Sylvia de Grasse
type: MusicGroup
genre: exotica
popularity: 6
followers: 277
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x88766141fb6cd0ff5ef0f6c38a7975e5d26c24a21114d53d02cc03810d347882
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72e91d4a-8510-40e7-bf12-de86a782f7f3.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/72e91d4a-8510-40e7-bf12-de86a782f7f3.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/72e91d4a-8510-40e7-bf12-de86a782f7f3
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x88766141fb6cd0ff5ef0f6c38a7975e5d26c24a21114d53d02cc03810d347882","name":"Sylvia de Grasse","registered_at":"2026-06-17T05:35:22Z","symbol":"NIM1297103","token_address":"0xdaf104d80a455d63f1e8e339e28d93396286da5b","type":"artist","uuid":"72e91d4a-8510-40e7-bf12-de86a782f7f3"}
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
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88766141fb6cd0ff5ef0f6c38a7975e5d26c24a21114d53d02cc03810d347882. 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/72e91d4a-8510-40e7-bf12-de86a782f7f3.json and https://artists.proofprofile.net/proofs/artist/72e91d4a-8510-40e7-bf12-de86a782f7f3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x88766141fb6cd0ff5ef0f6c38a7975e5d26c24a21114d53d02cc03810d347882","name":"Sylvia de Grasse","registered_at":"2026-06-17T05:35:22Z","symbol":"NIM1297103","token_address":"0xdaf104d80a455d63f1e8e339e28d93396286da5b","type":"artist","uuid":"72e91d4a-8510-40e7-bf12-de86a782f7f3"}
album: La Cita
  type: MusicAlbum
  date published: 1960-07-22
album: La Cita
  type: MusicAlbum
  date published: 1960-07-22
  track: La Cita
    type: MusicRecording
    duration: PT2M16S
    duration ms: 136960
    explicit: false
    by artist: Sylvia de Grasse
    in album: La Cita
      type: MusicAlbum
      date published: 1960-07-22
    genre: exotica
    isrc code: QZKVY2001272
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T22:15:15+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x81d97c0958716b5a1e7ba70f01981eb26376197b8bcbcf3e969b49b16044b8c5
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZKVY2001272
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0x81d97c0958716b5a1e7ba70f01981eb26376197b8bcbcf3e969b49b16044b8c5. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZKVY2001272.
      date published: 2026-07-04T10:04:33Z
    audio: La Cita
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 113.246
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.761
      additional property: Energy
        type: PropertyValue
        value: 0.458
      additional property: Speechiness
        type: PropertyValue
        value: 0.102
      additional property: Acousticness
        type: PropertyValue
        value: 0.665
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.088
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.883
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.467
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: In Panama
  type: MusicAlbum
  date published: 1982-01-01
album: Cosa Linda
  type: MusicAlbum
  date published: 2003
album: Los Reyes del Merengue
  type: MusicAlbum
  date published: 2004-08-10
album: Boleros Panameños
  type: MusicAlbum
  date published: 2018-03-16
album: Cosa Linda
  type: MusicAlbum
  date published: 2018-03-19
album: La Morena Tumba Hombres
  type: MusicAlbum
  date published: 2023-08-18