EFRAH 921
type: MusicGroup
popularity: 4
followers: 308
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x3544b0aa4f41741cf848120c33c8c0ba4f8c38066c23527bbe80e3ea85450531
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954784
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954784
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f18fd526-d927-45e6-be3c-c911678b3f25.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f18fd526-d927-45e6-be3c-c911678b3f25.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f18fd526-d927-45e6-be3c-c911678b3f25
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-22T02:53:59Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x3544b0aa4f41741cf848120c33c8c0ba4f8c38066c23527bbe80e3ea85450531","name":"EFRAH 921","registered_at":"2026-06-21T13:45:12Z","symbol":"NIM1939115","token_address":"0xa50c0e8a33fa0d1edf92fb5d7be1eae89b93b540","type":"artist","uuid":"f18fd526-d927-45e6-be3c-c911678b3f25"}
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 0x3544b0aa4f41741cf848120c33c8c0ba4f8c38066c23527bbe80e3ea85450531. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f18fd526-d927-45e6-be3c-c911678b3f25.json and https://artists.proofprofile.net/proofs/artist/f18fd526-d927-45e6-be3c-c911678b3f25.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-22T02:53:59Z
  text: {"copyright_id":"0x3544b0aa4f41741cf848120c33c8c0ba4f8c38066c23527bbe80e3ea85450531","name":"EFRAH 921","registered_at":"2026-06-21T13:45:12Z","symbol":"NIM1939115","token_address":"0xa50c0e8a33fa0d1edf92fb5d7be1eae89b93b540","type":"artist","uuid":"f18fd526-d927-45e6-be3c-c911678b3f25"}
album: Ying Yang
  type: MusicAlbum
  date published: 2020-07-18
album: Si Sintieras
  type: MusicAlbum
  date published: 2021-05-31
album: Lejos De Mí
  type: MusicAlbum
  date published: 2021-10-20
album: Que Te Dice Tu Almohada
  type: MusicAlbum
  date published: 2022-01-20
album: Horas Contadas
  type: MusicAlbum
  date published: 2022-05-20
album: Como Hiciste Vos?
  type: MusicAlbum
  date published: 2022-06-17
album: Volverás
  type: MusicAlbum
  date published: 2022-08-01
album: Felices x Siempre
  type: MusicAlbum
  date published: 2023-02-14
album: Bachata Pa Mi Ex
  type: MusicAlbum
  date published: 2023-03-24
album: Intenté Cambiar
  type: MusicAlbum
  date published: 2023-06-23
album: Deja Vu
  type: MusicAlbum
  date published: 2023-07-28
album: Suéltalo
  type: MusicAlbum
  date published: 2023-10-27
album: Ya Se Fué
  type: MusicAlbum
  date published: 2023-12-01
  track: Ya Se Fué
    type: MusicRecording
    duration: PT2M56S
    duration ms: 176182
    explicit: false
    by artist: EFRAH 921
    in album: Ya Se Fué
      type: MusicAlbum
      date published: 2023-12-01
    isrc code: QZZ8A2395266
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-17T16:20:05+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7a3680cb037dd0af0266b2067ecce4c4b100e13fcafd171bb6825f0b1644ff68
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958436
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958436
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ8A2395266
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-17T16:42:22Z
    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 0x7a3680cb037dd0af0266b2067ecce4c4b100e13fcafd171bb6825f0b1644ff68. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZZ8A2395266.
      date published: 2026-07-17T16:42:22Z
    audio: Ya Se Fué
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.051
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.698
      additional property: Energy
        type: PropertyValue
        value: 0.598
      additional property: Speechiness
        type: PropertyValue
        value: 0.372
      additional property: Acousticness
        type: PropertyValue
        value: 0.531
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.106
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.417
      additional property: Loudness (dB)
        type: PropertyValue
        value: -11.534
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Let You Go
  type: MusicAlbum
  date published: 2024-02-16
album: Me Extrañas
  type: MusicAlbum
  date published: 2024-04-25
album: No Hay Nadie
  type: MusicAlbum
  date published: 2024-06-19
album: Otra Noche Más
  type: MusicAlbum
  date published: 2024-09-20
album: Te Llamé
  type: MusicAlbum
  date published: 2024-11-07
album: Algo Similar
  type: MusicAlbum
  date published: 2025-05-09
album: Tu recuerdo
  type: MusicAlbum
  date published: 2025-08-28
album: Pa sanar el cora
  type: MusicAlbum
  date published: 2025-09-18