Armando Ochoa

Over-collateralized lending with price-driven liquidations and a live health factor — Solidity + Foundry + Next.js, on Sepolia

Trustless crowdfunding on Ethereum — creator withdraws if goal is met, donors get auto-refund if not

ecrecover doesn't revert on a broken signature — it returns address(0). Two doors, one recovery, and three words of zeros that walk through the one that forgot to check.

The same Chainlink read, guarded and unguarded — break a live feed and watch which one notices. Solidity + Foundry + Next.js on Sepolia

Treasury DAO with snapshot-based voting (ERC20Votes) — immune to the double-vote-by-transfer and flash-loan attacks a balanceOf design allows. Solidity + Foundry + Next.js.

Multi-pool yield farm with MasterChef-style real-time rewards — Solidity + Foundry + Next.js/wagmi, live on Sepolia