Ripple Unveils Post-Quantum Roadmap for XRP Ledger Ahead of 'Q-Day'
Ripple has unveiled a strategy to ready the XRP Ledger (XRPL) for the anticipated 'Q-Day,' a moment when quantum computing may jeopardize blockchain security. Announced on April 20, 2026, this initiative seeks to achieve comprehensive post-quantum preparedness by 2028, focusing on aspects such as usability, performance, storage, cryptography, and protocol design. The urgency stems from research by Google Quantum AI in March 2026, which suggested that breaching secp256k1 could necessitate 1,200 logical qubits. The roadmap consists of four stages: readiness, testing in H1 2026, a hybrid rollout in H2 2026, and a transition in 2028. Ayo Akinyele emphasized the need to adapt financial systems ahead of quantum risks. The XRP Ledger utilizes secp256k1 and Ed25519 keys, with previously active accounts being at greater risk.
Key facts
- Ripple announced post-quantum readiness roadmap for XRP Ledger on April 20, 2026.
- Target for full readiness is no later than 2028.
- Google Quantum AI research in March 2026 estimated quantum attack on secp256k1 could require 1,200 logical qubits and 90 million Toffoli gates.
- XRPL currently supports secp256k1 and Ed25519 keys.
- Four phases: quantum-day readiness, H1 2026 testing, H2 2026 hybrid rollout, 2028 full transition.
- NIST approved first three post-quantum standards on August 13, 2024: FIPS 203, 204, 205.
- Ethereum has post-quantum research team targeting 2029 for core infrastructure protection.
- Anthropic's Claude Mythos Preview reduced HAWK-256 difficulty from 2^64 to 2^38 in July 2026.
Entities
Institutions
- Ripple
- XRP Ledger
- Google Quantum AI
- NIST
- Ethereum Foundation
- Project Eleven
- Anthropic
- CoinDesk
- NFT Plazas