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
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).
De laatste spijker [Fabian Risk, Deel 6 (Onverkort)]
Zonder gezicht [Fabian Risk, Deel 1 (Onverkort)]
Het negende graf [Fabian Risk, Deel 2 (Onverkort)]