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followers: 22
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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: Oboe Concerto in C Major, K. 314: I. Allegro aperto
track: Oboe Concerto in C Major, K. 314: II. Adagio non troppo
track: Oboe Concerto in C Major, K. 314: III. Rondò. Allegretto

Oboe Concerto in C Major, K. 314: I. Allegro aperto
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duration ms: 432000
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by artist: Wolfgang Amadeus Mozart
by artist: Orquesta Reino de Aragón
by artist: Ricardo Casero
by artist: Mariano Esteban
in album: Mozart: Oboe Concerto in C Major, K. 314
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  date published: 2022-05-20
genre: classical
genre: classical-era
isrc code: ITD542200401
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additional property: OTSTimestamp
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  value: 2026-06-13T13:32:09+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
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Oboe Concerto in C Major, K. 314: I. Allegro aperto
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Oboe Concerto in C Major, K. 314: II. Adagio non troppo
type: MusicRecording
duration: PT6M55S
duration ms: 415500
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orquesta Reino de Aragón
by artist: Ricardo Casero
by artist: Mariano Esteban
in album: Mozart: Oboe Concerto in C Major, K. 314
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  date published: 2022-05-20
genre: classical
genre: classical-era
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additional property: OTSVerifyInstructions
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Oboe Concerto in C Major, K. 314: II. Adagio non troppo
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Oboe Concerto in C Major, K. 314: III. Rondò. Allegretto
type: MusicRecording
duration: PT5M28S
duration ms: 328000
explicit: false
by artist: Wolfgang Amadeus Mozart
by artist: Orquesta Reino de Aragón
by artist: Ricardo Casero
by artist: Mariano Esteban
in album: Mozart: Oboe Concerto in C Major, K. 314
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  date published: 2022-05-20
genre: classical
genre: classical-era
isrc code: ITD542200403
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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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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-13T15:41:10Z
audio: Oboe Concerto in C Major, K. 314: III. Rondò. Allegretto
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