The besra (Tachyspiza virgata), also called the besra sparrowhawk, is a bird of prey in the family Accipitridae. It was formerly placed in the genus Accipiter. The name "besra" is from the Hindi word
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 0xc321844c55420479dd496c586991b5e9a1bdaae8649ff254d6e5dcf52a4aa196. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e044f1ec-4983-40ad-82f6-13ac90dd4bcf.json and https://artists.proofprofile.net/proofs/artist/e044f1ec-4983-40ad-82f6-13ac90dd4bcf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).