Ripple has released a multi-phase roadmap to make the XRP Ledger resilient to quantum computing attacks, with the goal of achieving full post-quantum readiness by 2028. The move comes after Google Quantum AI research confirmed that the cryptography underpinning most blockchains today can, in principle, be broken by sufficiently advanced quantum hardware.
The assets are not threatened today. But the threat went from theoretical to credible, changing the preparation schedule. The question is not whether quantum computing will eventually matter for cryptography. The question is whether XRP holders should do something about this right now.
RIPPLE: $XRP LEDGER WILL BE QUANTUM RESISTANT BY 2028@Ripple does his $XRP Ready for the Quantum Ledger. These ultra-fast machines could one day break the codes that protect digital currency today.
The company has a clear plan to complete the upgrades by 2028 in four phases in… pic.twitter.com/RsA5jY2uqb
– BSCN (@BSCNews) April 20, 2026
What does post-quantum really mean for the XRP ledger?
Think of your XRP wallet as a padlock secured by a mathematical problem so difficult that no computer today could crack it in a reasonable amount of time. Quantum computers don’t just work faster; they approach certain math problems in a fundamentally different way, such as having a master key that can directly solve the puzzle. The specific algorithms that protect blockchain wallets and transaction signatures are vulnerable to this type of attack.
Added to this is a more subtle threat. Researchers call this “harvest now, decipher later.” Every time an XRP account signs a transaction, its public key becomes visible on-chain. A malicious actor could quietly collect this data today and store it, until quantum hardware is mature enough to use it. By the time the attack is technically possible, the foundations will already be laid.
Ripple makes it clear that this does not mean the assets are at risk today. But the company’s position is that preparation times are now significant and waiting until the threat is imminent would be too late to safely execute a migration across an active global financial network.
This is the same concern driving quantum defense proposals in the broader crypto space, from Cardano to Bitcoin. This is an industry-wide problem for which there is not yet an agreed solution.
What actions has Ripple already taken on XRPL?
(SOURCE: TradingView)
Ripple’s roadmap for post-quantum cryptography is divided into four phases, with work already underway. The Applied Cryptography team, including Dr. Murat Cenk and Dr. Aanchal Malhotra, is prototyping solutions, and engineer Denis Angell has tested the ML-DSA signature scheme on XRPL’s AlphaNet.
Phase 1 serves as a contingency plan to force a hard switch to post-quantum signatures in the event of classical cryptography failing, using zero-knowledge proofs to prove key ownership. Phase 2, planned for early 2026, will further explore NIST-recommended algorithms and evaluate their performance.
Phase 3, planned for late 2026, involves a controlled transition in which quantum resistant signatures work alongside existing ones on Devnet, helping developers. By 2028, Phase 4 aims for a complete production transition, including a formal amendment to native post-quantum cryptography.
The advantage of XRPL is its support for native key rotation, allowing users to update keys without creating new accounts, unlike Ethereum. Ripple is also partnering with Project Eleven to improve validator testing and accelerate the Phase 2 timeline.
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Should XRP Holders Be Worried About Quantum Risk Right Now?
The honest answer is: not urgently, but not ever. IBM’s current quantum processors operate at around 1,100 qubits. Breaking the cryptography used in blockchain wallets would require millions. The gap between current hardware and a real threat to XRP wallets is still wide. Ripple’s own framing is cautious: “This does not mean that assets are at risk today. »
The 2028 goal for full post-quantum readiness for XRPL is also ahead of most credible estimates for when quantum hardware could realistically threaten current cryptographic standards. Proposals to freeze Satoshi’s Bitcoin wallet reflect the same long-term concern: the risk is not tomorrow, but the window for preparation is limited.
What would change the situation? A sudden advance in the capabilities of quantum hardware, or proof that “harvest now, decrypt later” data collection is already happening at scale. Neither is confirmed. But NIST has already finalized standards for post-quantum cryptography, indicating that governments and standards bodies are treating this as a real planning horizon and not a science fiction scenario.
For XRP holders, the practical implication is to monitor the results of Project Eleven’s phase 2 validation tests in early 2026 – these are the first real-world performance data that will show whether XRPL’s quantum resilient architecture holds up under load.
Ripple Is Not Alone: How Other Blockchains Are Addressing Quantum Risk
JUST IN: $14 Trillion BLACKROCK JUST SAID #BITCOINTHE QUANTUM THREAT "IT’S SOLVENT"
THE WORLD’S LARGEST ASSET MANAGER TELLS YOU THE UPGRADE WILL HAPPEN
QUESTION OF TIME
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– The Bitcoin Historian (@pete_rizzo_) April 21, 2026
The broader crypto industry is grappling with the same problem at different rates. TRON announced a post-quantum upgrade called QuantumShield in early 2026, running hybrid signatures on its testnet, achieving comparable throughput while supporting approximately 30% larger transaction sizes. Algorand integrated post-quantum state proofs in 2022.
The Bitcoin debate, as the proposals around early Satoshi wallets show, is still largely in the discussion stage, given the complexity of coordinating protocol changes within a decentralized network without a central team.
What sets Ripple’s approach apart is the combination of an existing architectural advantage, native key rotation, with a named and sequenced roadmap and active cryptography research. Most networks are still evaluating the issue.
XRPL is already running test code. This is a good start, although 2028 is still two years away and the transition will require careful coordination with every validator, institution, and developer leveraging the network.
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The article XRP Ledger Post-Quantum Push: What Ripple is Really Doing to Prepare appeared first on 99Bitcoins.
