Ockje Nooy van der Kolff
type: MusicGroup
popularity: 17
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0bf930ab7113b8db5a7f7764fd3efa0cc795fb2030d16bbba755a90b82d2fae5
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953612
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953612
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16b40733-ea38-40d1-96c4-d415a7d72740.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/16b40733-ea38-40d1-96c4-d415a7d72740.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/16b40733-ea38-40d1-96c4-d415a7d72740
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T08:22:11Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0bf930ab7113b8db5a7f7764fd3efa0cc795fb2030d16bbba755a90b82d2fae5","name":"Ockje Nooy van der Kolff","registered_at":"2026-06-14T06:47:14Z","symbol":"NIM0371621","token_address":"0xc01da57c6474b5135f9fdea62d80a7f25fa4999b","type":"artist","uuid":"16b40733-ea38-40d1-96c4-d415a7d72740"}
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 0x0bf930ab7113b8db5a7f7764fd3efa0cc795fb2030d16bbba755a90b82d2fae5. Chain 2 (Bitcoin): anchored in block 953612 (2026-06-14T08:22:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16b40733-ea38-40d1-96c4-d415a7d72740.json and https://artists.proofprofile.net/proofs/artist/16b40733-ea38-40d1-96c4-d415a7d72740.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T08:22:11Z
  text: {"copyright_id":"0x0bf930ab7113b8db5a7f7764fd3efa0cc795fb2030d16bbba755a90b82d2fae5","name":"Ockje Nooy van der Kolff","registered_at":"2026-06-14T06:47:14Z","symbol":"NIM0371621","token_address":"0xc01da57c6474b5135f9fdea62d80a7f25fa4999b","type":"artist","uuid":"16b40733-ea38-40d1-96c4-d415a7d72740"}