The Bookends
type: MusicGroup
genre: celtic
genre: traditional music
popularity: 2
followers: 290
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa40730fae6bf5fe409cda5b7f3734994b33c5aa5c7ffbe00cc0af14a8eecfd6d
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954047
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954047
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/426d95c2-b035-4da8-a455-4e068eeb6ce9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/426d95c2-b035-4da8-a455-4e068eeb6ce9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/426d95c2-b035-4da8-a455-4e068eeb6ce9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T04:56:08Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa40730fae6bf5fe409cda5b7f3734994b33c5aa5c7ffbe00cc0af14a8eecfd6d","name":"The Bookends","registered_at":"2026-06-16T12:43:07Z","symbol":"NIM1055563","token_address":"0x2c67d1a87e46c54bd65f84accbdc3d98f1a374c6","type":"artist","uuid":"426d95c2-b035-4da8-a455-4e068eeb6ce9"}
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 0xa40730fae6bf5fe409cda5b7f3734994b33c5aa5c7ffbe00cc0af14a8eecfd6d. Chain 2 (Bitcoin): anchored in block 954047 (2026-06-17T04:56:08Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/426d95c2-b035-4da8-a455-4e068eeb6ce9.json and https://artists.proofprofile.net/proofs/artist/426d95c2-b035-4da8-a455-4e068eeb6ce9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T04:56:08Z
  text: {"copyright_id":"0xa40730fae6bf5fe409cda5b7f3734994b33c5aa5c7ffbe00cc0af14a8eecfd6d","name":"The Bookends","registered_at":"2026-06-16T12:43:07Z","symbol":"NIM1055563","token_address":"0x2c67d1a87e46c54bd65f84accbdc3d98f1a374c6","type":"artist","uuid":"426d95c2-b035-4da8-a455-4e068eeb6ce9"}
album: Chapter One
  type: MusicAlbum
  date published: 2020-04-15
album: A Celtic Celebration
  type: MusicAlbum
  date published: 2023-01-25