Lieutenant Commander Steven P. Cass is a British Royal Navy officer. From 2013 to 2017, he was the Warrant Officer of the Naval Service (now Warrant Officer of the Royal Navy) and, therefore, the most
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 0x5bbc0051a394004d97f5f5a7b8293e1cf29654248f584ad92f922b74c7c623ce. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/413d3eaa-d5d3-4047-a0a9-e3c445791b9a.json and https://artists.proofprofile.net/proofs/artist/413d3eaa-d5d3-4047-a0a9-e3c445791b9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).