BTC253: Quantum Computing and Bitcoin w/ Charles Edwards (Bitcoin Podcast)

What It Covers

Charles Edwards discusses quantum computing's threat to Bitcoin security, explaining how 2,330 logical qubits could break elliptic curve cryptography within two to nine years, requiring urgent community consensus on BIP 360 implementation.

Key Questions Answered

• •Quantum Timeline Convergence: Multiple sources including Jameson Lopp, Pierre Rokey PhD, McKinsey, and Microsoft researchers project quantum computers capable of breaking Bitcoin encryption arriving between 2027-2034, with highest probability in the 2027-2029 window based on current qubit development rates.
• •Physical vs Logical Qubits: Current quantum computers achieve only 10-100 logical qubits despite having thousands of physical qubits due to high error rates. Leading firms like IonQ project 8,000 logical qubits by 2029, exceeding the 2,330 needed to compromise Bitcoin's elliptic curve cryptography.
• •Migration Timeline Crisis: Migrating all Bitcoin addresses holding over $100 to quantum-resistant wallets requires 10-30 months minimum due to limited block space and larger post-quantum signatures (1-20 kilobytes versus 70 bytes). Combined with consensus delays, total implementation could require three to five years.
• •Vulnerable Bitcoin Supply: Approximately 25% of Bitcoin (including Satoshi's coins) uses P2PK addresses with exposed public keys, making them immediately vulnerable to quantum attacks. Another 75% using P2PKH remains protected only until owners sign transactions, creating interim but temporary security.