Mercedes Luján
type: MusicGroup
genre: flamenco
popularity: 13
followers: 1655
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6fabf0a9c95267655e5349426020eb5cb88116239a9d691ed4534a4ddbea8f22
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953636
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953636
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/35cb89e1-0c01-43d0-b230-67c6066ed40a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/35cb89e1-0c01-43d0-b230-67c6066ed40a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/35cb89e1-0c01-43d0-b230-67c6066ed40a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T13:03:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6fabf0a9c95267655e5349426020eb5cb88116239a9d691ed4534a4ddbea8f22","name":"Mercedes Luján","registered_at":"2026-06-14T10:06:24Z","symbol":"NIM0419123","token_address":"0x61633e7c06af8117e87a2a69b12cc5ed9b64984b","type":"artist","uuid":"35cb89e1-0c01-43d0-b230-67c6066ed40a"}
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 0x6fabf0a9c95267655e5349426020eb5cb88116239a9d691ed4534a4ddbea8f22. Chain 2 (Bitcoin): anchored in block 953636 (2026-06-14T13:03:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35cb89e1-0c01-43d0-b230-67c6066ed40a.json and https://artists.proofprofile.net/proofs/artist/35cb89e1-0c01-43d0-b230-67c6066ed40a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T13:03:42Z
  text: {"copyright_id":"0x6fabf0a9c95267655e5349426020eb5cb88116239a9d691ed4534a4ddbea8f22","name":"Mercedes Luján","registered_at":"2026-06-14T10:06:24Z","symbol":"NIM0419123","token_address":"0x61633e7c06af8117e87a2a69b12cc5ed9b64984b","type":"artist","uuid":"35cb89e1-0c01-43d0-b230-67c6066ed40a"}
album: Ahora o Nunca
  type: MusicAlbum
  date published: 2021-03-05
album: Ahora o Nunca (Live in Solera Flamenca)
  type: MusicAlbum
  date published: 2022-08-14
album: Primera Luz
  type: MusicAlbum
  date published: 2025-09-19
album: Origen & Revolución
  type: MusicAlbum
  date published: 2025-10-24
  track: D' Huelva - Fandangos
    type: MusicRecording
    duration: PT3M41S
    duration ms: 221786
    explicit: false
    by artist: Mercedes Luján
    in album: Origen & Revolución
      type: MusicAlbum
      date published: 2025-10-24
    genre: flamenco
    isrc code: QMFMF2523019
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T01:36:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x86bc506bc66ef60e541908f6586b1574b5cc010ad5be641a459e48978d1a3340
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957788
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957788
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF2523019
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T02:37:37Z
    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 0x86bc506bc66ef60e541908f6586b1574b5cc010ad5be641a459e48978d1a3340. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QMFMF2523019.
      date published: 2026-07-13T02:37:37Z
    audio: D' Huelva - Fandangos
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 150.037
      additional property: Musical Key
        type: PropertyValue
        value: 9
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.648
      additional property: Energy
        type: PropertyValue
        value: 0.572
      additional property: Speechiness
        type: PropertyValue
        value: 0.031
      additional property: Acousticness
        type: PropertyValue
        value: 0.83
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.023
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.465
      additional property: Loudness (dB)
        type: PropertyValue
        value: -8.91
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Minor