Bill Cook
type: MusicGroup
description: William Osser Xavier Cook (October 8, 1895 – May 5, 1986) was a Canadian professional ice hockey player who was a right winger for the Saskatoon Crescents of the Western Canada Hockey League (WCHL) an
popularity: 5
followers: 73
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd4791846de7831aa99c54ce6f4979538cd9eb002ff411bd537c990efc7ac6ad
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954549
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954549
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab17a76d-8c42-4565-9b1f-df29ee24ef15.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ab17a76d-8c42-4565-9b1f-df29ee24ef15.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ab17a76d-8c42-4565-9b1f-df29ee24ef15
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T10:56:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd4791846de7831aa99c54ce6f4979538cd9eb002ff411bd537c990efc7ac6ad","name":"Bill Cook","registered_at":"2026-06-20T09:35:41Z","symbol":"NIM1581551","token_address":"0xa65baad0e65cdc93a9e28d54b2e4cfa42ffc7547","type":"artist","uuid":"ab17a76d-8c42-4565-9b1f-df29ee24ef15"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4791846de7831aa99c54ce6f4979538cd9eb002ff411bd537c990efc7ac6ad. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab17a76d-8c42-4565-9b1f-df29ee24ef15.json and https://artists.proofprofile.net/proofs/artist/ab17a76d-8c42-4565-9b1f-df29ee24ef15.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T10:56:20Z
  text: {"copyright_id":"0xcd4791846de7831aa99c54ce6f4979538cd9eb002ff411bd537c990efc7ac6ad","name":"Bill Cook","registered_at":"2026-06-20T09:35:41Z","symbol":"NIM1581551","token_address":"0xa65baad0e65cdc93a9e28d54b2e4cfa42ffc7547","type":"artist","uuid":"ab17a76d-8c42-4565-9b1f-df29ee24ef15"}