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Ripple published a four-phase roadmap on April 20 aimed at making the XRP Ledger (XRPL) resistant to quantum computing attacks, with Phase 2 testing already underway in partnership with Project Eleven.
The plan includes a Phase 1 “Quantum-Day” contingency designed to immediately block classical signatures and require migration to quantum-safe accounts if current cryptography is compromised ahead of schedule.
Ripple also highlighted XRPL’s native key rotation as a structural advantage for post-quantum migration. The approach is intended to let users update cryptographic keys without moving funds or abandoning accounts, contrasting with systems that may require account migration.
Ripple described its roadmap as the most detailed public post-quantum commitment among major blockchain networks. The company set a 2028 target, but said it is contingent on successful Devnet testing in Phase 3, ecosystem-wide coordination with validators, and passage of a formal network amendment—each of which carries execution risk for the schedule.
In the same week, Coinbase’s cryptography advisory board—featuring Stanford’s Dan Boneh and Ethereum Foundation researcher Justin Drake—published a 50-page analysis warning that post-quantum transitions across blockchains, wallets, and exchanges could take years to complete safely, even after technical standards are established.
Bitcoin developers remain divided between optional opt-in upgrades and more forceful migration measures. Ethereum, meanwhile, is targeting 2029 through a multi-fork roadmap.
XR P traded at $1.42 on April 20 when the announcement was made public. The token rose by approximately 5% intraday on the news before settling back.
On the same day, SoFi separately confirmed that XRP deposits are available for retail users on its platform. However, external wallet withdrawals remain restricted pending further regulatory review.
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