Cheryl Leonard
type: MusicGroup
genre: dark ambient
popularity: 2
followers: 78
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4c530213e7555f3982f79285bfbc5571a412297f952e27e2477e7ee94f16c8ec
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954013
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954013
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34502ab8-e32a-42d0-8464-6534a13c1b26.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/34502ab8-e32a-42d0-8464-6534a13c1b26.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/34502ab8-e32a-42d0-8464-6534a13c1b26
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T22:27:01Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x4c530213e7555f3982f79285bfbc5571a412297f952e27e2477e7ee94f16c8ec","name":"Cheryl Leonard","registered_at":"2026-06-16T07:48:52Z","symbol":"NIM0985356","token_address":"0xef9f9d8cdc117ff8551a24c48de69d937a3a8bdf","type":"artist","uuid":"34502ab8-e32a-42d0-8464-6534a13c1b26"}
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 0x4c530213e7555f3982f79285bfbc5571a412297f952e27e2477e7ee94f16c8ec. Chain 2 (Bitcoin): anchored in block 954013 (2026-06-16T22:27:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34502ab8-e32a-42d0-8464-6534a13c1b26.json and https://artists.proofprofile.net/proofs/artist/34502ab8-e32a-42d0-8464-6534a13c1b26.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T22:27:01Z
  text: {"copyright_id":"0x4c530213e7555f3982f79285bfbc5571a412297f952e27e2477e7ee94f16c8ec","name":"Cheryl Leonard","registered_at":"2026-06-16T07:48:52Z","symbol":"NIM0985356","token_address":"0xef9f9d8cdc117ff8551a24c48de69d937a3a8bdf","type":"artist","uuid":"34502ab8-e32a-42d0-8464-6534a13c1b26"}
album: Antarctica: Music from the Ice
  type: MusicAlbum
  date published: 2022-07-08