Bill Washer
type: MusicGroup
genre: jazz fusion
popularity: 4
followers: 31
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x74b7a23819477201bc7fdd693bbc299a7917401ca54d4e2dc158d20af13360de
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954513
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954513
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9dd266d6-4689-4d4c-ac5d-fe090d2daa95.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9dd266d6-4689-4d4c-ac5d-fe090d2daa95.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9dd266d6-4689-4d4c-ac5d-fe090d2daa95
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T06:31:18Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x74b7a23819477201bc7fdd693bbc299a7917401ca54d4e2dc158d20af13360de","name":"Bill Washer","registered_at":"2026-06-20T04:22:25Z","symbol":"NIM1510959","token_address":"0xaf1e4423b9d8dfb7a9a36ef950db169508b3ebc9","type":"artist","uuid":"9dd266d6-4689-4d4c-ac5d-fe090d2daa95"}
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 0x74b7a23819477201bc7fdd693bbc299a7917401ca54d4e2dc158d20af13360de. Chain 2 (Bitcoin): anchored in block 954513 (2026-06-20T06:31:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dd266d6-4689-4d4c-ac5d-fe090d2daa95.json and https://artists.proofprofile.net/proofs/artist/9dd266d6-4689-4d4c-ac5d-fe090d2daa95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T06:31:18Z
  text: {"copyright_id":"0x74b7a23819477201bc7fdd693bbc299a7917401ca54d4e2dc158d20af13360de","name":"Bill Washer","registered_at":"2026-06-20T04:22:25Z","symbol":"NIM1510959","token_address":"0xaf1e4423b9d8dfb7a9a36ef950db169508b3ebc9","type":"artist","uuid":"9dd266d6-4689-4d4c-ac5d-fe090d2daa95"}
album: A.S.A.P.
  type: MusicAlbum
  date published: 2003-01-01
album: Solitary
  type: MusicAlbum
  date published: 2003-02-12