Google Bitcoin Near Quantum Computers Threat
Google Bitcoin Near Quantum Computers Threat
Google's Quantum AI team reveals that Bitcoin's cryptography can be broken with fewer than 500,000 physical qubits. Google bitcoin near quantum computers pose a significant threat.
Quantum Computers and Cryptocurrency
Quantum computers use the rules of quantum physics to process information, making them potentially capable of breaking Bitcoin's 256-bit elliptic curve cryptography. 20-fold reduction in physical qubits required to solve ECDLP-256.
How Quantum Computers Work
Instead of bits, quantum computers use qubits, which can be 0, 1, or a blend of both, letting the machine explore many possibilities in parallel. This means that, for certain math problems, a powerful quantum computer could solve in minutes what would take a classical supercomputer longer than the age of the universe.
Impact on Bitcoin and Ethereum
The research models a live attack where a quantum adversary could steal bitcoin mid-transaction in about 9 minutes, giving a 41% chance of beating Bitcoin's 10-minute block time. Ethereum might be less vulnerable than Bitcoin due to its faster transaction confirmation time.
Taproot and Quantum Exposure
Taproot, Bitcoin's 2021 upgrade, has widened the pool of quantum-exposed coins to about 6.9 million BTC, including Satoshi-era and heavily reused addresses.
Key Takeaways
- Google's Quantum AI team estimates that Bitcoin's cryptography can be broken with fewer than 500,000 physical qubits.
- Quantum computers pose a significant threat to cryptocurrency, particularly Bitcoin.
- Ethereum might be less vulnerable than Bitcoin due to its faster transaction confirmation time.
- Post-quantum migration will take years, even if the hardware is not here yet.
Frequently Asked Questions
What is a quantum computer?
A quantum computer is a computer that uses the rules of quantum physics to process information in ways normal computers can't.
How soon can we expect quantum computers to break Bitcoin's cryptography?
Google has set 2029 as an internal deadline for post-quantum migration, compressing the perceived timeline for Q-day.
