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Q-Day Is Imminent. Can Bitcoin Survive the Quantum Threat?

40 min episode · 2 min read
·
Alex Pruden

Episode

40 min

Read time

2 min

Topics

Fundraising & VC, Leadership, Software Development

AI-Generated Summary

Key Takeaways

  • Exposed Bitcoin vulnerability: Approximately 35-40% of Bitcoin supply (hundreds of billions of dollars) has exposed public keys vulnerable to quantum computers, including Satoshi's coins, exchange wallets, and bridges that reuse addresses.
  • Migration complexity: Every blockchain must undergo a full lift-and-shift migration where all protocols adopt new cryptography, every smart contract gets redeployed, and every single asset moves to new addresses—far exceeding Ethereum 2.0 upgrade complexity.
  • Timeline uncertainty: Quantum threat projections range from 2-50 years, but Google's Willow chip demonstrated the science problem is solved. Only engineering scale-up remains, with no guarantee against sudden breakthroughs creating shorter timelines than expected.
  • Satoshi's coins dilemma: Bitcoin community faces three options for Satoshi's 150 billion dollars in exposed coins: let quantum computers steal them, proactively burn them, or reallocate to future mining rewards—a divisive issue likely causing forks.

What It Covers

Alex Pruden, CEO of Project Eleven, explains how quantum computing threatens Bitcoin and crypto through Shor's algorithm, which can break digital signatures. Thirty-five percent of Bitcoin is currently vulnerable to quantum attacks.

Key Questions Answered

  • Exposed Bitcoin vulnerability: Approximately 35-40% of Bitcoin supply (hundreds of billions of dollars) has exposed public keys vulnerable to quantum computers, including Satoshi's coins, exchange wallets, and bridges that reuse addresses.
  • Migration complexity: Every blockchain must undergo a full lift-and-shift migration where all protocols adopt new cryptography, every smart contract gets redeployed, and every single asset moves to new addresses—far exceeding Ethereum 2.0 upgrade complexity.
  • Timeline uncertainty: Quantum threat projections range from 2-50 years, but Google's Willow chip demonstrated the science problem is solved. Only engineering scale-up remains, with no guarantee against sudden breakthroughs creating shorter timelines than expected.
  • Satoshi's coins dilemma: Bitcoin community faces three options for Satoshi's 150 billion dollars in exposed coins: let quantum computers steal them, proactively burn them, or reallocate to future mining rewards—a divisive issue likely causing forks.

Notable Moment

Pruden warns that quantum computer operators have zero incentive to announce their capabilities publicly before using them to recover assets, meaning the crypto community will likely know less about quantum progress as the threat approaches reality.

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Episode Transcript

I got into this problem because, you know, you're like, Juan, how far is it away? But then you realize the scale of this, and you're like, oh my god. It might already be too late if we're starting now. Hi, everyone. Welcome to Unchained, your no hype resource for all things crypto. I'm your host, Laura Shin. Thanks for joining this livestream. Before we get started, a quick reminder, nothing you hear on Unchained is investment advice. This show is for information and entertainment purposes only, and my guest and I may hold assets discussed on the show. For more disclosures, visit unchainedcrypto.com. Today's guest is Alex Pruden, CEO and cofounder of Project eleven. But before we continue, we're gonna take a quick word from the sponsors who make this show possible, and I want to introduce you to our sponsor, Walrus, a project we actually use here at Unchained for data storage. Throughout the episode, you'll hear short excerpts from Rebecca Simons, managing executive at the Walrus Foundation. We'll start with this first clip on why Walrus is good for large data files. If you look at most debts today, they depend on quite a complex mesh of different infrastructure, a lot of which is centralized. Walrus is a decentralized data platform. It's particularly good with large unstructured data files, and it allows you to store and use those without dependency on any centralized systems. It works really well as part of the SWIS stack. It was created by Miston Labs who are also the originators of that SWIS stack. And what that means is natively together, they allow developers to build, with trust, ownership, privacy baked in right from the beginning. And what this does is it allows you to build use cases that monetize data in ways that just have not been possible before. So there are whole new revenue streams that are now available to builders to, to come and build on Morris. And I'm here with Alex Briden, CEO and cofounder of Project eleven. Welcome, Alex. It's a pleasure being here, Aura. Thanks for having me. Nick Carter of Castle Island Ventures has been sounding the drum about the threat of quantum computing to Bitcoin in particular. Although this is probably at least a few years out, he makes a lot of valid points about how Bitcoin governance is extremely slow, and that means that developers should begin trying to come up with solutions to prevent issues now. Your company, Project eleven, is focused on this problem, not just for Bitcoin, but for all of crypto and blockchains. Before we get to what exactly your company, Project eleven, is working on, why don't you just start by explaining what quantum computing is and how that differs from current compute? Yeah. So it's it's a new computing paradigm, first of all, that's based on quantum mechanics, right, which is, you know, a branch of quantum physics that deals with the very small. Quantum computing is …

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