Marcel Fabregat
type: MusicGroup
genre: neoclassical
popularity: 11
followers: 166
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9395a2bf69ca19c6934b7171118c5c9b72c8f8fd232322eae7abd274ad99a4d3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953727
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953727
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/92a8dd9e-cf5b-4698-ac7b-fd6ad213101d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/92a8dd9e-cf5b-4698-ac7b-fd6ad213101d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/92a8dd9e-cf5b-4698-ac7b-fd6ad213101d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:33:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9395a2bf69ca19c6934b7171118c5c9b72c8f8fd232322eae7abd274ad99a4d3","name":"Marcel Fabregat","registered_at":"2026-06-14T19:53:47Z","symbol":"NIM0559206","token_address":"0xa2048743e0be4fa75589076c6835f67ae9b3c6cc","type":"artist","uuid":"92a8dd9e-cf5b-4698-ac7b-fd6ad213101d"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9395a2bf69ca19c6934b7171118c5c9b72c8f8fd232322eae7abd274ad99a4d3. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92a8dd9e-cf5b-4698-ac7b-fd6ad213101d.json and https://artists.proofprofile.net/proofs/artist/92a8dd9e-cf5b-4698-ac7b-fd6ad213101d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-15T02:33:01Z
  text: {"copyright_id":"0x9395a2bf69ca19c6934b7171118c5c9b72c8f8fd232322eae7abd274ad99a4d3","name":"Marcel Fabregat","registered_at":"2026-06-14T19:53:47Z","symbol":"NIM0559206","token_address":"0xa2048743e0be4fa75589076c6835f67ae9b3c6cc","type":"artist","uuid":"92a8dd9e-cf5b-4698-ac7b-fd6ad213101d"}
album: Sonder
  type: MusicAlbum
  date published: 2022-04-11
album: Alazia
  type: MusicAlbum
  date published: 2022-04-26
album: Opia
  type: MusicAlbum
  date published: 2022-05-02
  track: Wytai
    type: MusicRecording
    duration: PT2M49S
    duration ms: 169508
    explicit: false
    by artist: Marcel Fabregat
    in album: Opia
      type: MusicAlbum
      date published: 2022-05-02
    genre: neoclassical
    isrc code: ESA012238907
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-18T18:57:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x07f8860e3d98177885354af170dfeaf991c9e09afda8ab4c5208af72c1aff451
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958600
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958600
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012238907
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-18T19:24:05Z
    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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f8860e3d98177885354af170dfeaf991c9e09afda8ab4c5208af72c1aff451. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ESA012238907 — a six-check JSON result.
      date published: 2026-07-18T19:24:05Z
    audio: Wytai
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 65.346
      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: 0.088
      additional property: Energy
        type: PropertyValue
        value: 0.007
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.983
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.93
      additional property: Liveness
        type: PropertyValue
        value: 0.067
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.039
      additional property: Loudness (dB)
        type: PropertyValue
        value: -30.981
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 20200427
  type: MusicAlbum
  date published: 2024-01-23