Ian Collier
type: MusicGroup
description: Ian Gordon Arthur Collier (25 January 1943 – 1 October 2008) was a British actor. Collier appeared on stage in Tony Richardson's production of Hamlet in 1969 at London's Roundhouse, and at the Lunt-F
popularity: 6
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9c66e9482e01c628b1b777e7acb2b57788a1b7874fd99d55a85c86aa1263b075
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ed58e6c-e45c-4910-8738-93d7284870d5.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1ed58e6c-e45c-4910-8738-93d7284870d5.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1ed58e6c-e45c-4910-8738-93d7284870d5
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9c66e9482e01c628b1b777e7acb2b57788a1b7874fd99d55a85c86aa1263b075","name":"Ian Collier","registered_at":"2026-06-16T00:20:11Z","symbol":"NIM0878186","token_address":"0x9c578c4627b8d1d3b71e4712ede85e952a96edfc","type":"artist","uuid":"1ed58e6c-e45c-4910-8738-93d7284870d5"}
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 0x9c66e9482e01c628b1b777e7acb2b57788a1b7874fd99d55a85c86aa1263b075. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ed58e6c-e45c-4910-8738-93d7284870d5.json and https://artists.proofprofile.net/proofs/artist/1ed58e6c-e45c-4910-8738-93d7284870d5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
  text: {"copyright_id":"0x9c66e9482e01c628b1b777e7acb2b57788a1b7874fd99d55a85c86aa1263b075","name":"Ian Collier","registered_at":"2026-06-16T00:20:11Z","symbol":"NIM0878186","token_address":"0x9c578c4627b8d1d3b71e4712ede85e952a96edfc","type":"artist","uuid":"1ed58e6c-e45c-4910-8738-93d7284870d5"}