Piet en Frans
type: MusicGroup
genre: polka
popularity: 3
followers: 15
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf09b9748264361848515acbde162011570495e0538097c966511d6232a950b8f
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954058
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954058
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44c76c6d-448c-457b-a3a6-506b9c0632b9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/44c76c6d-448c-457b-a3a6-506b9c0632b9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/44c76c6d-448c-457b-a3a6-506b9c0632b9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T06:34:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf09b9748264361848515acbde162011570495e0538097c966511d6232a950b8f","name":"Piet en Frans","registered_at":"2026-06-16T13:32:56Z","symbol":"NIM1067440","token_address":"0x9ebd1315ffd6ef2868c178b6483ded9cc1195500","type":"artist","uuid":"44c76c6d-448c-457b-a3a6-506b9c0632b9"}
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 0xf09b9748264361848515acbde162011570495e0538097c966511d6232a950b8f. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44c76c6d-448c-457b-a3a6-506b9c0632b9.json and https://artists.proofprofile.net/proofs/artist/44c76c6d-448c-457b-a3a6-506b9c0632b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T06:34:31Z
  text: {"copyright_id":"0xf09b9748264361848515acbde162011570495e0538097c966511d6232a950b8f","name":"Piet en Frans","registered_at":"2026-06-16T13:32:56Z","symbol":"NIM1067440","token_address":"0x9ebd1315ffd6ef2868c178b6483ded9cc1195500","type":"artist","uuid":"44c76c6d-448c-457b-a3a6-506b9c0632b9"}