thumb|Sugars (clockwise from top-left): white refined, unrefined, brown, unprocessed cane sugar Sugar () is a class of sweet-tasting, soluble carbohydrates, many of which are used in food. Simple su
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 0xd39cd6cf795f402586ef91258f3cfe727f4793ff42bd8d69fa8cf2fbf47a9a76. Chain 2 (Bitcoin): anchored in block 954502 (2026-06-20T05:07:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c0ff2c6-f3fd-4502-bce2-630c089945be.json and https://artists.proofprofile.net/proofs/artist/9c0ff2c6-f3fd-4502-bce2-630c089945be.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).