Bob CHAPMAN
type: MusicGroup
description: Robert Dennis Chapman (born 18 August 1946), also known as Sammy Chapman, is a footballer who played as a defender in the Football League during the 1960s and 1970s, most notably with Nottingham Fores
popularity: 5
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd4661137e9c3d4a24c9f73a200df5303b184fcc29d9849cf928fbb5a24258ab2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954533
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954533
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a42de05c-996b-494f-a4db-836460cef3e9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/a42de05c-996b-494f-a4db-836460cef3e9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/a42de05c-996b-494f-a4db-836460cef3e9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T08:57:02Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd4661137e9c3d4a24c9f73a200df5303b184fcc29d9849cf928fbb5a24258ab2","name":"Bob CHAPMAN","registered_at":"2026-06-20T06:57:01Z","symbol":"NIM1546196","token_address":"0xe81ad9f3cfd37ff352c0f35d89a0e6fa4db1eb47","type":"artist","uuid":"a42de05c-996b-494f-a4db-836460cef3e9"}
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 0xd4661137e9c3d4a24c9f73a200df5303b184fcc29d9849cf928fbb5a24258ab2. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a42de05c-996b-494f-a4db-836460cef3e9.json and https://artists.proofprofile.net/proofs/artist/a42de05c-996b-494f-a4db-836460cef3e9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T08:57:02Z
  text: {"copyright_id":"0xd4661137e9c3d4a24c9f73a200df5303b184fcc29d9849cf928fbb5a24258ab2","name":"Bob CHAPMAN","registered_at":"2026-06-20T06:57:01Z","symbol":"NIM1546196","token_address":"0xe81ad9f3cfd37ff352c0f35d89a0e6fa4db1eb47","type":"artist","uuid":"a42de05c-996b-494f-a4db-836460cef3e9"}
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