability
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  additional property: Energy
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  additional property: Speechiness
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Loudness (dB)
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    value: -31.698
  additional property: Key Name
    type: PropertyValue
    value: Eb
  additional property: Mode Name
    type: PropertyValue
    value: Minor
isrc code: QZTRX2125767
additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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additional property: OTSVerificationAPI
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additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
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additional property: OTSTimestamp
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  value: 2026-07-31T20:22:46+00:00
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