Simply put
- Experts are worried that quantum computers might eventually be capable of accessing vast amounts of Bitcoin, potentially worth billions.
- This could lead to sudden drops in Bitcoin prices during liquidation events.
- There might be solutions, but time is certainly running short.
Some members of the Bitcoin community seem to be dismissing advancements in quantum technology. However, behind the scenes, many influential figures in cryptocurrency and business are genuinely worried about the potential risks.
A computer powerful enough to figure out a wallet’s private keys could seriously disrupt the Bitcoin market, flooding it with ancient Bitcoin. Security professionals discussed this concern at a private gathering recently.
While these threats once felt distant, experts now agree that the Bitcoin community may have only a few years—maybe less—to devise a plan. Among those advocating for preparations is Jameson Lopp, the CTO and co-founder of CASA.
“It’s tough to imagine this lasting decades; the timeline feels compressed,” he noted. “The challenge lies in whether the Bitcoin community can reach a consensus on addressing this risk before it escalates into a true crisis.”
The meeting, held at Delilah in Las Vegas, was organized by the Multi-Chain Layer-2 Network, which is backed by Bitcoin miner Marathon Digital, along with crypto insurance company Evertus. This event aimed to explore possible solutions, and it garnered RSVPs from members of the US Treasury, although sources diverge on whether Treasury officials actually attended.
Closing Event
With companies like Google and Microsoft pouring billions into quantum computing, it seems there’s now a tech race among global elites.
Quantum machines utilize particles that can behave as both particles and waves, allowing them to perform complex calculations more efficiently.
Bitcoin is at risk from quantum computers capable of reverse-engineering private keys. This could enable malicious actors to steal assets, including those belonging to the pseudonymous creators and others who mined lost coins.
A recent study from Google suggested that breaking the RSA encryption, which protects private keys, might require even more quantum energy—20 times what was previously estimated. In theory, just having a public key could suffice.
Experts warn that Bitcoin’s security could potentially be compromised without warning. Given how the network currently operates, bad actors might be incentivized to gather as many keys as possible before taking action against billions in Bitcoin.
A study by Deloitte found that roughly 25% of Bitcoin’s circulating supply is exposed to quantum vulnerabilities, equating to nearly $42 billion at today’s prices.
Should attackers emerge, they could push the Bitcoin price downward rapidly during a “clearing event,” experts predict.
While it’s feasible to secure Bitcoin from quantum threats by shifting assets to wallets with undisclosed public keys, this isn’t practical for users who have already lost their keys or for exchanges where keys must be public for deposits.
“This is a substantial issue,” said Beast, emphasizing the need for the community to lean toward “preparation” rather than “denial.”
The biggest shortage ever
Currently, the Bitcoin community faces two potential responses if quantum attacks become a reality: either adapt to the market changes instigated by these attacks or start seizing assets. The latter option, however, seems to contradict the freedom-oriented philosophy of Bitcoin.
Beast has proposed BIP 360, a set of plans to introduce address types with post-quantum encryption. Experts remain uncertain about the future capabilities of quantum computing, leading to various levels of proposed security measures.
According to CASA’s Lopp, these quantum signature schemes could become quite large in data size, sparking a “block size debate” similar to past disputes in the Bitcoin community over Nakamoto’s initial vision.
Even so, implementing Beast’s solution would require all Bitcoin holders, from casual users to large exchanges, to transition their assets to new address types.
Casey, proposing a different solution without a designated BIP number, envisions an “hourglass” approach, extending the timeline for potential quantum access issues from hours to up to eight months.
He pointed out that a specific Bitcoin address type, known as Pay-to-Public-Key (P2PK), is particularly vulnerable to quantum threats. Although this format was once standard in early Bitcoin mining, most modern wallets now opt for hash-based signatures.
By limiting the number of P2PK transactions that can appear in a block, Casey argues that the community would gain valuable time to explore other solutions. This method might also dissuade malicious actors from targeting active Bitcoin addresses, as they could be more inclined to pursue abandoned ones.
A strategy to gauge the number of actors with access to advanced quantum tech could help mitigate risks. If only one P2PK transaction were allowed each block, attackers would have to compete to include their transactions, and this bidding could provide an incentive to Bitcoin miners, potentially cushioning the market fluctuations.
Several stakeholders, including Project 11, are committed to facing this impending threat. They are offering a Bitcoin bounty to anyone who can break the foundational algorithms of the network, which supports assets worth around $2 trillion.
“This is something Bitcoiner may not want to hear,” said Alex Pruden, co-founder of Project 11, during the event’s Q&A session.
In a more personal reflection, a Wall Street veteran suggested a possible remedy if quantum attacks lead to price drops for Bitcoin.
“Open in the middle of the record with high lipids,” he remarked, hinting at the rising trend toward decentralized exchanges.
