Big Ben is the nickname for the Great Bell of the Great Clock of Westminster, and, by extension, for the clock tower which stands at the north end of the Palace of Westminster in London, England.Fowle
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 0xa021f785c40b3f6704276651af28f8e020417d0569aaf966c7084c3c5ee35d34. Chain 2 (Bitcoin): anchored in block 954134 (2026-06-17T19:41:05Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7d5dd06c-e2da-426b-ab31-9839f6013e1c.json and https://artists.proofprofile.net/proofs/artist/7d5dd06c-e2da-426b-ab31-9839f6013e1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).