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genre: chamber music
popularity: 2
followers: 7
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  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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track: Sonata No. 1 for 3 Cellos in A Minor: II. Allegro - Minuetto I. Comodo
track: Sonata No. 1 for 3 Cellos in A Minor: III. Minuetto II. Allegro
track: Sonata No. 6 for 3 Cellos in C Major: I. Adagio
track: Sonata No. 1 for 3 Cellos in A Minor: I. Adagio

Sonata No. 1 for 3 Cellos in A Minor: II. Allegro - Minuetto I. Comodo
type: MusicRecording
duration: PT2M59S
duration ms: 179613
explicit: false
by artist: Giacobbe Basevi Cervetto
by artist: Martin Zeller
by artist: Marco Frezzato
by artist: Roberto Bevilacqua
by artist: Stefano Demicheli
in album: Cervetto: 6 Sonatas for 3 Violoncellos
  type: MusicAlbum
  date published: 2018-11-02
isrc code: ITD920501101
additional property: CopyrightID
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Sonata No. 1 for 3 Cellos in A Minor: II. Allegro - Minuetto I. Comodo
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Sonata No. 1 for 3 Cellos in A Minor: III. Minuetto II. Allegro
type: MusicRecording
duration: PT3M39S
duration ms: 219733
explicit: false
by artist: Giacobbe Basevi Cervetto
by artist: Martin Zeller
by artist: Marco Frezzato
by artist: Roberto Bevilacqua
by artist: Stefano Demicheli
in album: Cervetto: 6 Sonatas for 3 Violoncellos
  type: MusicAlbum
  date published: 2018-11-02
isrc code: ITD920501102
additional property: CopyrightID
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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
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:20:19Z
audio: Sonata No. 1 for 3 Cellos in A Minor: III. Minuetto II. Allegro
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Sonata No. 6 for 3 Cellos in C Major: I. Adagio
type: MusicRecording
duration: PT3M14S
duration ms: 194173
explicit: false
by artist: Giacobbe Basevi Cervetto
by artist: Martin Zeller
by artist: Marco Frezzato
by artist: Roberto Bevilacqua
in album: Cervetto: 6 Sonatas for 3 Violoncellos
  type: MusicAlbum
  date published: 2018-11-02
isrc code: ITD920501115
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T08:56:20Z
audio: Sonata No. 6 for 3 Cellos in C Major: I. Adagio
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Sonata No. 1 for 3 Cellos in A Minor: I. Adagio
type: MusicRecording
duration: PT2M37S
duration ms: 157920
explicit: false
by artist: Giacobbe Basevi Cervetto
by artist: Martin Zeller
by artist: Marco Frezzato
by artist: Roberto Bevilacqua
by artist: Stefano Demicheli
in album: Cervetto: 6 Sonatas for 3 Violoncellos
  type: MusicAlbum
  date published: 2018-11-02
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b0806fff5a970a2cde6507964fcf85a3fdde4205b5d3058d9e96617657a1f6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITD920501100.
  date published: 2026-07-30T10:42:33Z
audio: Sonata No. 1 for 3 Cellos in A Minor: I. Adagio
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additional property: CopyrightID
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additional property: OTSBitcoinBlockVerifyURL
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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