Etiqueta Negra
type: MusicGroup
popularity: 4
followers: 263
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xbb4d806d153c20bad4c5a38d1c1e5bf608ecef0272b9d273af3ef1ff15b34fd3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0694d36-4cc8-45d5-8fb1-52109d2d8cb5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f0694d36-4cc8-45d5-8fb1-52109d2d8cb5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f0694d36-4cc8-45d5-8fb1-52109d2d8cb5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xbb4d806d153c20bad4c5a38d1c1e5bf608ecef0272b9d273af3ef1ff15b34fd3","name":"Etiqueta Negra","registered_at":"2026-06-21T12:33:32Z","symbol":"NIM1924530","token_address":"0x6f3412b2aa0ad9e4a80507d332f702da15438dc7","type":"artist","uuid":"f0694d36-4cc8-45d5-8fb1-52109d2d8cb5"}
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 0xbb4d806d153c20bad4c5a38d1c1e5bf608ecef0272b9d273af3ef1ff15b34fd3. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0694d36-4cc8-45d5-8fb1-52109d2d8cb5.json and https://artists.proofprofile.net/proofs/artist/f0694d36-4cc8-45d5-8fb1-52109d2d8cb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xbb4d806d153c20bad4c5a38d1c1e5bf608ecef0272b9d273af3ef1ff15b34fd3","name":"Etiqueta Negra","registered_at":"2026-06-21T12:33:32Z","symbol":"NIM1924530","token_address":"0x6f3412b2aa0ad9e4a80507d332f702da15438dc7","type":"artist","uuid":"f0694d36-4cc8-45d5-8fb1-52109d2d8cb5"}
album: Sin Palabras
  type: MusicAlbum
  date published: 2020-08-28
album: Sin Palabras
  type: MusicAlbum
  date published: 2020-08-28
  track: Sin Palabras
    type: MusicRecording
    duration: PT5M21S
    duration ms: 321018
    explicit: false
    by artist: Etiqueta Negra
    in album: Sin Palabras
      type: MusicAlbum
      date published: 2020-08-28
    isrc code: TCAFT2125369
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T03:13:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x21ecee073edd74d2184283601b4a0ee750577d70f81e4ab840cfd4c48d28d43a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958650
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958650
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCAFT2125369
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T03:36:41Z
    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 0x21ecee073edd74d2184283601b4a0ee750577d70f81e4ab840cfd4c48d28d43a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCAFT2125369.
      date published: 2026-07-19T03:36:41Z
    audio: Sin Palabras
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 121.164
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.477
      additional property: Energy
        type: PropertyValue
        value: 0.48
      additional property: Speechiness
        type: PropertyValue
        value: 0.081
      additional property: Acousticness
        type: PropertyValue
        value: 0.732
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.11
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.413
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.755
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Sin Palabras
  type: MusicAlbum
  date published: 2020-08-28