Fred Sherry (born 1948) is an American cellist who is particularly admired for his work as a chamber musician and concert soloist. He studied with Leonard Rose at the Juilliard School before winning 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 0x3d77bbe97c5dbff8e9e797babe62310cd19674b8e7487ec6d710601b70e86c0d. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ac9fb208-0415-4a4b-99c6-8b8cbcbbd3ff.json and https://artists.proofprofile.net/proofs/artist/ac9fb208-0415-4a4b-99c6-8b8cbcbbd3ff.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).