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 0x0f695b27f916f18812f41d6552fa1fb050c53b8a00cf050476ba7a56a99a319b. Chain 2 (Bitcoin): anchored in block 953973 (2026-06-16T16:37:07Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2adec1b2-af79-467f-bb27-3b6cb42e99f4.json and https://artists.proofprofile.net/proofs/artist/2adec1b2-af79-467f-bb27-3b6cb42e99f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
V A G U A L Tetsuo (m e r m i r a c l e b l e u s u r l e s y e u x)