Heinrich Eduard Otto Schumann (11 September 1886 – 8 November 1952) was a German military officer in the German Empire and a police official in the Weimar Republic. He became an SS-Gruppenführer and G
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 0x3e33521b90e43d3ed88a8dee5a6d64250f81c2950f4318954e9d929813dee943. Chain 2 (Bitcoin): anchored in block 953879 (2026-06-16T02:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/09f7bc2b-1828-42cb-ac6e-49029b0e5289.json and https://artists.proofprofile.net/proofs/artist/09f7bc2b-1828-42cb-ac6e-49029b0e5289.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).