Helmar Rudolf Willi Weitzel (born December 13, 1972, in Marburg, Germany) is a German television presenter, journalist and film producer. He moderated the television programs Willi wills wissen and Wi
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 0x9272b9615184d4692515f035840bbefade1700fd2b5d98d9fc290c619bb3b13f. 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/bc0f3c71-a250-49cf-bd5f-3d65832a1372.json and https://artists.proofprofile.net/proofs/artist/bc0f3c71-a250-49cf-bd5f-3d65832a1372.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peter, Paula und der Wolf (nach Sergei Prokofjew)