thumb|A group study area in a university. Study hall, known as private study, SAS, structured study or free periods in the United Kingdom, is a term for a place to have a study time during the school
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 0xa0688aaeb8b9c1ca3f59c4ce36365dd920590cc3ddd91420f2cafa00d26128ab. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b129a14a-4e16-4815-a3c9-98da5cf1510e.json and https://artists.proofprofile.net/proofs/artist/b129a14a-4e16-4815-a3c9-98da5cf1510e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).