Joris Verdin
type: MusicGroup
popularity: 7
followers: 671
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa69c5049164b90efc2418655c4008b6cae9bd6dd42663793bdcf34b3c097184b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953907
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953907
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/168b34c0-1880-4618-b695-d665eb751c58.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/168b34c0-1880-4618-b695-d665eb751c58.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/168b34c0-1880-4618-b695-d665eb751c58
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T07:39:24Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa69c5049164b90efc2418655c4008b6cae9bd6dd42663793bdcf34b3c097184b","name":"Joris Verdin","registered_at":"2026-06-15T21:28:52Z","symbol":"NIM0837299","token_address":"0x573a9d1f784815b7d5a2ab8aecf4454ca0d38776","type":"artist","uuid":"168b34c0-1880-4618-b695-d665eb751c58"}
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 0xa69c5049164b90efc2418655c4008b6cae9bd6dd42663793bdcf34b3c097184b. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/168b34c0-1880-4618-b695-d665eb751c58.json and https://artists.proofprofile.net/proofs/artist/168b34c0-1880-4618-b695-d665eb751c58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T07:39:24Z
  text: {"copyright_id":"0xa69c5049164b90efc2418655c4008b6cae9bd6dd42663793bdcf34b3c097184b","name":"Joris Verdin","registered_at":"2026-06-15T21:28:52Z","symbol":"NIM0837299","token_address":"0x573a9d1f784815b7d5a2ab8aecf4454ca0d38776","type":"artist","uuid":"168b34c0-1880-4618-b695-d665eb751c58"}
album: Guilmant: Septième sonate
  type: MusicAlbum
  date published: 2009-05-11