João de Campos
type: MusicGroup
popularity: 4
followers: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xde0abc02b0e9b97a1002ca2dbae5b719659410042e0be890f518f2f3398d067f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954728
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954728
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f972076f-64c5-4f9c-81fc-757facdc1131.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f972076f-64c5-4f9c-81fc-757facdc1131.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f972076f-64c5-4f9c-81fc-757facdc1131
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T18:08:38Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xde0abc02b0e9b97a1002ca2dbae5b719659410042e0be890f518f2f3398d067f","name":"João de Campos","registered_at":"2026-06-21T16:22:56Z","symbol":"NIM1972232","token_address":"0xa66410609e02d7dd77d9db52a0f2c5c5a952fbe5","type":"artist","uuid":"f972076f-64c5-4f9c-81fc-757facdc1131"}
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 0xde0abc02b0e9b97a1002ca2dbae5b719659410042e0be890f518f2f3398d067f. Chain 2 (Bitcoin): anchored in block 954728 (2026-06-21T18:08:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f972076f-64c5-4f9c-81fc-757facdc1131.json and https://artists.proofprofile.net/proofs/artist/f972076f-64c5-4f9c-81fc-757facdc1131.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T18:08:38Z
  text: {"copyright_id":"0xde0abc02b0e9b97a1002ca2dbae5b719659410042e0be890f518f2f3398d067f","name":"João de Campos","registered_at":"2026-06-21T16:22:56Z","symbol":"NIM1972232","token_address":"0xa66410609e02d7dd77d9db52a0f2c5c5a952fbe5","type":"artist","uuid":"f972076f-64c5-4f9c-81fc-757facdc1131"}