Leo Graham
type: MusicGroup
genre: dub
genre: rocksteady
genre: roots reggae
description: Leo Graham was a Jamaican singer. He first sang with The Bleechers, then after leaving the group recorded several solo singles in the 1970sChuck Foster Roots Rock Reggae: The Oral History of Reggae
popularity: 2
followers: 225
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8b263b4507277af77af0b02650710f3f6d188aba7b2b417864999cbdaf302606
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954689
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954689
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e21333cf-4888-4d4c-9b18-cf7a2be297b9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e21333cf-4888-4d4c-9b18-cf7a2be297b9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e21333cf-4888-4d4c-9b18-cf7a2be297b9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8b263b4507277af77af0b02650710f3f6d188aba7b2b417864999cbdaf302606","name":"Leo Graham","registered_at":"2026-06-21T07:22:58Z","symbol":"NIM1861143","token_address":"0x4c94dc845a8b533365890a14308a170750fead0e","type":"artist","uuid":"e21333cf-4888-4d4c-9b18-cf7a2be297b9"}
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 0x8b263b4507277af77af0b02650710f3f6d188aba7b2b417864999cbdaf302606. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e21333cf-4888-4d4c-9b18-cf7a2be297b9.json and https://artists.proofprofile.net/proofs/artist/e21333cf-4888-4d4c-9b18-cf7a2be297b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x8b263b4507277af77af0b02650710f3f6d188aba7b2b417864999cbdaf302606","name":"Leo Graham","registered_at":"2026-06-21T07:22:58Z","symbol":"NIM1861143","token_address":"0x4c94dc845a8b533365890a14308a170750fead0e","type":"artist","uuid":"e21333cf-4888-4d4c-9b18-cf7a2be297b9"}