Sir Charles George Latham (26 January 1882 – 26 August 1968), often shortened to simply C. G. Latham, was an Australian politician, former leader of the opposition in Western Australia and the 10th Pr
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 0xb0fe6b9130bd9b48253d375950fa73f284b7596e26ca60fd9714f6861c98543e. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/68839732-9d02-4c3c-8774-32a73c95f76a.json and https://artists.proofprofile.net/proofs/artist/68839732-9d02-4c3c-8774-32a73c95f76a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best of Charles Latham, Volume 1: 2003 - 2007