John Banner (born Johann Banner, January 28, 1910 – January 28, 1973) was an Austrian-born American actor, best known for his role as Sergeant Schultz in the situation comedy Hogan's Heroes (1965–1971
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 0xeffa7df84ef39df18833e0285d2dc1a9d8ae28e35f43124d8e53cf66a36f9648. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89359979-9829-4ba7-ae41-75b151ce8076.json and https://artists.proofprofile.net/proofs/artist/89359979-9829-4ba7-ae41-75b151ce8076.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).