Benjamin Winkler (May 25, 1902 – February 22, 1979) was an American sound engineer and recordist in the U.S. film industry having some 135 credits to his name. Born in The Bronx, New York. His film cr
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 0x5fd57974f222d772218b06329deb3b9e052ce0ae397ff5c4dee6bc695c56dded. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15609dd6-338b-42c7-8532-b14ef87fa51b.json and https://artists.proofprofile.net/proofs/artist/15609dd6-338b-42c7-8532-b14ef87fa51b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).