XRP Ledger Foundation roadmap proposes quantum-resistant signature scheme

The XRP Ledger Foundation’s new protocol roadmap places post-quantum signature support among proposed 2027 amendments, introducing the ML-DSA-44 signature algorithm so accounts can migrate to quantum-resistant keys. The plan remains at the proposal stage, with migration research slated for the first half of 2027 and development, review, and auditing targeted for late 2027 or 2028. Because the new keys and signatures are substantially larger than current schemes, the amendment would still require validator voting before activation. The effort matters because it would position XRP Ledger ahead of a broader industry shift toward quantum-resistant cryptography. What to watch next is whether the proposal advances into formal amendment status and how validator support and performance trade-offs from larger signatures shape the timeline.