Joop Celis
type: MusicGroup
genre: classical piano
genre: minimalism
popularity: 4
followers: 102
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb7416a394a72eac46b92f5c6c722ce1952891cc62fead6e01944827700d81827
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954717
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954717
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44d0414-2b3f-4058-ace4-f4831f579cac.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/f44d0414-2b3f-4058-ace4-f4831f579cac.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/f44d0414-2b3f-4058-ace4-f4831f579cac
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T15:47:51Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb7416a394a72eac46b92f5c6c722ce1952891cc62fead6e01944827700d81827","name":"Joop Celis","registered_at":"2026-06-21T14:34:40Z","symbol":"NIM1948314","token_address":"0xcc101bab44aee26a10a57845a64ce19654238c28","type":"artist","uuid":"f44d0414-2b3f-4058-ace4-f4831f579cac"}
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7416a394a72eac46b92f5c6c722ce1952891cc62fead6e01944827700d81827. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f44d0414-2b3f-4058-ace4-f4831f579cac.json and https://artists.proofprofile.net/proofs/artist/f44d0414-2b3f-4058-ace4-f4831f579cac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T15:47:51Z
  text: {"copyright_id":"0xb7416a394a72eac46b92f5c6c722ce1952891cc62fead6e01944827700d81827","name":"Joop Celis","registered_at":"2026-06-21T14:34:40Z","symbol":"NIM1948314","token_address":"0xcc101bab44aee26a10a57845a64ce19654238c28","type":"artist","uuid":"f44d0414-2b3f-4058-ace4-f4831f579cac"}
album: Ravel - Franck - Faure - Debussy: French Piano Music
  type: MusicAlbum
  date published: 2016-08-17
album: Ravel & Debussy: Transcriptions for Two Pianos
  type: MusicAlbum
  date published: 2020-02-21