thumb|175px|A bottle of Limca. Limca is an Indian multinational brand of lemon- and lime-flavoured carbonated soft drink made primarily in India and certain parts of the U.S. It contains 60 calories
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 0x906fd8c835ec6cdc55bc94869bfd0818ff72101d947ba8ea8ebee45387d4ed17. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4adcc69c-e7a0-401f-823d-fa002cfb708c.json and https://artists.proofprofile.net/proofs/artist/4adcc69c-e7a0-401f-823d-fa002cfb708c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).