XRP Ledger’s Quantum-Safe Account Plan Targets Stronger Security Without a Fee Penalty

The XRP Ledger’s path toward quantum-resistant security is becoming more concrete, and the design goal is bigger than simply swapping one cryptographic algorithm for another.

Developers are working toward an account model that can support post-quantum signatures without imposing an extra fee category on users. The proposal centers on ML-DSA-44, a standardized signature scheme designed to withstand the kind of attacks that a sufficiently powerful quantum computer could eventually make possible.

The XRP Ledger Foundation’s protocol roadmap describes the work as a draft post-quantum signature system that would let accounts move away from today’s elliptic-curve signatures before the threat becomes urgent. The roadmap also makes clear that the change is technically heavy: post-quantum keys and signatures are far larger, affecting transaction size, multisigning, validator messages and other parts of the network.

Quantum computing poses a serious threat to the cryptography blockchains currently rely on, while advances in AI compress best estimates for the threat's timeline.

That's why experts gathered in Cambridge to coordinate research upgrading our cryptography to be quantum-resistant. pic.twitter.com/VHGbEO3l7p

— Ethereum (@ethereum) October 31, 2026

The fee point matters for XRP’s competitive position. The ledger has long marketed low-cost settlement as a core advantage.

A quantum-safe path that required a separate premium fee would create friction for wallets, exchanges and payment applications. The current design instead treats the larger signature as transaction data within the existing fee framework, preserving the basic model even though larger transactions naturally consume more network resources.

Mainnet has no quantum-resistant account feature today. The proposal remains a draft, and the roadmap points to further migration study, development, review and audit work extending into late 2027 or 2028.

Ripple has separately targeted full post-quantum readiness by 2028, with testing designed to run alongside existing systems before any broad transition.

Ripple’s published roadmap says the ledger’s native key-rotation capability provides an important foundation because an account can move to a new signing key without changing the account itself. That matters in a migration: wallets and custody providers could update the cryptography protecting an established account without forcing every holder onto a new address.

Ripple is testing hybrid signing so existing and post-quantum protections can operate alongside each other during the transition. Its work also covers validator behavior, Devnet performance and a post-quantum custody prototype rather than treating signatures as an isolated software change.

The stated 2028 readiness target is therefore a program of staged testing, integration and ecosystem preparation—not a claim that quantum-safe accounts are already available on Mainnet. Wallet support, custody tooling and validator adoption still have to line up before users can rely on the new scheme in production.

That broader scope is why the current draft is an early engineering milestone rather than an immediate migration notice.

We're constantly improving the @XRP Ledger.

Since XRPL 3.3.0, we've reduced memory consumption by up to 23% on nodes.

A two-part deep dive by RippleX Core Engineer @Cyber_V71 on how this was achieved. pic.twitter.com/TcJvhXjGRx

— XRP Ledger Foundation (@XRPLF) November 5, 2026

For XRP holders, the distinction between a design and a live amendment is essential. No Mainnet migration is required today, and no quantum-resistant account type has been activated.

The milestones to watch are a finalized standard, a production implementation, validator approval and wallet or custody support.

The work is still early, but it is no longer theoretical. XRP Ledger engineers are mapping out how quantum-safe accounts could operate without giving up the low-cost experience the network is built around.

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