Els Cecs d'Esterri
type: MusicGroup
popularity: 6
followers: 1668
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x645431346f7a883337f8889eca2d40363cd0ff76e383959528d8a63b7e411405
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954587
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954587
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8de1f32-caa3-408e-b1b3-861e24d608a9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b8de1f32-caa3-408e-b1b3-861e24d608a9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/b8de1f32-caa3-408e-b1b3-861e24d608a9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T19:10:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x645431346f7a883337f8889eca2d40363cd0ff76e383959528d8a63b7e411405","name":"Els Cecs d'Esterri","registered_at":"2026-06-20T16:00:08Z","symbol":"NIM1648740","token_address":"0x4df9f6818393395212313533fcf463fc8f5e3022","type":"artist","uuid":"b8de1f32-caa3-408e-b1b3-861e24d608a9"}
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 0x645431346f7a883337f8889eca2d40363cd0ff76e383959528d8a63b7e411405. Chain 2 (Bitcoin): anchored in block 954588 (2026-06-20T19:15:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8de1f32-caa3-408e-b1b3-861e24d608a9.json and https://artists.proofprofile.net/proofs/artist/b8de1f32-caa3-408e-b1b3-861e24d608a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T19:15:05Z
  text: {"copyright_id":"0x645431346f7a883337f8889eca2d40363cd0ff76e383959528d8a63b7e411405","name":"Els Cecs d'Esterri","registered_at":"2026-06-20T16:00:08Z","symbol":"NIM1648740","token_address":"0x4df9f6818393395212313533fcf463fc8f5e3022","type":"artist","uuid":"b8de1f32-caa3-408e-b1b3-861e24d608a9"}
album: Gran Nord
  type: MusicAlbum
  date published: 2012
album: Gran Nord
  type: MusicAlbum
  date published: 2012-05-04
  track: Volare
    type: MusicRecording
    duration: PT4M1S
    duration ms: 241466
    explicit: false
    by artist: Els Cecs d'Esterri
    in album: Gran Nord
      type: MusicAlbum
      date published: 2012-05-04
    isrc code: ES5951204011
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T19:21:06+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd5834a1648204780f2e4e87ea0fe9a94faf06aef064ab26378abf3228c53d813
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956728
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956728
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5951204011
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:43:49Z
    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 0xd5834a1648204780f2e4e87ea0fe9a94faf06aef064ab26378abf3228c53d813. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5951204011.
      date published: 2026-07-05T01:43:49Z
    audio: Volare
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 123.967
      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: 0.765
      additional property: Energy
        type: PropertyValue
        value: 0.422
      additional property: Speechiness
        type: PropertyValue
        value: 0.038
      additional property: Acousticness
        type: PropertyValue
        value: 0.032
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.122
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.915
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.066
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Gran Nord
  type: MusicAlbum
  date published: 2012-05-04
album: Gran Nord
  type: MusicAlbum
  date published: 2012-05-04
album: Gran Nord (Vol. 2)
  type: MusicAlbum
  date published: 2013-05-06
album: Gran nord, Vol. 2
  type: MusicAlbum
  date published: 2013-05-06
album: Gran Nord (Vol. 2)
  type: MusicAlbum
  date published: 2013-05-06
album: Gran Nord (Vol. 2)
  type: MusicAlbum
  date published: 2014-02-07