Coinbase’s team of quantum experts has released a report explaining how future quantum computers could threaten the security of blockchains and current encryption methods. The report also outlines steps to take now to prepare for these potential risks, before quantum computers become powerful enough to cause problems – a point in time they call ‘Q-Day’.
I’m working with a fantastic team for this project! Our board includes researchers from the Ethereum Foundation, as well as Stanford, UT Austin, Eigen Labs, Bar-Ilan University, and UC Santa Barbara. We bring a lot of diverse expertise to the table.
The team recognizes that quantum computers don’t exist yet, but they believe one could be developed within the next ten years.
Because of this emerging danger, the team strongly recommends that everyone immediately start preparing for potential threats from quantum computers, protecting all areas of the digital security world – from blockchains and cryptocurrency exchanges to digital wallets and the devices they run on.
“The time to start preparing is now, not when it’s urgent.”
Quantum risks to crypto
The team found that cryptocurrencies aren’t equally at risk from attacks by quantum computers. Wallets are the most vulnerable because their public keys could be exposed.
Although Bitcoin‘s system is generally considered secure, a significant 6.9 million BTC are held in wallets with potentially compromised security.
Proof-of-stake blockchains can be vulnerable due to how validators sign transactions, but Ethereum is already planning updates to fix this problem.
Deployment challenges
Following 20 years of study, the US National Institute of Standards and Technology (NIST) has published new security standards designed to withstand attacks from future quantum computers.
While promising, using these new signatures has been difficult. They require a lot of data, which makes transactions more expensive, slows things down, and needs more storage space.
A greater challenge is coordinating the migration of millions of wallets to quantum-proof systems.
A major hurdle is quickly figuring out how to handle existing data after an upgrade. Will it be secured, cancelled, or left vulnerable to future technologies like quantum computing?
Current developments
Both Bitcoin and Ethereum are working on updates to protect against potential threats from quantum computers. Ethereum’s upgrade will also make the network faster and more efficient.
Solana, Algorand, and Aptos are working to protect users from potential threats posed by quantum computing, and networks like Optimism are setting specific dates to upgrade to more secure systems.
Coinbase is building adaptable technology to support new digital security methods and prepare for the future of cryptography, including protection against quantum computers.
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2026-04-22 02:52