Overview
- Ripple published a four-phase roadmap to harden the XRP Ledger on April 20, 2026, with a target of full post‑quantum readiness by 2028.
- Google’s March 2026 Quantum AI finding that about 500,000 physical qubits could break elliptic‑curve keys in minutes has shortened the window for action and raised urgency across blockchains.
- Phase 2 work is under way with Project Eleven and devnet/testnet benchmarks that test NIST‑standard signatures ML‑DSA and Dilithium to measure real XRPL performance.
- Technical and operational challenges include much larger Dilithium signature sizes that can stress throughput and storage, and a governance rule that a mainnet amendment needs over 80% validator support for two weeks to activate.
- Anthropic research showing dramatically reduced work for an attack on the HAWK candidate underscores that algorithm risk can change quickly so XRPL’s migration must be repeatable and ordinary users are not yet asked to move funds.