Is Bitcoin quantum-safe? The complete 2026 guide
Summary Quantum computers can theoretically break Bitcoin’s elliptic-curve cryptography, but no machine capable of doing so exists yet. Google researchers say cracking Bitcoin’s encryption may require fewer than 500,000 qubits — below the “millions” often cited. BIP-360 and BIP-361 propose quantum-resistant Bitcoin transactions and a phased migration away from legacy signatures. Ripple has a four-phase…


