Google’s Quantum AI research team has issued a sobering warning that future quantum computers could break the cryptographic security systems that protect major cryptocurrencies like Bitcoin (BTC) and Ethereum (ETH) — potentially in as little as nine minutes once the required quantum power exists.

This alert comes from a newly published white paper and accompanying blog post from Google Research, outlining five quantum attack methods and showing that the quantum computing resources needed to threaten blockchain encryption may be much lower than previously thought.

🧠 What Is the Quantum Threat?

Cryptocurrencies rely on elliptic curve cryptography (ECC) — the mathematical foundation that keeps wallets, signatures, and transactions secure. But future quantum machines could use specialized algorithms (like Shor’s) to reverse‑engineer private keys from public keys, allowing attackers to access and steal wallet PLATFORM' target='_blank' title='digital-Latest Updates, Photos, Videos are a click away, CLICK NOW">digital assets.

Google’s study found that:

· The quantum resources needed to break ECC are up to 20× fewer than earlier estimates.

· A sufficiently powerful quantum computer could potentially crack a wallet key in minutes once the public key is exposed.

· This doesn’t mean such machines exist today — current quantum computers are orders of magnitude away — but the timeline may be closer than many thought.

💰 Which Crypto Assets Are Most Vulnerable?

According to the research:

· Bitcoin: Legacy wallets and older address types that have exposed public keys are especially at risk. Tens of millions of BTC — including early mined coins — are thought to be vulnerable once a quantum attack becomes feasible.

· Ethereum: Smart contracts, validators and admin keys add layers of exposure for ETH — making the system potentially more complex to secure against quantum threats.

The study highlights that dormant wallets and reused public keys could be prime targets when quantum computers reach cryptographically relevant scales.

🚀 Is This Risk Immediate?

No — not yet. google and other researchers are clear that quantum computers capable of executing these attacks do not exist today. However:

· The required scale of qubits and error‑corrected quantum hardware may be smaller than previously believed.

· There is an industry‑wide concern that cryptocurrency networks may not be ready when such machines arrive.

· google itself is targeting migration to post‑quantum cryptography by around 2029 to safeguard against these future threats.

This potential milestone is often referred to as “Q‑Day” — the point when quantum computing can realistically break classical cryptographic systems.

🛡️ What Can Be Done?

To protect wallet PLATFORM' target='_blank' title='digital-Latest Updates, Photos, Videos are a click away, CLICK NOW">digital assets from future quantum threats, experts and developers are urging:

· Implementation of Post‑Quantum Cryptography (PQC): Cryptographic algorithms designed to resist quantum attacks.

· Protocol upgrades: Changes in wallet standards and blockchain consensus rules to make key exposure less risky.

· Industry preparation: Exchanges, wallet providers, and chains collaborating on quantum‑safe roadmaps.

Some chains and projects are already exploring quantum‑resistant signatures and key rotation strategies.

🔍 In Summary

· Google’s research indicates that quantum computing could eventually break the encryption protecting Bitcoin and Ethereum, and may do so much sooner than previously anticipated.

· While current quantum hardware isn’t close to executing such attacks, the timeline for potential risk has shrunk, prompting a need for preparation now.

· The crypto industry is being urged to adopt post‑quantum security measures to ensure long‑term resilience.

 

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