thumb|Panellus stipticus, Mt. Vernon, Wisconsin (long exposure)thumb|right|Omphalotus olearius thumb|right|Omphalotus nidiformis, glowing in the dark thumb|right|Artificial fill light contrasts agai
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 0x2a0ac67f9d072eb2d5919ec9353907e69f3110024e55d99ac7b3e2db5d28e10c. Chain 2 (Bitcoin): anchored in block 953978 (2026-06-16T17:11:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b778258-d3b2-4ab6-bbd5-4afe99c9f94e.json and https://artists.proofprofile.net/proofs/artist/2b778258-d3b2-4ab6-bbd5-4afe99c9f94e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).