Josefina Vera
type: MusicGroup
popularity: 5
followers: 300
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe5017cc63ffc3f22b63752b2c24b21b95d547434870ffbe8a7e06b49ac704441
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/819f0835-edf4-4aab-a66c-d869c6d20d74.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/819f0835-edf4-4aab-a66c-d869c6d20d74.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/819f0835-edf4-4aab-a66c-d869c6d20d74
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe5017cc63ffc3f22b63752b2c24b21b95d547434870ffbe8a7e06b49ac704441","name":"Josefina Vera","registered_at":"2026-06-17T10:45:40Z","symbol":"NIM1371072","token_address":"0xb6bad91ebe43af43759a75c8018110b078d57dab","type":"artist","uuid":"819f0835-edf4-4aab-a66c-d869c6d20d74"}
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 0xe5017cc63ffc3f22b63752b2c24b21b95d547434870ffbe8a7e06b49ac704441. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/819f0835-edf4-4aab-a66c-d869c6d20d74.json and https://artists.proofprofile.net/proofs/artist/819f0835-edf4-4aab-a66c-d869c6d20d74.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xe5017cc63ffc3f22b63752b2c24b21b95d547434870ffbe8a7e06b49ac704441","name":"Josefina Vera","registered_at":"2026-06-17T10:45:40Z","symbol":"NIM1371072","token_address":"0xb6bad91ebe43af43759a75c8018110b078d57dab","type":"artist","uuid":"819f0835-edf4-4aab-a66c-d869c6d20d74"}
album: Sesiones Acústicas (En Vivo)
  type: MusicAlbum
  date published: 2018-03-27
album: Eterno No Sé
  type: MusicAlbum
  date published: 2019-10-16
album: No la Veas Pasar
  type: MusicAlbum
  date published: 2020-02-12
album: Buscar
  type: MusicAlbum
  date published: 2020-08-21
album: ¿Cuándo?
  type: MusicAlbum
  date published: 2021-01-08
album: Amor Desvirtual
  type: MusicAlbum
  date published: 2021-10-08
  track: ¿ Cuándo ?
    type: MusicRecording
    duration: PT3M8S
    duration ms: 188497
    explicit: false
    by artist: Josefina Vera
    in album: Amor Desvirtual
      type: MusicAlbum
      date published: 2021-10-08
    isrc code: ARHXW2005232
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T20:57:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xde1cbadcb540eec685ec91e8ad1464b0407aae71bda70272feb4e68d7d6a79e1
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959058
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959058
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARHXW2005232
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T21:09:36Z
    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 0xde1cbadcb540eec685ec91e8ad1464b0407aae71bda70272feb4e68d7d6a79e1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ARHXW2005232.
      date published: 2026-07-21T21:09:36Z
    audio: ¿ Cuándo ?
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 132.041
      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: 0.606
      additional property: Energy
        type: PropertyValue
        value: 0.396
      additional property: Speechiness
        type: PropertyValue
        value: 0.034
      additional property: Acousticness
        type: PropertyValue
        value: 0.27
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.089
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.59
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.161
      additional property: Key Name
        type: PropertyValue
        value: A
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Con el Corazón Torcido
  type: MusicAlbum
  date published: 2024-05-06