thumb|right|300px|Painted 17th century Tibetan 'Five Deity Mandala', in the center is Rakta Yamari (the Red Enemy of Death) embracing his consort Vajra Vetali, in the corners are the Red, Green White
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 0x9a64b3cfc78aba00fe38f1deb3ecad85151cca9596d0187f1ab84e46d83f64b5. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f12a1070-f992-4dd1-a4f4-e14385331f32.json and https://artists.proofprofile.net/proofs/artist/f12a1070-f992-4dd1-a4f4-e14385331f32.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).