XRP Ledger Foundation Roadmap Proposes Post-Quantum Signature Scheme

On November 10, according to the protocol roadmap published by the XRP Ledger Foundation, the Foundation has included the post-quantum signature scheme in the proposed 2027 amendments, planning to introduce the ML-DSA-44 signature algorithm to enable accounts to migrate to post-quantum keys.

The roadmap indicates that the scheme remains in the proposal stage, with migration research scheduled for the first half of 2027, and development, review, and auditing planned for late 2027 or 2028. The new keys and signatures are substantially larger than current schemes, and the final activation of the amendment will still require validator voting.