The Albert is a Grade II listed pub located at 52 Victoria Street in Victoria, London, about southwest of Westminster Abbey. Built in 1862 by the Artillery Brewery, the pub retains its striking façad
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 0xe614b58f9d31891c326ad6e48edd07f399322fb0bf9d68de2609380ab2242ba3. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1bfecdb-6137-46e6-bbb4-b63bc1ab7746.json and https://artists.proofprofile.net/proofs/artist/c1bfecdb-6137-46e6-bbb4-b63bc1ab7746.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).