thumb|330x330px|Miniature from the Menologion of Basil II depicting the 20,000 Martyrs of Nicomedia, who were martyred when Roman soldiers set their church on fire on Christmas Day, AD 302 A martyr (,
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 0x4ef591fa4b7dcbe307e173150c87c1896edc434cde8c5bc351bfbf1aa692f66a. 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/9768bea6-91aa-4a57-8940-4910348f3424.json and https://artists.proofprofile.net/proofs/artist/9768bea6-91aa-4a57-8940-4910348f3424.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).