Quantum computers may break bitcoin encryption by the mid-2030s — ARK Invest
Quantum computers could potentially break Bitcoin’s cryptographic protection around the mid-2030s, according to a new study by ARK Invest and the crypto financial services firm Unchained.
Researchers note that current quantum systems remain far too weak to attack the Bitcoin network. Breaking the cryptography securing BTC would require around 2,330 logical qubits, while today’s most advanced machines operate with roughly 100 qubits.
Analysts estimate that up to 35% of Bitcoin’s total supply could eventually be at risk if quantum computing capabilities reach that level. This mainly concerns coins whose public keys have already been revealed through previous transactions.
The threat will likely develop gradually
Experts stress that the risk is unlikely to appear suddenly on a single so-called “Q-day”, when quantum computers instantly become capable of defeating modern cryptography.
Instead, the threat is expected to evolve gradually as quantum hardware improves. This would give developers and the broader crypto community time to adapt security mechanisms.
Preparing for quantum-resistant cryptography
The report highlights the importance of preparing for future security challenges in the cryptocurrency ecosystem. One of the main approaches is the development and implementation of post-quantum cryptography designed to withstand attacks from powerful quantum computers.
According to the analysts, transitioning to quantum-resistant cryptographic standards could help ensure the long-term security of the Bitcoin network even as quantum technology advances.
