Sérgio Sansão
type: MusicGroup
genre: mpb
popularity: 5
followers: 83
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x611c0a0bd032ba6637213a17510b242b6b1ee3ed17960717a2ebc2f3f3d42a04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954031
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954031
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T01:43:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x611c0a0bd032ba6637213a17510b242b6b1ee3ed17960717a2ebc2f3f3d42a04","name":"Sérgio Sansão","registered_at":"2026-06-16T10:09:31Z","symbol":"NIM1018931","token_address":"0x7f19c5053328c7834964c85ac35d26d8929c9aba","type":"artist","uuid":"3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d"}
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 0x611c0a0bd032ba6637213a17510b242b6b1ee3ed17960717a2ebc2f3f3d42a04. Chain 2 (Bitcoin): anchored in block 954031 (2026-06-17T01:43:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d.json and https://artists.proofprofile.net/proofs/artist/3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T01:43:23Z
  text: {"copyright_id":"0x611c0a0bd032ba6637213a17510b242b6b1ee3ed17960717a2ebc2f3f3d42a04","name":"Sérgio Sansão","registered_at":"2026-06-16T10:09:31Z","symbol":"NIM1018931","token_address":"0x7f19c5053328c7834964c85ac35d26d8929c9aba","type":"artist","uuid":"3b1b2f0f-c71b-4b45-9bf5-7e1802cffc7d"}