Gary Chan
type: MusicGroup
genre: c-pop
genre: gufeng
description: thumb|120px|Chan in 2016 Gary Chan Hak-kan, BBS, JP (born 24 April 1976) is a Hong Kong politician who serves as a member of the Legislative Council of Hong Kong since 2008. He represents the New Te
popularity: 2
followers: 8
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x45e0a530cdc27b890332476a0762f68a9115f924cedd728b7c3bb408c405c929
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954742
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954742
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdcb07a7-16e4-46a6-b952-8228c1d093d0.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fdcb07a7-16e4-46a6-b952-8228c1d093d0.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fdcb07a7-16e4-46a6-b952-8228c1d093d0
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T20:46:40Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x45e0a530cdc27b890332476a0762f68a9115f924cedd728b7c3bb408c405c929","name":"Gary Chan","registered_at":"2026-06-21T17:47:09Z","symbol":"NIM1991473","token_address":"0xc1fce387c648267883af84c66048afef4a0fd098","type":"artist","uuid":"fdcb07a7-16e4-46a6-b952-8228c1d093d0"}
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 0x45e0a530cdc27b890332476a0762f68a9115f924cedd728b7c3bb408c405c929. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fdcb07a7-16e4-46a6-b952-8228c1d093d0.json and https://artists.proofprofile.net/proofs/artist/fdcb07a7-16e4-46a6-b952-8228c1d093d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T20:46:40Z
  text: {"copyright_id":"0x45e0a530cdc27b890332476a0762f68a9115f924cedd728b7c3bb408c405c929","name":"Gary Chan","registered_at":"2026-06-21T17:47:09Z","symbol":"NIM1991473","token_address":"0xc1fce387c648267883af84c66048afef4a0fd098","type":"artist","uuid":"fdcb07a7-16e4-46a6-b952-8228c1d093d0"}