TradeLedger

What did you build? TradeLedger — an on-chain honest trade journaling dApp on Monad Testnet. You commit a trade plan (symbol, direction, planned stop/target, the real reason, and your mind-state) to a smart contract BEFORE you trade, then settle the actual PnL and an honest reflection AFTER, gated by a cooldown. Both steps are immutable. What problem does it solve? My own trading journal was a lie: I only logged winners and rewrote the story after the fact. That self-deception is exactly what kills a beginner trader. A private notebook lets you bury the truth; TradeLedger makes the record uneditable, so the chain becomes a mirror you can't negotiate with. What did you learn? Deploying a Solidity contract to Monad Testnet with Hardhat, wiring a React + viem frontend to a live wallet — and that forcing an immutable pre-commit changes behavior. The cooldown between commit and settle is the whole point: you can't fake a result instantly.