Cuatro Púrpura
type: MusicGroup
popularity: 9
followers: 1279
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd3fa5bdd0d2efede9bb05c142c30e59af59827348ef099dfd881514ecbd8ad97
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953895
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953895
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e182663-e4a7-4ca4-add0-e01c3ad7183c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0e182663-e4a7-4ca4-add0-e01c3ad7183c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0e182663-e4a7-4ca4-add0-e01c3ad7183c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:46:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd3fa5bdd0d2efede9bb05c142c30e59af59827348ef099dfd881514ecbd8ad97","name":"Cuatro Púrpura","registered_at":"2026-06-15T18:40:28Z","symbol":"NIM0797142","token_address":"0x7fdfebfbd6419d9f3ca7abd5f5b9e51380f20a06","type":"artist","uuid":"0e182663-e4a7-4ca4-add0-e01c3ad7183c"}
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 0xd3fa5bdd0d2efede9bb05c142c30e59af59827348ef099dfd881514ecbd8ad97. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e182663-e4a7-4ca4-add0-e01c3ad7183c.json and https://artists.proofprofile.net/proofs/artist/0e182663-e4a7-4ca4-add0-e01c3ad7183c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0xd3fa5bdd0d2efede9bb05c142c30e59af59827348ef099dfd881514ecbd8ad97","name":"Cuatro Púrpura","registered_at":"2026-06-15T18:40:28Z","symbol":"NIM0797142","token_address":"0x7fdfebfbd6419d9f3ca7abd5f5b9e51380f20a06","type":"artist","uuid":"0e182663-e4a7-4ca4-add0-e01c3ad7183c"}
album: Existencial (Edición Especial 15° Aniversario)
  type: MusicAlbum
  date published: 2000
album: Existencial (Edición Especial 15° Aniversario)
  type: MusicAlbum
  date published: 2015-05-26
  track: Dame Vida
    type: MusicRecording
    duration: PT4M9S
    duration ms: 249173
    explicit: false
    by artist: Cuatro Púrpura
    in album: Existencial (Edición Especial 15° Aniversario)
      type: MusicAlbum
      date published: 2015-05-26
    isrc code: FR26V1530309
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T18:52:31+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x2a7dc470ae7120cb7862935862dcdc8fdd4483f24b924898cbe793afb3e0c212
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958196
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958196
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V1530309
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T20:38:50Z
    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 0x2a7dc470ae7120cb7862935862dcdc8fdd4483f24b924898cbe793afb3e0c212. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FR26V1530309.
      date published: 2026-07-15T20:38:50Z
    audio: Dame Vida
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 115.042
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.648
      additional property: Energy
        type: PropertyValue
        value: 0.672
      additional property: Speechiness
        type: PropertyValue
        value: 0.027
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.002
      additional property: Liveness
        type: PropertyValue
        value: 0.205
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.386
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.748
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major