Frank Denny De Vol (September 20, 1911 – October 27, 1999), sometimes credited mononymously as De Vol, was an American composer, bandleader, arranger, and actor. As a film composer, he was nominated f
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 0x454cebd9587920011b32b93eaeda2165d1ef7ed455939af0adae6a23159d52ed. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5ac0672-78c0-4538-a3bc-51b58216ec11.json and https://artists.proofprofile.net/proofs/artist/d5ac0672-78c0-4538-a3bc-51b58216ec11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).