KGV can refer to: George V, King of Britain One of two King George V-class battleship classes (KGV class) King George V-class battleship (1911), a class of four Royal Navy battleships that served
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 0x5a864d18ccd6725a8a5a7e41b87e5148d14d10e4dc64cb1bbc12303f2ee94742. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a63ddc11-9914-4e3d-b7b9-60af86a33ec4.json and https://artists.proofprofile.net/proofs/artist/a63ddc11-9914-4e3d-b7b9-60af86a33ec4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).