Mark Gilbert McKinney, known professionally as Gil McKinney, (born February 5, 1979) is an American film and television actor."Supernatural Casting News: Gil McKinney to Portray Grandpa Winchester". D
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 0x524bdb5f869245a96d6eb37be6449cfd6c0ab2e034eeda9853ebab6735c171bd. Chain 2 (Bitcoin): anchored in block 953762 (2026-06-15T08:21:23Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b7e740ea-690b-4695-9924-205d8ff4e733.json and https://artists.proofprofile.net/proofs/artist/b7e740ea-690b-4695-9924-205d8ff4e733.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).