thumb|250px|A wild rabbit – considered a pest by many, due to its destruction of farm crops Vermin (colloquially varmint(s) or varmit(s)) are pests or nuisance animals that spread diseases and destro
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 0x84c526cdc6f7376996fec9f82b792532dc9e9a1c0bde0ac8e9d64b0bcb53743b. Chain 2 (Bitcoin): anchored in block 953860 (2026-06-15T23:55:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/02c813ae-d734-471b-a2b5-2f924b1e9b4f.json and https://artists.proofprofile.net/proofs/artist/02c813ae-d734-471b-a2b5-2f924b1e9b4f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).