Ripple Plans to Make XRP Ledger Quantum-Resistant by 2028

Quantum computing could eventually break the elliptic-curve signatures used to authorize blockchain transactions, putting exposed public keys and digital assets at risk. Advances in artificial intelligence and cryptographic research have added urgency to preparations for a so-called “Q-Day.” Ripple is incorporating post-quantum cryptography into the XRP Ledger’s security roadmap, while Bitcoin and Ethereum developers are also outlining migration strategies.

Ripple is preparing defenses before quantum machines become capable of threatening existing signatures, targeting a fully quantum-resistant XRP Ledger by 2028. The work will need to address new signature schemes, migration of existing accounts and compatibility across the network. The timetable shows major blockchains moving from theoretical risk assessment toward engineering plans, though deployment will still require testing, community agreement and phased implementation.