thumb|A teaching material in Ashikaga Gakko (Japan) to teach students the importance of moderations. The cup is inclined when it's empty. When you pour water into it, it goes upright. If you pour more
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 0xc84f961c4ea65a952af4e15c1a84ee85b6c3689b849914d327ee9b5807ac3fb8. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/032b575b-abaa-447b-8e3e-549139487331.json and https://artists.proofprofile.net/proofs/artist/032b575b-abaa-447b-8e3e-549139487331.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).