Google Sets 2029 Deadline to Deal With Quantum Threat—Is It a Problem for Bitcoin?

“As a pioneer in both quantum and PQC, it’s our responsibility to lead by example and share an ambitious timeline,” the blog reads. “Quantum computers will pose a significant threat to current cryptographic standards, and specifically to encryption and digital signature.”

The announcement, signed by Google VP of Security Engineering Heather Adkins and Senior Cryptography Engineer Sophie Schmieg, describes the 2029 target as a response to rapid advances in quantum hardware, error correction, and factoring resource estimates.

In plain English: The machines that could theoretically crack today's encryption are getting real, faster than expected.

Normal computers would take centuries to crack something like this. Quantum computers may take that problem and turn it into something solvable in practical time.

Quantum computers have achieved almost a 10x growth in power in the last five years.

So, should we all panic and sell our coins? Not really—but we should pay attention.

First of all, Google isn’t saying quantum computers will break cryptography by 2029. It’s simply saying it plans to be ready before they do.

Jameson Lopp, co-founder of Bitcoin custody firm Casa, believes that even if quantum computers remain years away from posing a real threat, upgrading Bitcoin's protocol and migrating billions in user funds could take five to 10 years on its own.

“Right now, we’re several orders of magnitude away from having a cryptographically relevant quantum computer, at least as far as we know,” Loop told Decrypt earlier this year. “If innovation in quantum computing continues at a similar, fairly linear rate, it’s going to take many years—probably over a decade, maybe even several decades—before we get to that point.”

Bitcoin's decentralized governance means no single team can flip a switch. Miners, wallet developers, exchanges, and millions of individual users would all need to move simultaneously.

Google can set a 2029 deadline because it controls its own infrastructure. Bitcoin cannot. And that asymmetry is exactly what makes Google's announcement matter for crypto—not as a death sentence, but as a hard deadline the network didn't set for itself and can't afford to ignore.