Ann Heymann
type: MusicGroup
genre: celtic
popularity: 9
followers: 200
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc54aadd06cde7b0414bdb63546322440db6af1168295aba5ec17546407d5d5fc
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953911
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953911
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f06564-4841-4894-b087-d1834a5bd07d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/18f06564-4841-4894-b087-d1834a5bd07d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/18f06564-4841-4894-b087-d1834a5bd07d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T08:03:10Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc54aadd06cde7b0414bdb63546322440db6af1168295aba5ec17546407d5d5fc","name":"Ann Heymann","registered_at":"2026-06-15T22:14:03Z","symbol":"NIM0848071","token_address":"0x2c560925c2b24236dbe5aa86242b38a0ceba6764","type":"artist","uuid":"18f06564-4841-4894-b087-d1834a5bd07d"}
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 0xc54aadd06cde7b0414bdb63546322440db6af1168295aba5ec17546407d5d5fc. Chain 2 (Bitcoin): anchored in block 953949 (2026-06-16T13:28:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/18f06564-4841-4894-b087-d1834a5bd07d.json and https://artists.proofprofile.net/proofs/artist/18f06564-4841-4894-b087-d1834a5bd07d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T13:28:01Z
  text: {"copyright_id":"0xc54aadd06cde7b0414bdb63546322440db6af1168295aba5ec17546407d5d5fc","name":"Ann Heymann","registered_at":"2026-06-15T22:14:03Z","symbol":"NIM0848071","token_address":"0x2c560925c2b24236dbe5aa86242b38a0ceba6764","type":"artist","uuid":"18f06564-4841-4894-b087-d1834a5bd07d"}
album: Queen Of Harps
  type: MusicAlbum
  date published: 1994