Delroy Washington
type: MusicGroup
genre: reggae
genre: rocksteady
genre: roots reggae
description: Delroy Washington (5 November 1952 – 27 March 2020) was a Jamaican-British reggae singer best known for his releases for Virgin Records in the late 1970s. Biography Born in Westmoreland, Jamaica, Was
popularity: 2
followers: 48
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x765ee5b8600b484caf219dc7cf2ad8d8cf2ae71f9398b69b4c4c4862d641cc89
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x765ee5b8600b484caf219dc7cf2ad8d8cf2ae71f9398b69b4c4c4862d641cc89","name":"Delroy Washington","registered_at":"2026-06-17T06:16:59Z","symbol":"NIM1307024","token_address":"0xe52ad11e0a87e81d31e68aa2de4dea4ffed380a3","type":"artist","uuid":"74f5569b-704e-4ffe-8325-83cd485d4b7e"}
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 0x765ee5b8600b484caf219dc7cf2ad8d8cf2ae71f9398b69b4c4c4862d641cc89. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.json and https://artists.proofprofile.net/proofs/artist/74f5569b-704e-4ffe-8325-83cd485d4b7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x765ee5b8600b484caf219dc7cf2ad8d8cf2ae71f9398b69b4c4c4862d641cc89","name":"Delroy Washington","registered_at":"2026-06-17T06:16:59Z","symbol":"NIM1307024","token_address":"0xe52ad11e0a87e81d31e68aa2de4dea4ffed380a3","type":"artist","uuid":"74f5569b-704e-4ffe-8325-83cd485d4b7e"}