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type: MusicGroup
genre: chamber music
popularity: 5
followers: 9
additional property: CopyrightID
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: OTSVerifyInstructions
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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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  date published: 2026-06-19T03:22:39Z
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track: String Quintet in E Major, Op. 1: I. Allegro con brio
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  by artist: Ethel Smyth
  by artist: Joachim Griesheimer
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
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    date published: 2000-01-01
  genre: british-modern-classical
  genre: victorian-britain
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2c1b5cbeffb81737a9082921a8864857d2f07b28deeb23e69077606918c98c. 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/DEB209635205.
    date published: 2026-07-08T03:20:19Z
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    additional property: Valence (Positivity)
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    additional property: Loudness (dB)
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track: String Quintet in E Major, Op. 1: II. Andantino poco allegretto
track: String Quintet in E Major, Op. 1: V. Allegro molto
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  by artist: Joachim Griesheimer
  by artist: Mannheim String Quartet
  in album: Smyth: String Quartet - String Quintet
    type: MusicAlbum
    date published: 2000-01-01
  genre: british-modern-classical
  genre: victorian-britain
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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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544334244008aae933287998df1406f1d89d25fa43f8fabe57cc66b8f62fe3fa. 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/DEB209635209.
    date published: 2026-07-08T03:22:41Z
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    additional property: Valence (Positivity)
    additional property: Loudness (dB)
    additional property: Key Name
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String Quintet in E Major, Op. 1: II. Andantino poco allegretto
type: MusicRecording
duration: PT2M13S
duration ms: 133640
explicit: false
by artist: Ethel Smyth
by artist: Joachim Griesheimer
by artist: Mannheim String Quartet
in album: Smyth: String Quartet - String Quintet
  type: MusicAlbum
  date published: 2000-01-01
genre: british-modern-classical
genre: victorian-britain
isrc code: DEB209635206
additional property: CopyrightID
additional property: CopyrightStatus
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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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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB209635206
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-07-02T05:09:12Z
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
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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 0x45be7718d311c6d24cf4d48d9355cc2cdb191cd918762dd52404522638cc2589. 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/DEB209635206.
  date published: 2026-07-02T05:09:12Z
audio: String Quintet in E Major, Op. 1: II. Andantino poco allegretto
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  additional property: Key Name
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  additional property: Mode Name
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Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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Mode Name
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