Satoshi’s 1.1M bitcoin and millions more can be saved from quantum attack, says expert

Satoshi’s 1.1M bitcoin, along with millions more, could be protected from a future quantum attack, AmericanFortress CEO Michal Pospieszalski says. I’ll be honest: this is not another loose crypto panic piece. The numbers are too large for that. Satoshi Nakamoto’s 1.1 million bitcoin, nearly 5 million BTC in dormant accounts, and about $400 billion in combined value, according to the source. If quantum risk ever jumps from research labs into market desks, old cracked wallets stop being trivia. They become a BTC event.

AmericanFortress researchers have introduced a patent pending post quantum signature scheme that they say can protect crypto assets without making everyone move funds at once. The company says the protocol can cover inactive and dormant wallets, including old “Pre-BIP32” bitcoin addresses. Those addresses do not use seed phrase derivation, so they are harder to upgrade than newer wallets. That’s the ugly bit. My take: the technical problem is only half the story; the politics around touching old BTC may be worse.

The company’s proposed fix is a backward compatible soft fork with a defensive freeze. Pospieszalski told CoinDesk the protocol would protect those funds “until governance decides what to do with them after Q-day.” After that, the community could vote to move, burn, or redistribute frozen assets. Heavy sentence. Most Bitcoin security talk assumes stronger keys are the clean answer. That’s only half right. For BTC traders, the sharper question is whether Bitcoin can freeze coins linked to quantum risk and still keep property rights, censorship resistance, settlement credibility, and market confidence intact.

This is where the safe haven pitch gets awkward. BTC often trades like a risk asset, but investors still reach for the “digital gold” argument when geopolitical stress rises. In January 2020, during the Soleimani strike period, BTC gained 8%, and many traders compared the move with gold and macro fear. Why does this matter? Because a real quantum exploit against old BTC wallets would hit that story at the base layer. A safe haven cannot look breakable underneath. Not for long.

One limit matters here: the source does not say quantum computers can crack master seed phrases. Pospieszalski says the risk is mostly with wallet addresses whose public keys have already been exposed onchain. In that case, a quantum computer could reverse engineer individual private keys. He also says research points to more than $600 billion in crypto assets in that vulnerable state, including 100% of Solana addresses, which he called “common knowledge.” So no, this is not just a BTC problem. SOL, ETH, and TRON get dragged into it too.

Adoption may matter as much as the cryptography. AmericanFortress says its approach uses zero knowledge proofs to prove master seed ownership when someone spends. It offers Pre-BIP32 raw key protection and standard BIP32 quantum protection. It also offers a faster “QBIP32” derivation scheme. The company says it works with existing curves and does not slow performance. Is that the line traders will care about? Yes, especially after a BNB Chain quantum security test worked this week but cut transaction throughput by 40%.

For active users, Pospieszalski says moving to a quantum proof level takes 50 milliseconds through a wallet prompt. For dormant seed derived wallets, he says the base layer can handle protection programmatically. The business model is already visible, which matters more than some people admit. AmericanFortress is licensing the SDK to Layer 1 and Layer 2 blockchains in exchange for marketing placement, while leaving the door open to exclusive acquisitions. The company also announced an $8 million seed round co-led by SAVA Digital Asset Fund, Moon Pursuit Capital, and 0G Labs.

“It’s just a node and wallet software update in that order,” Pospieszalski said.

Bitcoin’s culture will test that line as much as Bitcoin’s code. A “minor BIP,” as Pospieszalski described it, may sound routine to software teams. Counter to the usual advice, the hard part may not be shipping wallet software first and node software second. The hard part is getting BTC governance to accept anything that touches Satoshi-era coins, dormant balances, or a freeze-like mechanism. I would treat the June 2 Paris presentation as something to watch, not evidence that consensus is anywhere close.

What this means

Quantum risk is starting to look less like distant theory and more like something companies can pitch, fund, test, and sell to chains. That changes the market frame. The tickers in view are BTC first, then ETH, SOL, TRON, and BNB, because the source ties the issue to exposed public keys, dormant bitcoin, major chains, and a BNB Chain test that slowed throughput by 40%. The real question: do investors start treating quantum readiness as infrastructure quality? I think they do, the same way they already check uptime, validator concentration, ETF access, custody support, and liquidity.

Watch the June 2 presentation in Paris, then watch whether the promised bitcoin cryptographic methods get serious discussion in the weeks after it. For BTC, price is only part of the story. The bigger issue is whether traders still believe the 1.1 million Satoshi-era coins and nearly 5 million dormant BTC cited by the source can stay contained. For SOL and other fast chains, the test is cleaner and harsher: can they add quantum protection without taking a BNB-style 40% throughput hit? We tried to separate the technical risk from the market risk here. It does not really separate.

FAQ

What is the primary threat from quantum attacks to Bitcoin?

Michal Pospieszalski says the main threat is that quantum computers could reverse engineer individual private keys from public keys already exposed onchain. That mostly affects wallet addresses that have already broadcast their public keys.

How much Bitcoin is considered vulnerable to quantum attacks?

AmericanFortress CEO Michal Pospieszalski says about 1.1 million Satoshi Nakamoto bitcoins and nearly 5 million BTC in dormant accounts could be vulnerable. The source puts the combined value at about $400 billion.

What is AmericanFortress’s proposed solution to protect Bitcoin from quantum attacks?

AmericanFortress proposes a backward compatible soft fork that would place a defensive freeze on vulnerable funds. Pospieszalski says the freeze would protect them until the community decides what happens next through governance.

Does AmericanFortress’s solution require users to migrate their funds?

No. AmericanFortress says the system is designed to protect crypto assets without forcing a mass migration of funds.

Are only Bitcoin wallets vulnerable to this type of quantum attack?

No. Pospieszalski says research points to more than $600 billion in vulnerable crypto assets, including 100% of Solana addresses. That puts SOL, ETH, and TRON in the same discussion as BTC.

How does AmericanFortress’s solution impact transaction throughput?

AmericanFortress says its approach works with existing curves and does not hurt performance. That contrasts with a BNB Chain quantum security test that slowed transaction throughput by 40%.

What is the timeline for the AmericanFortress presentation?

AmericanFortress is scheduled to present its post quantum signature scheme on June 2 in Paris.

What is a “defensive freeze” in the context of this solution?

A “defensive freeze” is AmericanFortress’s proposed way to lock vulnerable funds so quantum attackers cannot take them. The community would later decide whether to move, burn, or redistribute those assets.

What is the significance of “Pre-BIP32” bitcoin addresses?

Pre-BIP32 bitcoin addresses are older addresses without seed phrase derivation. AmericanFortress says that makes them harder to upgrade automatically and harder to move cleanly than newer wallets.

How quickly can active users migrate to a quantum-proof level with this solution?

Pospieszalski says active users can move to a quantum proof level in 50 milliseconds through a wallet prompt.