César Tafoya
type: MusicGroup
popularity: 3
followers: 365
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe3a285ec73ce92044e71487ae3f5fcc4ef6c254de8351ac8cd9ac94bbf51f6e9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954693
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954693
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e925df8f-9ac1-4957-956b-757b0dcf9118.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e925df8f-9ac1-4957-956b-757b0dcf9118.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e925df8f-9ac1-4957-956b-757b0dcf9118
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T11:50:32Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe3a285ec73ce92044e71487ae3f5fcc4ef6c254de8351ac8cd9ac94bbf51f6e9","name":"César Tafoya","registered_at":"2026-06-21T09:34:35Z","symbol":"NIM1889614","token_address":"0xab1d42b2ba6b7eb68ee645cbb5f1230ea3524d41","type":"artist","uuid":"e925df8f-9ac1-4957-956b-757b0dcf9118"}
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 0xe3a285ec73ce92044e71487ae3f5fcc4ef6c254de8351ac8cd9ac94bbf51f6e9. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e925df8f-9ac1-4957-956b-757b0dcf9118.json and https://artists.proofprofile.net/proofs/artist/e925df8f-9ac1-4957-956b-757b0dcf9118.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T11:50:32Z
  text: {"copyright_id":"0xe3a285ec73ce92044e71487ae3f5fcc4ef6c254de8351ac8cd9ac94bbf51f6e9","name":"César Tafoya","registered_at":"2026-06-21T09:34:35Z","symbol":"NIM1889614","token_address":"0xab1d42b2ba6b7eb68ee645cbb5f1230ea3524d41","type":"artist","uuid":"e925df8f-9ac1-4957-956b-757b0dcf9118"}
album: Llorona
  type: MusicAlbum
  date published: 2022-06-21
album: Vivo por ella
  type: MusicAlbum
  date published: 2022-06-22
album: Buenos Aires
  type: MusicAlbum
  date published: 2025-09-07
album: Vivo por ella
  type: MusicAlbum
  date published: 2025-09-13
album: Quizás, Quizás, Quizás
  type: MusicAlbum
  date published: 2025-09-19
album: Yo te extrañare
  type: MusicAlbum
  date published: 2025-09-19
  track: Yo te extrañare
    type: MusicRecording
    duration: PT5M50S
    duration ms: 350856
    explicit: false
    by artist: César Tafoya
    in album: Yo te extrañare
      type: MusicAlbum
      date published: 2025-09-19
    isrc code: QT3F32502010
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T22:07:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x18566b317e9f8c0a7289247f11b6d3efba318d579060bd89b840ca3fe50740c4
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956738
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956738
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3F32502010
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T04:47:21Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18566b317e9f8c0a7289247f11b6d3efba318d579060bd89b840ca3fe50740c4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT3F32502010.
      date published: 2026-07-05T04:47:21Z
    audio: Yo te extrañare
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 149.951
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.427
      additional property: Energy
        type: PropertyValue
        value: 0.388
      additional property: Speechiness
        type: PropertyValue
        value: 0.028
      additional property: Acousticness
        type: PropertyValue
        value: 0.675
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.019
      additional property: Liveness
        type: PropertyValue
        value: 0.116
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.284
      additional property: Loudness (dB)
        type: PropertyValue
        value: -10.537
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major