Bitcoin Cash has unveiled Quantumroot, the first fully implemented post-quantum vault system integrated into Bitcoin Script. Developed by Jason Dreyzehner, this system marks Bitcoin Cash as the first major blockchain to offer a practical and scalable post-quantum security solution. Quantumroot provides a migration path for millions of users to safeguard against potential quantum computing threats. The system utilizes Bitcoin Cash’s UTXO model and CashVM features, resulting in significantly lower fees and enhanced scalability compared to similar systems on other blockchains. This development positions Bitcoin Cash at the forefront of blockchain security innovation, addressing future quantum challenges.