Calvin Boyce
type: MusicGroup
genre: amapiano
genre: gqom
genre: private school piano
popularity: 3
followers: 168
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x479b3e5a755e66f85ab1071c6a1530fae5bc08956933fecbe2d8a1aba5d9f50f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954659
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954659
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dd80e77a-d16d-4d59-a1d3-ae19b31b08c7.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/dd80e77a-d16d-4d59-a1d3-ae19b31b08c7.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/dd80e77a-d16d-4d59-a1d3-ae19b31b08c7
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T06:14:42Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x479b3e5a755e66f85ab1071c6a1530fae5bc08956933fecbe2d8a1aba5d9f50f","name":"Calvin Boyce","registered_at":"2026-06-21T05:23:20Z","symbol":"NIM1832719","token_address":"0x887ec4038b33577b03aaaae001222e6931d84a38","type":"artist","uuid":"dd80e77a-d16d-4d59-a1d3-ae19b31b08c7"}
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 0x479b3e5a755e66f85ab1071c6a1530fae5bc08956933fecbe2d8a1aba5d9f50f. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd80e77a-d16d-4d59-a1d3-ae19b31b08c7.json and https://artists.proofprofile.net/proofs/artist/dd80e77a-d16d-4d59-a1d3-ae19b31b08c7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T06:14:42Z
  text: {"copyright_id":"0x479b3e5a755e66f85ab1071c6a1530fae5bc08956933fecbe2d8a1aba5d9f50f","name":"Calvin Boyce","registered_at":"2026-06-21T05:23:20Z","symbol":"NIM1832719","token_address":"0x887ec4038b33577b03aaaae001222e6931d84a38","type":"artist","uuid":"dd80e77a-d16d-4d59-a1d3-ae19b31b08c7"}
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