Phase 1 addresses the worst case. XRPL developers intend to execute a fallback path so that users can safely move their funds if classical cryptography breaks. The team is already exploring the use of zero-knowledge proofs so that users can prove ownership in such cases.
Phase 2 is slated for the first half of 2026, which means it is already underway. This phase involves proactive planning and experimentation of NIST-recommended quantum-resistant signature schemes against XRPL’s transaction model.
Phase 3, planned for the second half of 2026, will involve the exploration of post-quantum primitives. This will involve the deployment of candidate post-quantum signatures alongside existing elliptic curve signatures on Devnet for developer testing without touching the mainnet.
Finally, phase 4 will involve a formal amendment to the XRPL ecosystem for native post-quantum cryptography and transitioning the network to quantum-resistant signatures at scale, targeting full deployment by 2028.
The Threat Is No Longer TheoreticalAccording to J. Ayo Akinyele, the the network’s transition to post-quantum readiness is a fundamental architectural shift in how digital assets are secured over the long term. This transition will change key management, validator infrastructure, and how users engage with the XRP ecosystem.
