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1. Duel-dApp Duel-dApp Public

   Secure Rock–Paper–Scissors dueling system in Solidity using commit-reveal with ETH staking, timeouts, and modular resolution logic. Includes mocks for testing paths

   Solidity

2. keplerian-walkerdelta-propagator keplerian-walkerdelta-propagator Public

   A JavaScript library for two-body Keplerian orbital propagation and Walker Delta constellation generation

   JavaScript

3. OnChainInvoice OnChainInvoice Public

   🧾 OnChainInvoice – Minimal, gas-efficient invoice management smart contract in Solidity. Includes secure ETH payments, invoice cancellation, and withdrawals with full Foundry test coverage (100%) a…

   Solidity

4. crypto-bank crypto-bank Public

   🏦 Solidity-based Ether bank with per-user balance limits, admin controls, and secure withdrawal logic using the CEI pattern. Built for Remix.

   Solidity

5. NFTMarketplace NFTMarketplace Public

   A fully tested, gas-efficient NFT marketplace built with Solidity and Foundry. Supports secure NFT listing, buying, and cancellation with full ownership validation and reentrancy protection. Implem…

   Solidity

6. SwapTokensApp SwapTokensApp Public

   A minimal and secure token swapping interface built in Solidity, integrating with Uniswap V2-compatible routers. Enables users to safely swap ERC20 tokens with parameterized control over slippage, …

   Solidity