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Quip.Network Shields 34% of Bitcoin From Quantum Attacks Now

Avatar of Ivy Delaney
April 28, 2026 by Ivy Delaney

Quip.Network is now shielding 34 percent of all Bitcoin in circulation from potential quantum attacks, a surprisingly high percentage of the cryptocurrency currently vulnerable to future computing advances. Postquant Labs announced the deployment of post-quantum Bitcoin wallets utilizing Arch Network’s smart contract layers, offering protection without requiring alterations to Bitcoin’s core code or a contentious soft fork. This move arrives as developers debate BIP-361, a proposal that would potentially freeze 5.6 million long-dormant coins and roughly 1 million BTC believed to belong to Satoshi Nakamoto. Colton Dillion, CEO and co-founder of Postquant Labs, said the Bitcoin community has delayed a fix for years, despite Satoshi himself discussing the quantum problem. Quip.Network offers a “third path,” allowing users to upgrade security immediately and avoid the risk of frozen funds.

34% of Bitcoin Vulnerable to Quantum Attacks

Over a third of all Bitcoin in circulation, 34 percent, is presently susceptible to attacks from future quantum computers, a figure revealed by Quip.Network that underscores the immediacy of the threat to the cryptocurrency’s security. This vulnerability isn’t a distant concern; it impacts a substantial portion of existing coins right now, prompting a search for proactive solutions within the Bitcoin community. Critics have labeled BIP-361 as “authoritarian and confiscatory,” raising concerns about its potential violation of Bitcoin’s core tenet of permissionless ownership. In response, Quip.Network is deploying a distinct approach, leveraging Arch Network’s Bitcoin-native smart contract layers to offer post-quantum protection without requiring a Bitcoin soft fork. This “third path” allows users to upgrade defenses sooner, mitigating the risk of future fund freezes. The solution utilizes trustless on-chain proofs of ownership with post-quantum keys, and is designed to automatically integrate future post-quantum protections as they become available.

Developers say any protocol upgrade could take 5 to 10 years, but with Quip’s approach, similar protection is available immediately. Rather than relying on external databases, Quip commits quantum-safe keys directly to Bitcoin via Arch Network, offering a native and auditable solution. This approach, according to Dr. Richard Carback, chief technology officer and co-founder of Postquant Labs, “ensures that a Bitcoin holder doesn’t have to trust Quip Network at all.”

Quip.Network Leverages Arch Network’s Smart Contracts

Beyond the debate surrounding BIP-361 and its potential to freeze vulnerable Bitcoin addresses, an alternative approach to quantum resistance is gaining traction. This design leverages Layer 2 solutions like Arch, which are anchored to real Bitcoin, allowing funds to benefit from security enhancements implemented on the L2 without requiring user intervention. This method allows for early defense against quantum threats, particularly in unforeseen scenarios where attacks may occur sooner than anticipated. The system narrows the window of quantum exposure to as little as two blocks by utilizing techniques like key rotation and hashed outputs, a timeframe considered too short for current quantum computing capabilities. Matt Mudano, Co-founder and CEO of Arch Network, emphasizes the practical implications: “Bitcoin holds more value than any asset on earth and right now 34 percent of it is sitting in quantum-vulnerable addresses. That’s not a theoretical risk, that’s a real infrastructure gap. What Quip is doing on Arch closes that gap natively; no bridges, no wrapping, no protocol changes. That’s how you protect Bitcoin without compromising what makes it Bitcoin.”

The Bitcoin community has delayed a fix for years, despite Satoshi himself discussing the quantum problem. Developers say any protocol upgrade could take 5-10 years, but with Quip’s approach, we provide similar protection immediately. It’s simple and works on top of Bitcoin today, using existing rules, with no community vote required.

Colton Dillion, CEO and co-founder of Postquant Labs

WOTS+ Signatures & Narrowed Quantum Exposure Window

Postquant Labs is addressing the escalating threat to Bitcoin from future quantum computers by deploying a novel defense mechanism utilizing WOTS+ (Winternitz One-Time Signature) cryptography. The company’s strategy diverges from the contentious BIP-361 proposal, which would freeze coins failing to migrate to quantum-resistant addresses, potentially including 5.6 million long-dormant coins and approximately 1 million BTC associated with Satoshi Nakamoto. The system’s architecture leverages the fact that all smart contract inputs can be independently verified, providing absolute ownership guarantees. A third-party audit is currently underway, with the code released early to encourage community review and ensure transparency.

It is much easier for Bitcoin L2’s to implement quantum protection than it is for Bitcoin core, and this approach ensures that a Bitcoin holder doesn’t have to trust Quip Network at all. The code is fully open-source and auditable. You get all of the original security guarantees, and you get increased protections automatically as the L2s implement them.

Dr. Richard Carback, chief technology officer and co-founder of Postquant Labs

The escalating threat of quantum computing has prompted the deployment of post-quantum wallets across multiple blockchains, including Bitcoin, as a proactive measure against future cryptographic breaches. With Quip.Network reporting that 34 percent of all Bitcoin in circulation remains vulnerable to quantum attacks, the urgency to secure digital assets is now demonstrably real, not merely theoretical.

Bitcoin holds more value than any asset on earth and right now 34% of it is sitting in quantum-vulnerable addresses. That’s not a theoretical risk, that’s a real infrastructure gap. What Quip is doing on Arch closes that gap natively; no bridges, no wrapping, no protocol changes. That’s how you protect Bitcoin without compromising what makes it Bitcoin .

Matt Mudano, Co-founder and CEO of Arch Network
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Avatar of Ivy Delaney

Ivy Delaney

Ivy Delaney has been working with neural networks and machine learning since the mid-nineties, back when a couple of hidden layers and a long afternoon of training counted as ambitious. She has watched the field go from academic curiosity to the thing quietly running underneath everything, and she brings that long view to quantum computing. For Quantum Zeitgeist she covers the ground where the two fields meet. That means quantum machine learning and the variational algorithms it leans on, and it also means the less glamorous but more interesting story of classical machine learning already doing real work inside quantum machines, decoding error-correcting codes, calibrating noisy hardware and learning the error models that simulators depend on. She writes about the hardware those algorithms have to run on too, and about the post-quantum cryptography scramble that the same hardware has set off. Her stories typically start with the paper, whether that is peer-reviewed work, conference proceedings or an arXiv preprint, with the source linked so you can hold a claim up against the research it came from. She is unimpressed by benchmarks that will not say what they beat, and by demonstrations that only work in the press release.

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