Crims is a British television sitcom created by Dan Swimer and Adam Kay. It centres on two men sent to a young offenders' institution after one of them involves the unaware other in a bank robbery. It
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 0x43305e1a32762c0d26b2852ec9dd5dcbf125f91eda38cc07eebb9d60e0473ace. Chain 2 (Bitcoin): anchored in block 953959 (2026-06-16T14:51:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27b67506-e55f-45a4-b181-d61658210044.json and https://artists.proofprofile.net/proofs/artist/27b67506-e55f-45a4-b181-d61658210044.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).