On April 20, 2026, Ripple officially released the XRP Ledger Post-Quantum Readiness Roadmap, planning to complete by 2028 a comprehensive migration from the current elliptic curve cryptography (ECC) to post-quantum cryptography (PQC). This roadmap, with 2028 as the final completion milestone, includes four phases: emergency contingency plans, algorithm evaluation, hybrid testing, and mainnet upgrades, aiming to address the potential threats quantum computing technology may pose to the foundational security of blockchains. Against the backdrop of breakthrough progress in current quantum computing research, the release of this roadmap marks the start of the blockchain industry examining long-term security risks in a structured way. As of April 21, 2026, the XRP trading price is approximately 1.43 USD, up nearly 9% over the past week, showing a relatively stable price structure amid the broader crypto market rebound. Quantum