Leroy Vinnegar (July 13, 1928 – August 3, 1999) was an American jazz bassist. Born in Indianapolis, the self-taught Vinnegar established his reputation in Los Angeles during the 1950s and 1960s. His t
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 0x2810228c3e2db081e4e2fbbc7d68e5a83695fcb9dec9aef33acc42fc51d22cea. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e054b943-8bc7-40c6-b77e-351246217ab3.json and https://artists.proofprofile.net/proofs/artist/e054b943-8bc7-40c6-b77e-351246217ab3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).