Project Eleven Is Securing The XRP Ledger Against Quantum Threats

A Concrete Engineering Push, Not a Research Exercise

@ProjectEleven and @Ripple have announced a formal partnership to prepare the $XRP Ledger for the post-quantum era. The collaboration will focus on auditing the XRP Ledger's validator, custody, wallet, and networking systems while developing quantum-resistant infrastructure and hybrid cryptographic signature systems.

The partnership aims to produce working code, performance testing, and production-ready security tools, including a quantum-secure custodial wallet prototype for institutional infrastructure.

The XRP Ledger Foundation noted that the network's native architecture simplifies the migration process. Because the XRPL utilises an account-based system with built-in key rotation, network participants will be able to upgrade to quantum-resistant signatures without needing to change their existing public addresses.

Project Eleven CEO Alex Pruden noted that much of the work on quantum risk in the blockchain sector remains in the research phase, and that Ripple is treating this issue as a practical engineering problem. RippleX Engineering Director Ayo Akinyele argued that the quantum threat is no longer just theoretical, pointing to existing infrastructure advantages such as key rotation and large-scale validator coordination. "Our goal is not to react when Q-Day arrives, but to be ready for production before the need arises," he said.

Racing Ahead of Government Deadlines

Ripple is introducing a multi-phase roadmap to prepare the XRP Ledger for a post-quantum future, with a target for full readiness by 2028. That schedule puts the network well ahead of broader regulatory timelines. The US government aims to phase out quantum-vulnerable encryption methods in federal systems by 2035, while technology companies like Google and Cloudflare plan to transition to post-quantum security standards in their own systems by 2029.

Researchers warn that sufficiently powerful quantum computers could eventually break the cryptographic systems currently protecting major blockchain networks, including Bitcoin, Ethereum, Solana, and XRP. A particular concern is what security researchers call the "harvest now, decrypt later" threat. Bad actors can collect publicly visible cryptographic data from the blockchain today and hold onto it, waiting for quantum hardware to mature enough to crack it and access the assets behind it.

Project Eleven, which raised $20 million in a January 2026 Series A, is partnering with Ripple on validator-level testing, developer benchmarking, and a post-quantum custody wallet prototype as part of Phase 2 delivery.

Sources:
Post-Quantum Readiness on the XRP Ledger, Ripple
Ripple wants the XRP Ledger to be quantum-proof by 2028, CoinDesk
Timelines for migration to post-quantum cryptography, NCSC