thumb|upright=1.35|Gaul , on the eve of the Gallic Wars. The Romans divided Gaul into five parts: Gallia Celtica (largely corresponding to the later province Gallia Lugdunensis), Gallia Belgica, Galli
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 0xef4212847f8c38f304cbbd0b195d55df13026d1bcf2c533d6ae0c1bf513245c4. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/602d2064-fd1a-43b9-8bbf-27a3937461d4.json and https://artists.proofprofile.net/proofs/artist/602d2064-fd1a-43b9-8bbf-27a3937461d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).