The "Half a Sixpence" 2016 London Cast
type: MusicGroup
genre: musicals
popularity: 11
followers: 336
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x32f1bfe4f951997b6aaeca98d8d1292ab0366e8391a98e583430b3bf02b248f4
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953827
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953827
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d09d1ae4-babf-474e-9be6-b7392611c2ec.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/d09d1ae4-babf-474e-9be6-b7392611c2ec.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/d09d1ae4-babf-474e-9be6-b7392611c2ec
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T19:59:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x32f1bfe4f951997b6aaeca98d8d1292ab0366e8391a98e583430b3bf02b248f4","name":"The \"Half a Sixpence\" 2016 London Cast","registered_at":"2026-06-15T02:21:53Z","symbol":"NIM0651901","token_address":"0x8bdc5a5d1f5a9702a30b099c0e285922379968dd","type":"artist","uuid":"d09d1ae4-babf-474e-9be6-b7392611c2ec"}
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 0x32f1bfe4f951997b6aaeca98d8d1292ab0366e8391a98e583430b3bf02b248f4. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d09d1ae4-babf-474e-9be6-b7392611c2ec.json and https://artists.proofprofile.net/proofs/artist/d09d1ae4-babf-474e-9be6-b7392611c2ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0x32f1bfe4f951997b6aaeca98d8d1292ab0366e8391a98e583430b3bf02b248f4","name":"The \"Half a Sixpence\" 2016 London Cast","registered_at":"2026-06-15T02:21:53Z","symbol":"NIM0651901","token_address":"0x8bdc5a5d1f5a9702a30b099c0e285922379968dd","type":"artist","uuid":"d09d1ae4-babf-474e-9be6-b7392611c2ec"}
album: Half a Sixpence (2016 London Cast Recording)
  type: MusicAlbum
  date published: 2017-02-03