Venture capitalist Tim Draper says fears that quantum computing will break Bitcoin (BTC) are misplaced, arguing that traditional banks and the dollars held within them face a bigger security risk.

In comments published by Benzinga and amplified in an X post on June 9, Draper said he considers his BTC holdings safer than cash sitting in a bank account.

Draper Says Banks Face Greater Quantum Risk Than Bitcoin

Responding to concerns that quantum computers could eventually crack BTC’s cryptography, Draper pointed out that financial institutions rely on older infrastructure that would be easier to compromise than the Bitcoin network.

“Quantum will crack the banks long before it touches the blockchain,” he wrote on X. “Everyone’s panicking about quantum breaking Bitcoin’s encryption while banks are running on legacy infrastructure that makes Bitcoin look like Fort Knox.”

He also argued that even if something did happen to the Bitcoin network, full node operators could roll back to the last secure block. Banks, as he put it, “don’t have that option.”

The rollback point is worth examining carefully. While that type of fork is technically feasible, it needs consensus from many node operators and miners, and it is usually only resorted to in extreme circumstances. Additionally, it would contradict Bitcoin’s claim of immutability, a tension that Draper did not address.

BTC investor Lark Davis backed Draper’s broader framing, saying that if people used “basic security hygiene,” then their holdings would be safer than cash in the bank, unless their keys got stolen. He also insisted that quantum technology will break all legacy security, so people need to stop singling out the cryptocurrency.

Draper also repeated a long-held prediction that Bitcoin will one day eclipse the dollar. He broke down the mechanism for that in a Crunchbase interview earlier in the year, where he said a time will come when retailers will “only take Bitcoin,” and were that to happen, he believes there would be a run on the dollar. Such is his confidence in the asset that in April this year, he reiterated an old bet that BTC could hit $250,000, this time giving it 18 months to do so.

A More Complicated Picture From Security Researchers

The quantum threat to Bitcoin has been analyzed in detail by several researchers, including on-chain analyst James Check, who in April argued that the commonly cited figure of 6.3 million BTC with exposed public keys overstates the actual risk.

According to him, active institutions such as exchanges and custodians, which face most of that exposure, are already working on solutions to mitigate that risk, meaning the genuinely high-risk portion is the roughly 1.716 million BTC in early-era Pay-to-Public-Key addresses, most of which he said are assumed to be permanently lost coins from Bitcoin’s earliest blocks.

Meanwhile, Draper’s infrastructure argument is directly counter to security expert Jameson Lopp’s. According to the Casa co-founder, who co-authored the BIP-361 proposal to freeze quantum-vulnerable addresses, banks can upgrade to counter quantum threats “orders of magnitudes faster” than Bitcoin, given that the cryptocurrency needs broad decentralized consensus before any protocol change can be made.

He estimated that it could take as much as a decade for a full Bitcoin upgrade to quantum-resistant cryptography, and that is the core difference. Draper is betting that banks will fail first, but Lopp thinks that Bitcoin’s slowness to upgrade will be the harder problem to solve.