Pizza checkout / marketplace preflight
Both sides verify before the order, task, or payment.
A read-only demo for the pizza-and-beer problem and the OKX-style marketplace problem. It checks public agent identity now, marks wallet-control and age proof boundaries clearly, and produces a receipt hash without moving funds.
Pizza + beer
customer checks vendor, vendor checks age
Default preset uses Sander’s real registered agent #517 as the vendor-like counterparty and Gregers #40 as the customer-side demo agent.
Marketplace
wallet A verifies wallet B
The same evidence model maps to task funding, x402 payments, escrow release, and agent-to-agent service provider checks.
Build two-party receipt
Machine-readable receipt
No receipt built yet.