Los Graduados
type: MusicGroup
genre: salsa
genre: tropical music
popularity: 2
followers: 66
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x91c1f9d7e9f90419a74992b3a9d296468d6e870cf7fe7a9c7bc66f381da6cdcd
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/907cf3cd-9aaa-479d-87bc-779388d2bf44.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/907cf3cd-9aaa-479d-87bc-779388d2bf44.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/907cf3cd-9aaa-479d-87bc-779388d2bf44
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x91c1f9d7e9f90419a74992b3a9d296468d6e870cf7fe7a9c7bc66f381da6cdcd","name":"Los Graduados","registered_at":"2026-06-17T15:49:44Z","symbol":"NIM1443539","token_address":"0xb6de3c18a664efea29ec1ae7a968fbe7e20cf265","type":"artist","uuid":"907cf3cd-9aaa-479d-87bc-779388d2bf44"}
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 0x91c1f9d7e9f90419a74992b3a9d296468d6e870cf7fe7a9c7bc66f381da6cdcd. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/907cf3cd-9aaa-479d-87bc-779388d2bf44.json and https://artists.proofprofile.net/proofs/artist/907cf3cd-9aaa-479d-87bc-779388d2bf44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x91c1f9d7e9f90419a74992b3a9d296468d6e870cf7fe7a9c7bc66f381da6cdcd","name":"Los Graduados","registered_at":"2026-06-17T15:49:44Z","symbol":"NIM1443539","token_address":"0xb6de3c18a664efea29ec1ae7a968fbe7e20cf265","type":"artist","uuid":"907cf3cd-9aaa-479d-87bc-779388d2bf44"}
album: 79
  type: MusicAlbum
  date published: 1978-02-10
album: 79
  type: MusicAlbum
  date published: 1978-10-02
  track: El Profesor
    type: MusicRecording
    duration: PT3M44S
    duration ms: 224000
    explicit: false
    by artist: Los Graduados
    in album: 79
      type: MusicAlbum
      date published: 1978-10-02
    genre: salsa
    genre: tropical music
    isrc code: QZNJV2352565
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T16:14:42+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2ef264e6e22540dbd49d6251d94263f83a15e58a4f19482178b0043c5bdfe16f
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958576
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958576
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNJV2352565
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T16:22:28Z
    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 0x2ef264e6e22540dbd49d6251d94263f83a15e58a4f19482178b0043c5bdfe16f. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZNJV2352565.
      date published: 2026-07-18T16:22:28Z
    audio: El Profesor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 105.007
      additional property: Musical Key
        type: PropertyValue
        value: 10
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.662
      additional property: Energy
        type: PropertyValue
        value: 0.647
      additional property: Speechiness
        type: PropertyValue
        value: 0.086
      additional property: Acousticness
        type: PropertyValue
        value: 0.824
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.167
      additional property: Liveness
        type: PropertyValue
        value: 0.078
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.961
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.491
      additional property: Key Name
        type: PropertyValue
        value: Bb
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: 80
  type: MusicAlbum
  date published: 1979-05-30