Quantum fears are already capping Bitcoin growth, Stacks founder warns

Concerns over quantum computing are already slowing institutional investment in Bitcoin, Stacks co-founder Muneeb Ali said, arguing the network needs a credible security-upgrade roadmap before risk-averse allocators commit to large positions.

"There is already a ceiling on the growth of Bitcoin because of quantum fears," Ali said during an interview on Cointelegraph's Chain Reaction podcast. He said uncertainty over Bitcoin's quantum security could push institutional investors to delay major Bitcoin purchases until developers establish a believable path toward quantum-resistant protection.

Stacks is a Bitcoin layer-2 network that brings smart contracts and decentralized applications to Bitcoin, using the base chain as its settlement layer. Ali co-founded the project.

What timeline did Ali lay out?

Ali warned that Bitcoin could enter a riskier period if developers fail to make meaningful progress toward quantum-resistant security by 2028. Protocol upgrades of this kind typically take years to implement, he said, with additional time needed for users to migrate their holdings to new addresses.

He pointed to 2030 as the working target for transitioning Bitcoin to quantum-resistant security, citing guidance from the US National Institute of Standards and Technology (NIST). Advances in artificial intelligence could accelerate quantum computer development, he suggested, potentially pulling that deadline forward to 2029.

Ali acknowledged that some Bitcoin proponents view the quantum threat as distant and the concerns as overblown. But he argued the disagreement itself damages confidence — especially in the absence of a credible upgrade roadmap. A community that cannot agree on urgency, his reasoning goes, is a community that institutions will price as risk.

Who would actually attack Bitcoin?

A sufficiently powerful quantum computer would more likely emerge from a major research laboratory than from an unknown attacker, Ali said. Companies such as Google or Microsoft would have little incentive to use such a machine to steal Bitcoin, given the legal consequences they would face.

The exposure is not Bitcoin's alone. A quantum security breach of the largest blockchain would cascade across the entire cryptocurrency industry, including projects that build their own protections, he said: "If Bitcoin gets hit, everyone gets hit downstream as well."

What are developers doing about it?

Work on quantum-resistant Bitcoin transactions is progressing. In September, StarkWare reported that researchers had cut the estimated computing cost of preparing an experimental quantum-resistant Bitcoin transaction by 79%, following a weeklong optimization challenge.

That approach requires no changes to Bitcoin's consensus rules — a significant design advantage on a chain where consensus changes are notoriously slow. But the cost reductions have been demonstrated only in benchmark tests, not in production conditions. StarkWare has described the technology as a last-resort measure and continues to advocate for a protocol-level upgrade as the longer-term solution.

Elsewhere in the industry, Justin Sun said Tron's post-quantum cryptography has gone live on testnet, signalling that rival chains are moving on the problem while Bitcoin's own roadmap remains unsettled.

The practical stakes for Bitcoin's institutional adoption run through the 2028 checkpoint Ali identified. If no meaningful protocol progress lands by then, the industry's largest asset enters a window — roughly 2028 to 2030 by his and NIST's timelines — where quantum risk moves from theoretical talking point to an unresolved structural question for allocators.