Stefan Ahnhem
type: MusicGroup
popularity: 14
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe542ae6888a7ffec41c67b4f81e443885c2ecc0c85253a19e5dabdcf6320fb14
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953817
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953817
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc2706e0-1232-4afc-9e32-338900fef49e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/fc2706e0-1232-4afc-9e32-338900fef49e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/fc2706e0-1232-4afc-9e32-338900fef49e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T18:10:31Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe542ae6888a7ffec41c67b4f81e443885c2ecc0c85253a19e5dabdcf6320fb14","name":"Stefan Ahnhem","registered_at":"2026-06-15T07:02:42Z","symbol":"NIM0718926","token_address":"0xee1648055e257b4b0a6eebeef209c315ce246e7a","type":"artist","uuid":"fc2706e0-1232-4afc-9e32-338900fef49e"}
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 0xe542ae6888a7ffec41c67b4f81e443885c2ecc0c85253a19e5dabdcf6320fb14. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc2706e0-1232-4afc-9e32-338900fef49e.json and https://artists.proofprofile.net/proofs/artist/fc2706e0-1232-4afc-9e32-338900fef49e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T19:59:56Z
  text: {"copyright_id":"0xe542ae6888a7ffec41c67b4f81e443885c2ecc0c85253a19e5dabdcf6320fb14","name":"Stefan Ahnhem","registered_at":"2026-06-15T07:02:42Z","symbol":"NIM0718926","token_address":"0xee1648055e257b4b0a6eebeef209c315ce246e7a","type":"artist","uuid":"fc2706e0-1232-4afc-9e32-338900fef49e"}
album: Mañana te toca a ti
  type: MusicAlbum
  date published: 2019-04-01
album: Motief X (Onverkort)
  type: MusicAlbum
  date published: 2020-06-16
album: De laatste spijker [Fabian Risk, Deel 6 (Onverkort)]
  type: MusicAlbum
  date published: 2021
album: X manieren om te sterven (Onverkort)
  type: MusicAlbum
  date published: 2021-06-24
album: Zonder gezicht [Fabian Risk, Deel 1 (Onverkort)]
  type: MusicAlbum
  date published: 2023-09-08
album: Het negende graf [Fabian Risk, Deel 2 (Onverkort)]
  type: MusicAlbum
  date published: 2023-10-09