João Vinicius Barbosa
type: MusicGroup
popularity: 4
followers: 68
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa8ec145d7be51ce6bc0a54e4348c89f7671c6756fc7a85a1ca22ca2b19f7a521
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953933
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953933
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f3508db-1783-4c96-abe3-3d7ac9c0f165.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f3508db-1783-4c96-abe3-3d7ac9c0f165.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f3508db-1783-4c96-abe3-3d7ac9c0f165
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:13:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa8ec145d7be51ce6bc0a54e4348c89f7671c6756fc7a85a1ca22ca2b19f7a521","name":"João Vinicius Barbosa","registered_at":"2026-06-16T00:28:32Z","symbol":"NIM0880182","token_address":"0x798faf83913bcf24cc6d247428b8919da06f303c","type":"artist","uuid":"1f3508db-1783-4c96-abe3-3d7ac9c0f165"}
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 0xa8ec145d7be51ce6bc0a54e4348c89f7671c6756fc7a85a1ca22ca2b19f7a521. Chain 2 (Bitcoin): anchored in block 953933 (2026-06-16T11:13:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f3508db-1783-4c96-abe3-3d7ac9c0f165.json and https://artists.proofprofile.net/proofs/artist/1f3508db-1783-4c96-abe3-3d7ac9c0f165.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:13:24Z
  text: {"copyright_id":"0xa8ec145d7be51ce6bc0a54e4348c89f7671c6756fc7a85a1ca22ca2b19f7a521","name":"João Vinicius Barbosa","registered_at":"2026-06-16T00:28:32Z","symbol":"NIM0880182","token_address":"0x798faf83913bcf24cc6d247428b8919da06f303c","type":"artist","uuid":"1f3508db-1783-4c96-abe3-3d7ac9c0f165"}