William Linton Parrish (August 6, 1860 – February 20, 1949) was a politician in Manitoba, Canada. He served in the Legislative Assembly of Manitoba from 1914 to 1920 as a member of the Liberal Party.
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 0x64548e2f499a1661dd33da56eb21edbfe13fba970fe3a4f7a7b9c0b6f4267da6. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0f712e6-9b3d-413c-8546-89bef0daeb22.json and https://artists.proofprofile.net/proofs/artist/f0f712e6-9b3d-413c-8546-89bef0daeb22.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).