Blockchain currencies like Bitcoin present both opportunities and risks for users. While over 200,000 retailers now accept Bitcoin, issues with loss of confidence in currency exchanges remain. A proposed solution is a decentralized currency exchange that allows for direct, trustless transactions between parties using blockchain technology to securely confirm exchanges without the possibility of fraud. This new exchange called MetaLair aims to be the first to enable direct and trustless exchange of different cryptocurrencies based on years of research by experts in security and financial systems.