Slagerij Janssen
type: MusicGroup
popularity: 24
followers: 697
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe4560e8c88c9f5903995a9f6b8bd8d2d86b5ea9992fb1574752dfbfad247d8a7
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xe4560e8c88c9f5903995a9f6b8bd8d2d86b5ea9992fb1574752dfbfad247d8a7","name":"Slagerij Janssen","registered_at":"2026-06-12T01:25:41Z","symbol":"NIM0156172","token_address":"0x7ba0d6dfa4ec87a37735db60ebb91ecbfddeebff","type":"artist","uuid":"796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc"}
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 0xe4560e8c88c9f5903995a9f6b8bd8d2d86b5ea9992fb1574752dfbfad247d8a7. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc.json and https://artists.proofprofile.net/proofs/artist/796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xe4560e8c88c9f5903995a9f6b8bd8d2d86b5ea9992fb1574752dfbfad247d8a7","name":"Slagerij Janssen","registered_at":"2026-06-12T01:25:41Z","symbol":"NIM0156172","token_address":"0x7ba0d6dfa4ec87a37735db60ebb91ecbfddeebff","type":"artist","uuid":"796129dd-0ae3-4b79-b3d3-e3da8c8fa1bc"}
album: In De Club (Radio Edit)
  type: MusicAlbum
  date published: 2018-02-19
album: In de Club (Uptempo Remix)
  type: MusicAlbum
  date published: 2019-01-01