Stefan Janson
type: MusicGroup
popularity: 3
followers: 92
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2fc4c117b304b51654c45d7fb534324d6b8da4ae68265ee748ce7a167a32da51
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954346
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954346
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9718ca3e-c49e-4d24-8136-21ddbc3ccd9e.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9718ca3e-c49e-4d24-8136-21ddbc3ccd9e.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9718ca3e-c49e-4d24-8136-21ddbc3ccd9e
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:51:26Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x2fc4c117b304b51654c45d7fb534324d6b8da4ae68265ee748ce7a167a32da51","name":"Stefan Janson","registered_at":"2026-06-17T18:25:45Z","symbol":"NIM1480788","token_address":"0x2d23030bd06799f34309cec1a7f48f9aa0417b5a","type":"artist","uuid":"9718ca3e-c49e-4d24-8136-21ddbc3ccd9e"}
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 0x2fc4c117b304b51654c45d7fb534324d6b8da4ae68265ee748ce7a167a32da51. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9718ca3e-c49e-4d24-8136-21ddbc3ccd9e.json and https://artists.proofprofile.net/proofs/artist/9718ca3e-c49e-4d24-8136-21ddbc3ccd9e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:51:26Z
  text: {"copyright_id":"0x2fc4c117b304b51654c45d7fb534324d6b8da4ae68265ee748ce7a167a32da51","name":"Stefan Janson","registered_at":"2026-06-17T18:25:45Z","symbol":"NIM1480788","token_address":"0x2d23030bd06799f34309cec1a7f48f9aa0417b5a","type":"artist","uuid":"9718ca3e-c49e-4d24-8136-21ddbc3ccd9e"}