Joan Sprei
type: MusicGroup
genre: rkt
genre: turreo
popularity: 16
followers: 311
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xeeaf46a86f49d40aa53261b07a9cae50f315a4a89ef47442da97ed0ce02a3ad7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953713
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953713
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/855744bd-937e-46ea-8e81-3805af30249b.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/855744bd-937e-46ea-8e81-3805af30249b.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/855744bd-937e-46ea-8e81-3805af30249b
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T00:33:41Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xeeaf46a86f49d40aa53261b07a9cae50f315a4a89ef47442da97ed0ce02a3ad7","name":"Joan Sprei","registered_at":"2026-06-14T18:28:24Z","symbol":"NIM0538874","token_address":"0xb793dc0394f0e70ccbf09fa9457e80c3c54f496e","type":"artist","uuid":"855744bd-937e-46ea-8e81-3805af30249b"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeaf46a86f49d40aa53261b07a9cae50f315a4a89ef47442da97ed0ce02a3ad7. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/855744bd-937e-46ea-8e81-3805af30249b.json and https://artists.proofprofile.net/proofs/artist/855744bd-937e-46ea-8e81-3805af30249b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T00:33:41Z
  text: {"copyright_id":"0xeeaf46a86f49d40aa53261b07a9cae50f315a4a89ef47442da97ed0ce02a3ad7","name":"Joan Sprei","registered_at":"2026-06-14T18:28:24Z","symbol":"NIM0538874","token_address":"0xb793dc0394f0e70ccbf09fa9457e80c3c54f496e","type":"artist","uuid":"855744bd-937e-46ea-8e81-3805af30249b"}
album: Vuelve Conmigo
  type: MusicAlbum
  date published: 2020-12-04
album: Ella Se Prende un Blunt
  type: MusicAlbum
  date published: 2021-02-05
album: De Velita (Remix)
  type: MusicAlbum
  date published: 2021-03-05
album: Hasta Abajo
  type: MusicAlbum
  date published: 2021-03-24
album: Toy Volao
  type: MusicAlbum
  date published: 2021-06-25
album: Andamo Ruleta
  type: MusicAlbum
  date published: 2021-08-27
  track: Andamo Ruleta
    type: MusicRecording
    duration: PT3M12S
    duration ms: 192379
    explicit: false
    by artist: Joan Sprei
    in album: Andamo Ruleta
      type: MusicAlbum
      date published: 2021-08-27
    genre: rkt
    genre: turreo
    isrc code: QZMZ92153047
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T20:27:02+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x09ea2b319bc9dd085be87790f31315d720fb40ccc74a8d65b9ffb2b33a7e1690
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956857
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956857
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92153047
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-06T01:26:17Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ea2b319bc9dd085be87790f31315d720fb40ccc74a8d65b9ffb2b33a7e1690. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZMZ92153047.
      date published: 2026-07-06T01:26:17Z
    audio: Andamo Ruleta
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 81.982
      additional property: Musical Key
        type: PropertyValue
        value: 1
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.814
      additional property: Energy
        type: PropertyValue
        value: 0.734
      additional property: Speechiness
        type: PropertyValue
        value: 0.145
      additional property: Acousticness
        type: PropertyValue
        value: 0.037
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.25
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.894
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.454
      additional property: Key Name
        type: PropertyValue
        value: C#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Cuando Llegue la Noche
  type: MusicAlbum
  date published: 2021-10-15
album: La Sombra Borracha 420
  type: MusicAlbum
  date published: 2022-08-26
album: Mari Pepa
  type: MusicAlbum
  date published: 2022-12-02
album: High!
  type: MusicAlbum
  date published: 2022-12-30
album: Esta Noche (Ke C Pudra)
  type: MusicAlbum
  date published: 2023-04-28
album: Bring Me Up
  type: MusicAlbum
  date published: 2023-10-13
album: Tell Me
  type: MusicAlbum
  date published: 2023-12-29
album: Trip
  type: MusicAlbum
  date published: 2024-06-07
album: Groove Addiction
  type: MusicAlbum
  date published: 2024-12-20
album: Bad Boy
  type: MusicAlbum
  date published: 2025-01-31
album: Electric Dreams
  type: MusicAlbum
  date published: 2025-03-07
album: Music Is My Everything
  type: MusicAlbum
  date published: 2025-05-02