Calibre 91
type: MusicGroup
popularity: 9
followers: 895
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x43a316d87b563b11b190a75be7dc4211862867ffe0c970beb2501b64dc80e925
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa4f8a08-8561-4c13-b396-a7f1ca17041e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/aa4f8a08-8561-4c13-b396-a7f1ca17041e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/aa4f8a08-8561-4c13-b396-a7f1ca17041e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x43a316d87b563b11b190a75be7dc4211862867ffe0c970beb2501b64dc80e925","name":"Calibre 91","registered_at":"2026-06-20T09:28:47Z","symbol":"NIM1578748","token_address":"0xe719ab47edcbfa74c133e2cf157d2f095187a5d4","type":"artist","uuid":"aa4f8a08-8561-4c13-b396-a7f1ca17041e"}
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 0x43a316d87b563b11b190a75be7dc4211862867ffe0c970beb2501b64dc80e925. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa4f8a08-8561-4c13-b396-a7f1ca17041e.json and https://artists.proofprofile.net/proofs/artist/aa4f8a08-8561-4c13-b396-a7f1ca17041e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0x43a316d87b563b11b190a75be7dc4211862867ffe0c970beb2501b64dc80e925","name":"Calibre 91","registered_at":"2026-06-20T09:28:47Z","symbol":"NIM1578748","token_address":"0xe719ab47edcbfa74c133e2cf157d2f095187a5d4","type":"artist","uuid":"aa4f8a08-8561-4c13-b396-a7f1ca17041e"}
album: Siempre Me Engaña el Rock'n'roll
  type: MusicAlbum
  date published: 2018-11-05
album: Siempre Me Engaña El Rock'n'roll
  type: MusicAlbum
  date published: 2018-11-05
album: ¿Qué Hace una Chica Como Tú en un Sitio Como Este? (En Directo)
  type: MusicAlbum
  date published: 2020-12-18
album: Me Lo He Pensado Mejor (En Directo)
  type: MusicAlbum
  date published: 2021-02-12
album: La Suma de los Días (En Directo)
  type: MusicAlbum
  date published: 2021-04-09
album: Me Crié en Asfalto (En Directo)
  type: MusicAlbum
  date published: 2021-05-14
album: Whisky Bar (En Directo)
  type: MusicAlbum
  date published: 2021-06-11
album: Al Rojo Vivo
  type: MusicAlbum
  date published: 2021-09-24
album: Tú me acompañarás
  type: MusicAlbum
  date published: 2023-06-02
album: Tú Me Acompañarás
  type: MusicAlbum
  date published: 2023-06-02
album: Gente Normal
  type: MusicAlbum
  date published: 2023-09-08
album: Tu Poder
  type: MusicAlbum
  date published: 2023-10-20
album: Gallo De Corral
  type: MusicAlbum
  date published: 2024-01-12
album: Disimular
  type: MusicAlbum
  date published: 2024-06-14
album: El Vencido
  type: MusicAlbum
  date published: 2025-05-09
  track: El Vencido
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234000
    explicit: false
    by artist: Calibre 91
    in album: El Vencido
      type: MusicAlbum
      date published: 2025-05-09
    isrc code: ES64E2506655
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T08:11:33+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9931e79f131faa38a8922b5c9366a645723441196580577cb9b9553824793405
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956776
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956776
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES64E2506655
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:59:37Z
    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 0x9931e79f131faa38a8922b5c9366a645723441196580577cb9b9553824793405. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES64E2506655.
      date published: 2026-07-05T10:59:37Z
    audio: El Vencido
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 141.896
      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: 0.545
      additional property: Energy
        type: PropertyValue
        value: 0.853
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.006
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.117
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.563
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.909
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Animales
  type: MusicAlbum
  date published: 2025-09-18
album: Tu me acompañarás
  type: MusicAlbum
  date published: 2025-10-17