Project Eleven Collaborates With Ripple to Secure XRP Ledger for the Quantum Era

The collaboration will move post-quantum security toward real-world implementation on the XRP Ledger through system-wide assessment and new security solutions

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Project Eleven, the leading post-quantum cryptography firm, today announced a collaboration with Ripple, the leading provider of blockchain-based enterprise solutions across traditional and digital finance, to advance post-quantum readiness on the XRP Ledger (XRPL), a public blockchain, ahead of emerging quantum computing threats.

The cryptography underpinning virtually every major blockchain, including Bitcoin, Ethereum, Solana, and XRP, is vulnerable to attack by sufficiently powerful quantum computers. The U.S. government has set a 2035 deadline for migrating federal systems away from at-risk encryption, and companies like Google and Cloudflare are setting 2029 deadlines for themselves. Project Eleven is working with major blockchain ecosystems to protect the multi-trillion dollar digital asset ecosystem before quantum risk becomes an emergency.

“Every major blockchain is exposed to the same cryptographic vulnerability, but most of the response has stayed at the research stage,” said Alex Pruden, CEO and Co-founder of Project Eleven. “This engagement is about execution. Ripple is treating quantum risk as a practical engineering problem. That’s the right approach.”

“The quantum threat isn’t hypothetical. It is an engineering challenge with a clear timeline. What puts XRPL in a strong position is that we are not starting from scratch. We already have core capabilities like key rotation and a validator network that can coordinate upgrades at scale. Working with Project Eleven helps us move faster and more rigorously as we test and implement post-quantum approaches across the stack. The goal is to be production ready well before we need to be, not reacting when Q Day arrives,” said J. Ayo Akinyele, Head of Engineering, RippleX.

The collaboration will involve a full audit of XRPL’s validator, custody, networking, and wallet layers for quantum vulnerabilities, followed by deployment of hybrid signatures that layer quantum-resistant cryptography on top of existing standards and a quantum-secure custody wallet prototype. Project Eleven will deliver working code, real performance data, and a path to production.

Founded in 2024, Project Eleven has quickly established itself at the center of the quantum conversation and closed a $20 million fundraise in January 2026 led by Castle Island Ventures. The company operates the Bitcoin Risq List, which tracks quantum-vulnerable Bitcoin holdings; and Quantum Vault, a reference implementation for post-quantum security in wallets. The Ripple engagement represents Project Eleven’s most comprehensive effort to date.

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