Testnet
Build mode: Payment Checks + Explorer only. Currency: Mock USD (mUSD).
Portfolio
This is the starting point for the MVP flow. Users connect wallet → land here → mint checks.
Next: Add an mUSD faucet button here (after wallet connect), then wire approve + mint.
Explorer
Explore checks by serial (curated list + on-chain fallback).
Note: On-chain serial lookup is working. Image rendering can come later.