Billy Lefler
type: MusicGroup
popularity: 5
followers: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb99c8a33b1b1eeab9c2d2b7c334b23a02decdd129548ec7bf4f59b9ba8042bf3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953924
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953924
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cf5719d-2488-4510-b229-a816d681b715.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1cf5719d-2488-4510-b229-a816d681b715.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1cf5719d-2488-4510-b229-a816d681b715
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T09:52:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb99c8a33b1b1eeab9c2d2b7c334b23a02decdd129548ec7bf4f59b9ba8042bf3","name":"Billy Lefler","registered_at":"2026-06-15T23:39:16Z","symbol":"NIM0868428","token_address":"0x24df1a6a7f402619882ea9e40910f7e6f074e165","type":"artist","uuid":"1cf5719d-2488-4510-b229-a816d681b715"}
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 0xb99c8a33b1b1eeab9c2d2b7c334b23a02decdd129548ec7bf4f59b9ba8042bf3. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1cf5719d-2488-4510-b229-a816d681b715.json and https://artists.proofprofile.net/proofs/artist/1cf5719d-2488-4510-b229-a816d681b715.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T09:52:28Z
  text: {"copyright_id":"0xb99c8a33b1b1eeab9c2d2b7c334b23a02decdd129548ec7bf4f59b9ba8042bf3","name":"Billy Lefler","registered_at":"2026-06-15T23:39:16Z","symbol":"NIM0868428","token_address":"0x24df1a6a7f402619882ea9e40910f7e6f074e165","type":"artist","uuid":"1cf5719d-2488-4510-b229-a816d681b715"}