Sir Sidney Lee (5 December 1859 – 3 March 1926) was an English biographer, writer, and critic. Biography Lee was born Solomon Lazarus Lee in 1859 at 12 Keppel Street, Bloomsbury, London, England. He
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 0x40061a363018498ac9e3304b99e2ff31c80e1587feb351152c24ebbd7433a441. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7270a047-9b17-445b-99f7-62c4c66ba2bc.json and https://artists.proofprofile.net/proofs/artist/7270a047-9b17-445b-99f7-62c4c66ba2bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).