thumb|175px|Max Schmidt (before 1880) thumb|285px|Bedouin Encampment Outside Cairo Max Schmidt (23 August 1818 – 8 January 1901) was a German landscape painter. Biography Schmidt was a native of Berl
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 0xc41759d2976de1e68e5acfaa4886a31ca7bc2844c306bb2be67bcc0e4c5ffc40. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1af91e4d-a3ac-4218-a44e-7ae177909f3c.json and https://artists.proofprofile.net/proofs/artist/1af91e4d-a3ac-4218-a44e-7ae177909f3c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).