right|thumb|250px|Bust of M.B.Braun in Jaroměř Matthias Bernard Braun (Czech: Matyáš Bernard Braun, 24 February 1684 in Sautens, County of Tyrol – 15 February 1738 in Prague) was a sculptor and carver
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 0xf9899cfa8769eb3daa71029020bfbf748ae4fd9eda3ff5ef1c53a3452deff0a9. Chain 2 (Bitcoin): anchored in block 953694 (2026-06-14T21:38:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e2a5018-9ab6-402f-b656-bdb9427ab703.json and https://artists.proofprofile.net/proofs/artist/6e2a5018-9ab6-402f-b656-bdb9427ab703.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).