J Marrufo
type: MusicGroup
genre: flamenco
genre: flamenco pop
genre: flamenco urbano
popularity: 18
followers: 353
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x6870e55a32e74d3c1228d59cd4607316514ef1cd791653b85f0139a5be6483fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7d11910-5cec-4588-83e2-44fdc27a01fd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f7d11910-5cec-4588-83e2-44fdc27a01fd.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f7d11910-5cec-4588-83e2-44fdc27a01fd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x6870e55a32e74d3c1228d59cd4607316514ef1cd791653b85f0139a5be6483fc","name":"J Marrufo","registered_at":"2026-06-15T06:34:27Z","symbol":"NIM0712188","token_address":"0xf2af27c5640bb442d93588e17e308e5205c7989a","type":"artist","uuid":"f7d11910-5cec-4588-83e2-44fdc27a01fd"}
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 0x6870e55a32e74d3c1228d59cd4607316514ef1cd791653b85f0139a5be6483fc. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7d11910-5cec-4588-83e2-44fdc27a01fd.json and https://artists.proofprofile.net/proofs/artist/f7d11910-5cec-4588-83e2-44fdc27a01fd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T18:10:31Z
  text: {"copyright_id":"0x6870e55a32e74d3c1228d59cd4607316514ef1cd791653b85f0139a5be6483fc","name":"J Marrufo","registered_at":"2026-06-15T06:34:27Z","symbol":"NIM0712188","token_address":"0xf2af27c5640bb442d93588e17e308e5205c7989a","type":"artist","uuid":"f7d11910-5cec-4588-83e2-44fdc27a01fd"}
album: Vuela
  type: MusicAlbum
  date published: 2020-09-18
album: Me Llama
  type: MusicAlbum
  date published: 2020-12-17
album: Vente Conmigo
  type: MusicAlbum
  date published: 2021-09-30
album: Beber y Bailar
  type: MusicAlbum
  date published: 2022-03-17
album: Con los Míos
  type: MusicAlbum
  date published: 2022-09-01
album: Contra El Mundo
  type: MusicAlbum
  date published: 2023-08-25
album: Te Arrepentiste
  type: MusicAlbum
  date published: 2024-02-14
album: Tussi
  type: MusicAlbum
  date published: 2024-08-23
album: Tussi
  type: MusicAlbum
  date published: 2024-08-23
track: Sentimientos
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235197
  explicit: false
  by artist: La Cebolla
  by artist: Negro Jari
  by artist: Sergio Contreras
  by artist: J Marrufo
  in album: Flow de los Suburbios
    type: MusicAlbum
    date published: 2023-03-01
  genre: flamenco-urbano
  genre: flamenco
  genre: reggaeton-chileno
  genre: flamenco-pop
  isrc code: US7VG2345811
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T01:19:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 956302
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/956302
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2345811
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US7VG2345811.
    date published: 2026-07-02T03:30:09Z
  audio: Sentimientos
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 117.928
    additional property: Musical Key
      type: PropertyValue
      value: 2
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.8
    additional property: Energy
      type: PropertyValue
      value: 0.781
    additional property: Speechiness
      type: PropertyValue
      value: 0.419
    additional property: Acousticness
      type: PropertyValue
      value: 0.337
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.089
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.853
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.274
    additional property: Key Name
      type: PropertyValue
      value: D
    additional property: Mode Name
      type: PropertyValue
      value: Minor
track: Sentimientos
  type: MusicRecording
  duration: PT3M55S
  duration ms: 235197
  explicit: false
  by artist: Negro Jari
  by artist: La Cebolla
  by artist: Sergio Contreras
  by artist: J Marrufo
  in album: Sentimientos
    type: MusicAlbum
    date published: 2023-02-01
  isrc code: US7VG2345811
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-06-07T01:19:14+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 953515
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/953515
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG2345811
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-06-13T12:53:06Z
  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 0xf013b1f706ef01594a22cdbee5c2e25ef48a0f47e9892cb99f6b2350c2d14ca0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US7VG2345811.
    date published: 2026-06-13T12:53:06Z
  audio: Sentimientos

Sentimientos
type: AudioObject
additional property: Tempo (BPM)
  type: PropertyValue
  value: 117.928
additional property: Musical Key
  type: PropertyValue
  value: 2
additional property: Mode (Major/Minor)
  type: PropertyValue
  value: 0
additional property: Time Signature
  type: PropertyValue
  value: 5
additional property: Danceability
  type: PropertyValue
  value: 0.8
additional property: Energy
  type: PropertyValue
  value: 0.781
additional property: Speechiness
  type: PropertyValue
  value: 0.419
additional property: Acousticness
  type: PropertyValue
  value: 0.337
additional property: Instrumentalness
  type: PropertyValue
  value: 0
additional property: Liveness
  type: PropertyValue
  value: 0.089
additional property: Valence (Positivity)
  type: PropertyValue
  value: 0.853
additional property: Loudness (dB)
  type: PropertyValue
  value: -11.274
additional property: Key Name
  type: PropertyValue
  value: D
additional property: Mode Name
  type: PropertyValue
  value: Minor