The XRP Ledger Foundation is preparing quantum-resistant accounts using the ML-DSA-44 signature standard, approved by the U.S. National Institute of Standards and Technology in 2024. Account owners will be able to register a new key, disable the classical key, and retain their address and funds without an increase in the base fee. Each post-quantum key and signature will occupy 3,732 bytes, compared with 105 bytes for a standard payment, bringing estimated storage for each protected transaction to about 5,331 bytes. Network testing and the migration study are planned for the first half of 2027, while Ripple is targeting a full transition by 2028.
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