Brassic is a British comedy-drama television series created by Joe Gilgun and Danny Brocklehurst for Sky One. It premiered on 22 August 2019 and concluded on 30 October 2025, after seven series consis
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 0x9b7f70fb7cc1d20171d79b12bb59cc97820255febf22c699d5b70435f49f4ef2. Chain 2 (Bitcoin): anchored in block 954017 (2026-06-16T23:38:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/362a4659-9589-42b1-84f0-3d5d7cf9c3f7.json and https://artists.proofprofile.net/proofs/artist/362a4659-9589-42b1-84f0-3d5d7cf9c3f7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).