Javier Nasceu
type: MusicGroup
genre: mpb
popularity: 7
followers: 153
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1dfe91d6c5839067d9a9d9f26cd9a6e3e18ed8601c52f996345e38c78acc0e56
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e1d2f1a5-0926-49a0-8640-ac6246f7fda8.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e1d2f1a5-0926-49a0-8640-ac6246f7fda8.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e1d2f1a5-0926-49a0-8640-ac6246f7fda8
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1dfe91d6c5839067d9a9d9f26cd9a6e3e18ed8601c52f996345e38c78acc0e56","name":"Javier Nasceu","registered_at":"2026-06-21T06:49:38Z","symbol":"NIM1853075","token_address":"0x4d4134e0aa6e0ad5ec5d486582c601ead3d4a588","type":"artist","uuid":"e1d2f1a5-0926-49a0-8640-ac6246f7fda8"}
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 0x1dfe91d6c5839067d9a9d9f26cd9a6e3e18ed8601c52f996345e38c78acc0e56. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1d2f1a5-0926-49a0-8640-ac6246f7fda8.json and https://artists.proofprofile.net/proofs/artist/e1d2f1a5-0926-49a0-8640-ac6246f7fda8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x1dfe91d6c5839067d9a9d9f26cd9a6e3e18ed8601c52f996345e38c78acc0e56","name":"Javier Nasceu","registered_at":"2026-06-21T06:49:38Z","symbol":"NIM1853075","token_address":"0x4d4134e0aa6e0ad5ec5d486582c601ead3d4a588","type":"artist","uuid":"e1d2f1a5-0926-49a0-8640-ac6246f7fda8"}
album: Candombe del Abrazo
  type: MusicAlbum
  date published: 2022-12-03
  track: Candombe del Abrazo
    type: MusicRecording
    duration: PT4M38S
    duration ms: 278649
    explicit: false
    by artist: Javier Nasceu
    in album: Candombe del Abrazo
      type: MusicAlbum
      date published: 2022-12-03
    genre: mpb
    isrc code: BXJVW2200006
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T19:10:43+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x48c2bb1edb033194c9e1990a8a0bc5ece7705fcc45e3f057f4a97eb36f2a12a6
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959051
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959051
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXJVW2200006
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T19:48:03Z
    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 0x48c2bb1edb033194c9e1990a8a0bc5ece7705fcc45e3f057f4a97eb36f2a12a6. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BXJVW2200006.
      date published: 2026-07-21T19:48:03Z
    audio: Candombe del Abrazo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 107.942
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.562
      additional property: Energy
        type: PropertyValue
        value: 0.456
      additional property: Speechiness
        type: PropertyValue
        value: 0.042
      additional property: Acousticness
        type: PropertyValue
        value: 0.778
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.233
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.572
      additional property: Loudness (dB)
        type: PropertyValue
        value: -12.336
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Nosso Caminho
  type: MusicAlbum
  date published: 2023-09-17
album: AMARU
  type: MusicAlbum
  date published: 2024-05-11
  track: AMARU
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188507
    explicit: false
    by artist: Javier Nasceu
    in album: AMARU
      type: MusicAlbum
      date published: 2024-05-11
    genre: mpb
    isrc code: BXJVW2400001
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T15:05:07+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb79ea3bde68f146b2c6c0fad320b4102f1f6d25eb69fd30f5cef761ca9b83327
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956725
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956725
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXJVW2400001
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T01:12:41Z
    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 0xb79ea3bde68f146b2c6c0fad320b4102f1f6d25eb69fd30f5cef761ca9b83327. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BXJVW2400001.
      date published: 2026-07-05T01:12:41Z
    audio: AMARU
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 103.248
      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: 0.482
      additional property: Energy
        type: PropertyValue
        value: 0.346
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.689
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Chacarera de las flores

Liveness
type: PropertyValue
value: 0.304

Valence (Positivity)
type: PropertyValue
value: 0.287

Loudness (dB)
type: PropertyValue
value: -13.02

Key Name
type: PropertyValue
value: A

Mode Name
type: PropertyValue
value: Minor

Chacarera de las flores
type: MusicAlbum
date published: 2024-12-15
track: Chacarera de las flores
  type: MusicRecording
  duration: PT3M23S
  duration ms: 203192
  explicit: false
  by artist: Javier Nasceu
  in album: Chacarera de las flores
    type: MusicAlbum
    date published: 2024-12-15
  genre: mpb
  isrc code: BXJVW2400003
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
    type: PropertyValue
    value: 2026-07-22T05:19:17+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0x94ccb20b9613ddbcb3251b8601be70c6a5dd139f73373c92205d8c14c90f44aa
  additional property: OTSHash
  additional property: OTSBitcoinBlock
    type: PropertyValue
    value: 959103
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/959103
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXJVW2400003
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-22T05:56:21Z
  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 0x94ccb20b9613ddbcb3251b8601be70c6a5dd139f73373c92205d8c14c90f44aa. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/BXJVW2400003.
    date published: 2026-07-22T05:56:21Z
  audio: Chacarera de las flores
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 100.204
    additional property: Musical Key
      type: PropertyValue
      value: 4
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 0
    additional property: Time Signature
      type: PropertyValue
      value: 4
    additional property: Danceability
      type: PropertyValue
      value: 0.483
    additional property: Energy
      type: PropertyValue
      value: 0.332
    additional property: Speechiness
      type: PropertyValue
      value: 0.068
    additional property: Acousticness
      type: PropertyValue
      value: 0.385
    additional property: Instrumentalness
      type: PropertyValue
      value: 0
    additional property: Liveness
      type: PropertyValue
      value: 0.58
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.599
    additional property: Loudness (dB)
      type: PropertyValue
      value: -11.651
    additional property: Key Name
      type: PropertyValue
      value: E
    additional property: Mode Name
      type: PropertyValue
      value: Minor