Hans Peter Roel
type: MusicGroup
popularity: 17
followers: 428
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xc237cb4cf80a4790e3ae05980d591d43ca9e822950f2a8ce0330ae69df04ad10
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953697
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953697
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5272f59f-aa3f-4251-9e77-752317e4374e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5272f59f-aa3f-4251-9e77-752317e4374e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5272f59f-aa3f-4251-9e77-752317e4374e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T21:49:28Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xc237cb4cf80a4790e3ae05980d591d43ca9e822950f2a8ce0330ae69df04ad10","name":"Hans Peter Roel","registered_at":"2026-06-14T13:10:03Z","symbol":"NIM0462942","token_address":"0x83e81154a02375e50e6c2f253410555efdc9aab0","type":"artist","uuid":"5272f59f-aa3f-4251-9e77-752317e4374e"}
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 0xc237cb4cf80a4790e3ae05980d591d43ca9e822950f2a8ce0330ae69df04ad10. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5272f59f-aa3f-4251-9e77-752317e4374e.json and https://artists.proofprofile.net/proofs/artist/5272f59f-aa3f-4251-9e77-752317e4374e.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-14T21:49:28Z
  text: {"copyright_id":"0xc237cb4cf80a4790e3ae05980d591d43ca9e822950f2a8ce0330ae69df04ad10","name":"Hans Peter Roel","registered_at":"2026-06-14T13:10:03Z","symbol":"NIM0462942","token_address":"0x83e81154a02375e50e6c2f253410555efdc9aab0","type":"artist","uuid":"5272f59f-aa3f-4251-9e77-752317e4374e"}
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  type: MusicAlbum
  date published: 2018-05-24
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