The QRL Foundation is an organization dedicated to advancing post-quantum secure blockchain technology. It supports and develops the Quantum Resistant Ledger (QRL), a blockchain designed to withstand potential threats posed by quantum computing. The QRL leverages a post-quantum secure signature scheme called XMSS (eXtended Merkle Signature Scheme) to ensure long-term security and data integrity. By focusing on innovative cryptographic research and development, the foundation aims to provide a secure and sustainable blockchain solution.