Crypto's quantum arms race is accelerating fast

Multiple networks move at once

In the span of just two weeks, three major blockchain projects have taken concrete steps toward quantum-resistant infrastructure. @trondao deployed post-quantum signatures on testnet, @NEARProtocol shipped quantum security as part of its 2.13 upgrade, and the $XRP Ledger continued advancing a structured, multi-phase post-quantum roadmap. The moves reflect a broader shift across the industry: networks are no longer waiting for a cryptographic emergency to begin hardening their systems.

NEAR Protocol's upgrade 2.13 adds FIPS-204, a NIST-approved signature scheme built to withstand quantum attacks. NEAR's account model, controlled by rotatable access keys, enables a seamless rotation to quantum-safe signing. The protocol-level upgrade is designed to be transparent to users, meaning NEAR token holders and decentralized application users need take no action.

On the $XRP side, Ripple has introduced a multi-phase roadmap to prepare the XRP Ledger for a post-quantum future, with a target for full readiness by 2028. The approach involves active testing of quantum-resistant cryptography and a hybrid rollout that runs alongside existing systems, with Ripple working alongside Project Eleven to accelerate development including validator testing and early custody prototypes. The roadmap also includes a contingency plan to enable a secure migration to quantum-safe accounts if current standards are compromised before the 2028 target.

Why the urgency now

The push responds in part to research from Google Quantum AI suggesting that quantum computers could crack current blockchain cryptography with fewer resources and on a faster timeline than previously estimated, with some scenarios placing a credible threat window as early as 2032. If future quantum computers became capable of breaking current encryption standards, cryptocurrency wallets and blockchain infrastructure could face serious vulnerabilities, and although experts continue debating the timeline, many believe preparation must begin years before such systems become commercially viable.

Zcash's Tachyon upgrade is also targeting quantum readiness, according to CoinDesk Research, adding another major protocol to a list that is growing quickly. The broader crypto industry is grappling with the same problem at different speeds. Algorand integrated post-quantum state proofs as far back as 2022, while Bitcoin's debate remains largely at the discussion stage given the complexity of coordinating protocol changes across a decentralized network with no central team. The pattern is clear: projects with more centralized coordination are moving fastest, while the more decentralized networks face a longer road.

The industry's posture has shifted from reactive to proactive. Waiting for Q-Day, the theoretical moment when quantum computers can break current public-key cryptography, is no longer considered an acceptable strategy for infrastructure built to last decades.

Sources
Ripple: Post-Quantum Readiness on the XRP Ledger
CoinDesk: Ripple wants the XRP Ledger to be quantum-proof by 2028
CryptoWisser: NEAR Protocol Upgrade 2.13 is Live on Testnet