thumb|upright|Le Dôme Café in Paris, frequented by School of Paris artists during the 1920s and 1930s. Café society was the description of the "Beautiful People" and "Bright Young Things" who gathered
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 0xfbda373da76451f2478d5aafc48ceed3c5cc30283a9add6d1de8d1412fa64d97. 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/d4b7d04f-5c1c-4976-982e-f3faae05e13a.json and https://artists.proofprofile.net/proofs/artist/d4b7d04f-5c1c-4976-982e-f3faae05e13a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).