Enso String Quartet
type: MusicGroup
genre: chamber music
genre: classical
popularity: 14
followers: 230
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additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-14T16:43:25Z
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album: Strauss, Puccini & Verdi: Works for String Quartet
  type: MusicAlbum
  date published: 2014-09-02
album: Strauss, Puccini & Verdi: Works for String Quartet
  type: MusicAlbum
  date published: 2014-09-02
album: Strauss, Puccini & Verdi: Works for String Quartet
  type: MusicAlbum
  date published: 2014-09-02
track: String Quartet No. 1, Op. 20: I. Allegro violento ed agitato
track: String Quartet No. 1, Op. 20: II. Vivacissimo
track: String Quartet No. 1, Op. 20: III. Calmo e poetico
track: String Quartet No. 1, Op. 20: IV. Allegramente rustico

String Quartet No. 1, Op. 20: I. Allegro violento ed agitato
type: MusicRecording
duration: PT4M32S
duration ms: 272386
explicit: false
by artist: Alberto Ginastera
by artist: Enso String Quartet
in album: Ginastera: String Quartets Nos. 1-3
  type: MusicAlbum
  date published: 2009-06-30
genre: orchestra
isrc code: HKI190879101
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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: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca4a21e2e72fc990c1511b62a112fb2022b742f3f2d96034fd4a399c49ed8d2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKI190879101.
  date published: 2026-07-02T05:09:12Z
audio: String Quartet No. 1, Op. 20: I. Allegro violento ed agitato
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  additional property: Key Name
    type: PropertyValue
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  additional property: Mode Name
    type: PropertyValue
    value: Major

String Quartet No. 1, Op. 20: II. Vivacissimo
type: MusicRecording
duration: PT3M44S
duration ms: 224466
explicit: false
by artist: Alberto Ginastera
by artist: Enso String Quartet
in album: Ginastera: String Quartets Nos. 1-3
  type: MusicAlbum
  date published: 2009-06-30
genre: orchestra
isrc code: HKI190879102
additional property: CopyrightID
additional property: CopyrightStatus
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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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79985f2416134ee4a7eec183edd2ef13c07504cac478fac3b4df0a49dbaaac1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI190879102.
  date published: 2026-07-08T03:20:19Z
audio: String Quartet No. 1, Op. 20: II. Vivacissimo
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  additional property: Mode Name
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String Quartet No. 1, Op. 20: III. Calmo e poetico
type: MusicRecording
duration: PT8M5S
duration ms: 485973
explicit: false
by artist: Alberto Ginastera
by artist: Enso String Quartet
in album: Ginastera: String Quartets Nos. 1-3
  type: MusicAlbum
  date published: 2009-06-30
genre: orchestra
isrc code: HKI190879103
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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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 0x4200958d5caef3b221c29b5ba4de66e800dd0aad6c54f295884eb0666281ebe0. 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/HKI190879103.
  date published: 2026-07-08T03:22:41Z
audio: String Quartet No. 1, Op. 20: III. Calmo e poetico
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String Quartet No. 1, Op. 20: IV. Allegramente rustico
type: MusicRecording
duration: PT3M54S
duration ms: 234120
explicit: false
by artist: Alberto Ginastera
by artist: Enso String Quartet
in album: Ginastera: String Quartets Nos. 1-3
  type: MusicAlbum
  date published: 2009-06-30
genre: orchestra
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df52071aba4f55d37df499ea8e9d546873dc43b2e2464f093e131ffee996f6. 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/HKI190879104.
  date published: 2026-07-31T08:26:41Z
audio: String Quartet No. 1, Op. 20: IV. Allegramente rustico
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additional property: CopyrightID
additional property: ProofProfileEvidenceStatus
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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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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