Jack Spencer
type: MusicGroup
genre: drum and bass
popularity: 6
followers: 60
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0988d298842ca4c8c8e167562cae04856f06dc49a99c80f3c4a772de64ed6ab3
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953909
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953909
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1851e07a-2c02-44ff-b4cc-03d5298d3c33.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1851e07a-2c02-44ff-b4cc-03d5298d3c33.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1851e07a-2c02-44ff-b4cc-03d5298d3c33
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:53:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0988d298842ca4c8c8e167562cae04856f06dc49a99c80f3c4a772de64ed6ab3","name":"Jack Spencer","registered_at":"2026-06-15T22:00:16Z","symbol":"NIM0844787","token_address":"0xbbdb8c276f88c561e66ea9d8248a11c8d236f9fb","type":"artist","uuid":"1851e07a-2c02-44ff-b4cc-03d5298d3c33"}
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 0x0988d298842ca4c8c8e167562cae04856f06dc49a99c80f3c4a772de64ed6ab3. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1851e07a-2c02-44ff-b4cc-03d5298d3c33.json and https://artists.proofprofile.net/proofs/artist/1851e07a-2c02-44ff-b4cc-03d5298d3c33.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:53:13Z
  text: {"copyright_id":"0x0988d298842ca4c8c8e167562cae04856f06dc49a99c80f3c4a772de64ed6ab3","name":"Jack Spencer","registered_at":"2026-06-15T22:00:16Z","symbol":"NIM0844787","token_address":"0xbbdb8c276f88c561e66ea9d8248a11c8d236f9fb","type":"artist","uuid":"1851e07a-2c02-44ff-b4cc-03d5298d3c33"}
album: Badboys
  type: MusicAlbum
  date published: 2023-03-23