Brad Kavanagh is an English actor and musician from Whitehaven, Cumbria. He is a guitarist, songwriter, and singer for the English band FLYNT. Kavanagh was part of the original cast of Billy Elliott
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 0xbbc1a447c12f078f89bd65e299ce2e982ad90799b5b66601d5ade395c9b0032c. Chain 2 (Bitcoin): anchored in block 954553 (2026-06-20T11:51:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aca4fba3-722a-45c7-b8a3-c7baf9d7be7e.json and https://artists.proofprofile.net/proofs/artist/aca4fba3-722a-45c7-b8a3-c7baf9d7be7e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).