Michael Willemsen
type: MusicGroup
popularity: 2
followers: 216
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x419420a40acda0e75845600df89d2270f239d153c09e46133d1ddac366de1d76
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60302b00-1235-4623-85b2-bf30e9552218.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/60302b00-1235-4623-85b2-bf30e9552218.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/60302b00-1235-4623-85b2-bf30e9552218
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x419420a40acda0e75845600df89d2270f239d153c09e46133d1ddac366de1d76","name":"Michael Willemsen","registered_at":"2026-06-16T23:05:53Z","symbol":"NIM1204150","token_address":"0x4e42a9ecafec29afd189f4d070adaee200de52bb","type":"artist","uuid":"60302b00-1235-4623-85b2-bf30e9552218"}
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 0x419420a40acda0e75845600df89d2270f239d153c09e46133d1ddac366de1d76. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60302b00-1235-4623-85b2-bf30e9552218.json and https://artists.proofprofile.net/proofs/artist/60302b00-1235-4623-85b2-bf30e9552218.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x419420a40acda0e75845600df89d2270f239d153c09e46133d1ddac366de1d76","name":"Michael Willemsen","registered_at":"2026-06-16T23:05:53Z","symbol":"NIM1204150","token_address":"0x4e42a9ecafec29afd189f4d070adaee200de52bb","type":"artist","uuid":"60302b00-1235-4623-85b2-bf30e9552218"}
album: Vol Verlangen
  type: MusicAlbum
  date published: 2020-07-27
album: Ik heb er alles aan gedaan
  type: MusicAlbum
  date published: 2020-11-27
album: Uitgewist
  type: MusicAlbum
  date published: 2021-02-25
album: Nou en
  type: MusicAlbum
  date published: 2021-08-05
album: Waar ben je nou
  type: MusicAlbum
  date published: 2021-11-25
album: Bij jou
  type: MusicAlbum
  date published: 2022-08-19
album: Geef mij eens antwoord op mijn vragen
  type: MusicAlbum
  date published: 2023-06-12
album: Nu Jij Hier Niet Meer Bent
  type: MusicAlbum
  date published: 2024-10-18