Dave may refer to: Arts and entertainment Dave (film), a 1993 film starring Kevin Kline and Sigourney Weaver Dave (musical), a 2018 stage musical adaptation of the 1993 film Dave (TV series), a 20
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3cbf735a0ebab46555a05b1bfe5994bfc88abe82a0bef2d1987670a4d084b. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e799136e-2165-4427-9227-15f7c6442d06.json and https://artists.proofprofile.net/proofs/artist/e799136e-2165-4427-9227-15f7c6442d06.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).