John Kay & The Sparrow
type: MusicGroup
genre: acid rock
genre: psychedelic rock
popularity: 3
followers: 262
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x13bee1893c57e5982a64970a954d73ea3556dc8df7c61619234a6f1466748efe
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/e291b058-34a5-4255-82d5-29fff8bcbc6d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e291b058-34a5-4255-82d5-29fff8bcbc6d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e291b058-34a5-4255-82d5-29fff8bcbc6d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T10:35:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x13bee1893c57e5982a64970a954d73ea3556dc8df7c61619234a6f1466748efe","name":"John Kay & The Sparrow","registered_at":"2026-06-21T07:03:55Z","symbol":"NIM1856472","token_address":"0x7750c2e40f84b8ea2695ce5d303c57daa6860fdc","type":"artist","uuid":"e291b058-34a5-4255-82d5-29fff8bcbc6d"}
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 0x13bee1893c57e5982a64970a954d73ea3556dc8df7c61619234a6f1466748efe. 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/e291b058-34a5-4255-82d5-29fff8bcbc6d.json and https://artists.proofprofile.net/proofs/artist/e291b058-34a5-4255-82d5-29fff8bcbc6d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T10:35:31Z
  text: {"copyright_id":"0x13bee1893c57e5982a64970a954d73ea3556dc8df7c61619234a6f1466748efe","name":"John Kay & The Sparrow","registered_at":"2026-06-21T07:03:55Z","symbol":"NIM1856472","token_address":"0x7750c2e40f84b8ea2695ce5d303c57daa6860fdc","type":"artist","uuid":"e291b058-34a5-4255-82d5-29fff8bcbc6d"}
album: John Kay & The Sparrow (Expanded Edition)
  type: MusicAlbum
  date published: 1969-07-01