Zenk is a surname. Notable people with the surname include: Colleen Zenk (born 1953), American actress Hans-Joachim Zenk (born 1952), German sprinter Tom Zenk (born 1958), American professional wrest
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 0x59e22bcb1290ffb61fd2fb1b16d07c8fcf09b44974e25ee19d4cf21676a8bd62. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4571adf1-2018-4f4c-82a7-6778d0b43907.json and https://artists.proofprofile.net/proofs/artist/4571adf1-2018-4f4c-82a7-6778d0b43907.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).