Bill Lefler
type: MusicGroup
popularity: 2
followers: 14
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x80a6f18d8e6351b26b08eb2780070e3ac30f27d8764e0e3ad0a81631388fcd44
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfa75e34-5800-4395-bd1e-4ea335c084b2.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cfa75e34-5800-4395-bd1e-4ea335c084b2.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cfa75e34-5800-4395-bd1e-4ea335c084b2
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x80a6f18d8e6351b26b08eb2780070e3ac30f27d8764e0e3ad0a81631388fcd44","name":"Bill Lefler","registered_at":"2026-06-21T00:36:13Z","symbol":"NIM1765250","token_address":"0xeacaa89f1ff91d1a1c57356eda4e32feb0642611","type":"artist","uuid":"cfa75e34-5800-4395-bd1e-4ea335c084b2"}
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 0x80a6f18d8e6351b26b08eb2780070e3ac30f27d8764e0e3ad0a81631388fcd44. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfa75e34-5800-4395-bd1e-4ea335c084b2.json and https://artists.proofprofile.net/proofs/artist/cfa75e34-5800-4395-bd1e-4ea335c084b2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x80a6f18d8e6351b26b08eb2780070e3ac30f27d8764e0e3ad0a81631388fcd44","name":"Bill Lefler","registered_at":"2026-06-21T00:36:13Z","symbol":"NIM1765250","token_address":"0xeacaa89f1ff91d1a1c57356eda4e32feb0642611","type":"artist","uuid":"cfa75e34-5800-4395-bd1e-4ea335c084b2"}