The Grenadier Guards (GREN GDS), with full official title "The 1st or Grenadier Regiment of Foot Guards", is the most senior infantry regiment of the British Army, being at the top of the Infantry Ord
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 0x95a3cb0725bb42a5f145e7065ff7673d2ac117e8d9ea34cafef714e5e74b8311. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/759259fd-9403-40f0-adea-f0918c8c8976.json and https://artists.proofprofile.net/proofs/artist/759259fd-9403-40f0-adea-f0918c8c8976.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).