Nudnik is a 1965 Czechoslovak animated short film series directed by Gene Deitch, produced by William Lawrence Snyder, and distributed by Paramount Studios. Twelve shorts were released during 1965 and
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 0x8d23168ba4f06c0d1b56f2eac520fa18e04e6621c0997f9039b37cedf438bf73. 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/2f040c36-243a-4310-a772-9c5ccfdb9e55.json and https://artists.proofprofile.net/proofs/artist/2f040c36-243a-4310-a772-9c5ccfdb9e55.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).