John Marston is a character in the Red Dead video game series by Rockstar Games. He is the main playable protagonist of the 2010 video game Red Dead Redemption, wherein he must deal with the decline o
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 0x1279c9b9902f6574e455dba87fa1d2d1f0c3e28071afa4bd57b853b78d423cd8. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d85d29bc-28e8-4e4d-8a01-95c48abbb34e.json and https://artists.proofprofile.net/proofs/artist/d85d29bc-28e8-4e4d-8a01-95c48abbb34e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).