Lt.-Colonel The Hon. William McGillivray (1764 – 16 October 1825) was a Scottish-born Canadian fur trader. He succeeded his uncle Simon McTavish as the last chief partner of the North West Company unt
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 0x593bac7611787c0d9a90b92b057480538837f0f2834554fc06e12080cfdedee0. Chain 2 (Bitcoin): anchored in block 953947 (2026-06-16T13:14:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/229dff20-a76e-475b-9224-8a1250a50c43.json and https://artists.proofprofile.net/proofs/artist/229dff20-a76e-475b-9224-8a1250a50c43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).