thumb|Depiction of the Battle of Talana Hill in 1899 High ground is an area of elevated terrain, which can be useful in combat. The military importance of the high ground has been recognized for over
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 0x0c2251fd1a1b66f2928f13a05839d9e39659f316cb10f207e90f70e47c9bfcbc. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dd9f8b52-0c65-4b33-a127-486d10a86ebd.json and https://artists.proofprofile.net/proofs/artist/dd9f8b52-0c65-4b33-a127-486d10a86ebd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).