Brendan Croker
type: MusicGroup
description: Brendan Christopher Croker (15 August 1953 – 10 September 2023) was an English musician, who recorded albums under his own name and with an occasional backing band, The Five O'Clock Shadows. Early l
popularity: 3
followers: 423
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x260b777c9aed40068f9b5dc0eff5e92d97122bed4d8cb0511a886606d9e1c51d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953968
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953968
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2971fc23-fca4-441f-95e8-5642a2757239.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/2971fc23-fca4-441f-95e8-5642a2757239.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/2971fc23-fca4-441f-95e8-5642a2757239
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T16:01:49Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x260b777c9aed40068f9b5dc0eff5e92d97122bed4d8cb0511a886606d9e1c51d","name":"Brendan Croker","registered_at":"2026-06-16T03:55:59Z","symbol":"NIM0929727","token_address":"0xd343c4fffb288615fda22aa606d915d15dca6811","type":"artist","uuid":"2971fc23-fca4-441f-95e8-5642a2757239"}
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 0x260b777c9aed40068f9b5dc0eff5e92d97122bed4d8cb0511a886606d9e1c51d. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2971fc23-fca4-441f-95e8-5642a2757239.json and https://artists.proofprofile.net/proofs/artist/2971fc23-fca4-441f-95e8-5642a2757239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T16:01:49Z
  text: {"copyright_id":"0x260b777c9aed40068f9b5dc0eff5e92d97122bed4d8cb0511a886606d9e1c51d","name":"Brendan Croker","registered_at":"2026-06-16T03:55:59Z","symbol":"NIM0929727","token_address":"0xd343c4fffb288615fda22aa606d915d15dca6811","type":"artist","uuid":"2971fc23-fca4-441f-95e8-5642a2757239"}