Harry Cheng
type: MusicGroup
popularity: 2
followers: 28
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe9ba04f7b4346d9f782894385cae27ca950a996ab81610fae2e9c3816022ab72
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953848
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953848
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01f3b35a-0969-42fb-ad0c-7647049c75ff.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/01f3b35a-0969-42fb-ad0c-7647049c75ff.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/01f3b35a-0969-42fb-ad0c-7647049c75ff
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T22:54:37Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe9ba04f7b4346d9f782894385cae27ca950a996ab81610fae2e9c3816022ab72","name":"Harry Cheng","registered_at":"2026-06-15T14:08:50Z","symbol":"NIM0732310","token_address":"0x85f0ffac81e7853e789cc3f40a3526bc201d9f5f","type":"artist","uuid":"01f3b35a-0969-42fb-ad0c-7647049c75ff"}
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 0xe9ba04f7b4346d9f782894385cae27ca950a996ab81610fae2e9c3816022ab72. Chain 2 (Bitcoin): anchored in block 953848 (2026-06-15T22:54:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01f3b35a-0969-42fb-ad0c-7647049c75ff.json and https://artists.proofprofile.net/proofs/artist/01f3b35a-0969-42fb-ad0c-7647049c75ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T22:54:37Z
  text: {"copyright_id":"0xe9ba04f7b4346d9f782894385cae27ca950a996ab81610fae2e9c3816022ab72","name":"Harry Cheng","registered_at":"2026-06-15T14:08:50Z","symbol":"NIM0732310","token_address":"0x85f0ffac81e7853e789cc3f40a3526bc201d9f5f","type":"artist","uuid":"01f3b35a-0969-42fb-ad0c-7647049c75ff"}