Three Models, One Ledger: A Live Multi-Model Witness Protocol over MCP

Witness AI work across Claude, GPT, and Gemini. See real-time attestation and how disagreements are handled before sealing into an append-only ledger.

MCP Claude GPT Gemini Supabase

Overview

A three-model witness protocol: to verify a piece of AI-assisted work, the same proof is sent to Claude, GPT, and Gemini independently over MCP, and it only seals into an append-only ledger when they agree. Live, I’ll fire a witness request from my phone, show all three models attest in real time, and watch the record seal into the vault — the payloads, the disagreement handling, and the actual database row. No slides.

Links

Tech stack