Absolutely Fabulous (often shortened to Ab Fab) is a British television sitcom created and written by Jennifer Saunders, which premiered in 1992. It is based on the 1990 French and Saunders sketch "Mo
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 0x57c7b374fe2be1ce3d9474ee2e396e84553ba3692a1480e0b9a17b9ac43bc8aa. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5cda3dce-3fd6-4e74-b9f3-c023a00627f6.json and https://artists.proofprofile.net/proofs/artist/5cda3dce-3fd6-4e74-b9f3-c023a00627f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).