thumb|Kai Hermann photographed by Oliver Mark in Hamburg, 2016 Kai Hermann (born 29 January 1938) is a German journalist,Literauratlas: Kai Hermann , accessed 17 August 2010 who contributed to the m
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 0x20ee8dbc42c6af91c8e6f3b265fa5972c6708c882a95dd0fdc97b4c1b7cd0412. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2d9e6ed-46ca-4a59-9a14-2f0eee4cd766.json and https://artists.proofprofile.net/proofs/artist/d2d9e6ed-46ca-4a59-9a14-2f0eee4cd766.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).