David Rabinovich
type: MusicGroup
genre: chamber music
popularity: 2
followers: 42
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSBitcoinBlock
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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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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f953ccab04cd8c0dc123e55967b9be3d4cb010cb91b46d969e7c77a205275a9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/424ea0b3-0509-4282-8e03-332ccdefdeaa.json and https://artists.proofprofile.net/proofs/artist/424ea0b3-0509-4282-8e03-332ccdefdeaa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
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album: Bach: Musikales Opfer, BWV 1079
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  date published: 2008-12-30
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    by artist: Johann Sebastian Bach
    by artist: Ton Koopman
    by artist: Amsterdam Baroque Orchestra
    in album: Bach: Musikales Opfer, BWV 1079
      type: MusicAlbum
      date published: 2008-12-30
    popularity: 1
    genre: classical
    genre: classical-piano
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    additional property: OTSVerificationAPI
      type: PropertyValue
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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
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      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cbe878049601a9c61e49927a47ee4b5cf0790f1b6604ef0b68728185875d9e. 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/NLK170800063.
      date published: 2026-07-08T08:56:20Z
    audio: Thematis Regii Elaborationes Canonicae - Musikales Opfer, BWV 1079: Canon a 2 per Augmentationem, contrario Motu
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      additional property: Valence (Positivity)
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  track: Ricercar a 6 - Musikales Opfer, BWV 1079
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    by artist: Ton Koopman
    by artist: Amsterdam Baroque Orchestra
    in album: Bach: Musikales Opfer, BWV 1079
      type: MusicAlbum
      date published: 2008-12-30
    popularity: 2
    genre: classical
    genre: classical-piano
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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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfbc486c7c32f973e67bf1bdac9016723bd57425bb402a3aa0d75011ba6efcc. 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/NLK170800074.
      date published: 2026-07-08T03:22:41Z
    audio: Ricercar a 6 - Musikales Opfer, BWV 1079
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Instrumentalness
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value: 0.055

Liveness
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Valence (Positivity)
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Loudness (dB)
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Key Name
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value: B

Mode Name
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value: Minor

Ricercar a 6 - Musikales Opfer, BWV 1079
type: MusicRecording
duration: PT5M53S
duration ms: 353533
explicit: false
by artist: Johann Sebastian Bach
by artist: Ton Koopman
by artist: Amsterdam Baroque Orchestra
in album: Bach: Musikales Opfer, BWV 1079
  type: MusicAlbum
  date published: 2008-12-30
popularity: 1
genre: classical
genre: classical-piano
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additional property: CopyrightStatus
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additional property: CopyrightRegisteredAt
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additional property: OTSHash
additional property: OTSBitcoinBlock
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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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5824d9ae17cb0a97bb52ac7049c896e6c9dd8d20a5df5642d4efeea3ecf310e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLK170800075.
  date published: 2026-07-08T03:39:04Z
audio: Ricercar a 6 - Musikales Opfer, BWV 1079
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