Caca Barretto
type: MusicGroup
popularity: 2
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xaf5ac621266968e16d87464438d6ccfe7f691ae8997f9faafd05d5ac894bad73
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xaf5ac621266968e16d87464438d6ccfe7f691ae8997f9faafd05d5ac894bad73","name":"Caca Barretto","registered_at":"2026-06-21T13:14:48Z","symbol":"NIM1932437","token_address":"0x3b567933955af64254c20a4602129e73b61337c6","type":"artist","uuid":"f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d"}
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 0xaf5ac621266968e16d87464438d6ccfe7f691ae8997f9faafd05d5ac894bad73. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d.json and https://artists.proofprofile.net/proofs/artist/f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
  text: {"copyright_id":"0xaf5ac621266968e16d87464438d6ccfe7f691ae8997f9faafd05d5ac894bad73","name":"Caca Barretto","registered_at":"2026-06-21T13:14:48Z","symbol":"NIM1932437","token_address":"0x3b567933955af64254c20a4602129e73b61337c6","type":"artist","uuid":"f1269cfc-5a1d-4ab0-bb83-bbad5b095e7d"}
album: Os Tudos
  type: MusicAlbum
  date published: 2025-04-11
album: Acontecenças
  type: MusicAlbum
  date published: 2025-04-25