Hans Dupont (Maastricht)
type: MusicGroup
popularity: 18
followers: 174
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x00980007d3426f341620238a55c5b3dcba666e8fb6dd1ec0631a5fa98fbdff2e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953750
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953750
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac438723-b18f-46a1-8984-2dc1c63cd4f1.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ac438723-b18f-46a1-8984-2dc1c63cd4f1.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ac438723-b18f-46a1-8984-2dc1c63cd4f1
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T06:12:23Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x00980007d3426f341620238a55c5b3dcba666e8fb6dd1ec0631a5fa98fbdff2e","name":"Hans Dupont (Maastricht)","registered_at":"2026-06-14T22:37:15Z","symbol":"NIM0598230","token_address":"0x7b0245051714e8a46af21530d10dad1da0a2bfe2","type":"artist","uuid":"ac438723-b18f-46a1-8984-2dc1c63cd4f1"}
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 0x00980007d3426f341620238a55c5b3dcba666e8fb6dd1ec0631a5fa98fbdff2e. Chain 2 (Bitcoin): anchored in block 953750 (2026-06-15T06:12:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac438723-b18f-46a1-8984-2dc1c63cd4f1.json and https://artists.proofprofile.net/proofs/artist/ac438723-b18f-46a1-8984-2dc1c63cd4f1.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T06:12:23Z
  text: {"copyright_id":"0x00980007d3426f341620238a55c5b3dcba666e8fb6dd1ec0631a5fa98fbdff2e","name":"Hans Dupont (Maastricht)","registered_at":"2026-06-14T22:37:15Z","symbol":"NIM0598230","token_address":"0x7b0245051714e8a46af21530d10dad1da0a2bfe2","type":"artist","uuid":"ac438723-b18f-46a1-8984-2dc1c63cd4f1"}