Joop de Knecht
type: MusicGroup
genre: nederpop
popularity: 5
followers: 282
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x26fdd1a77517cb74ffa2cf70f1e7fb1f14f95db9993ad8f5a918401a5d724c30
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953930
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953930
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dd54139-4834-4451-a51e-8708fca574ba.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1dd54139-4834-4451-a51e-8708fca574ba.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1dd54139-4834-4451-a51e-8708fca574ba
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T10:36:13Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x26fdd1a77517cb74ffa2cf70f1e7fb1f14f95db9993ad8f5a918401a5d724c30","name":"Joop de Knecht","registered_at":"2026-06-16T00:13:22Z","symbol":"NIM0876561","token_address":"0x42a0b300be676e82b8ab021cb489721bad065946","type":"artist","uuid":"1dd54139-4834-4451-a51e-8708fca574ba"}
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 0x26fdd1a77517cb74ffa2cf70f1e7fb1f14f95db9993ad8f5a918401a5d724c30. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dd54139-4834-4451-a51e-8708fca574ba.json and https://artists.proofprofile.net/proofs/artist/1dd54139-4834-4451-a51e-8708fca574ba.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
  text: {"copyright_id":"0x26fdd1a77517cb74ffa2cf70f1e7fb1f14f95db9993ad8f5a918401a5d724c30","name":"Joop de Knecht","registered_at":"2026-06-16T00:13:22Z","symbol":"NIM0876561","token_address":"0x42a0b300be676e82b8ab021cb489721bad065946","type":"artist","uuid":"1dd54139-4834-4451-a51e-8708fca574ba"}