Nobel Physicist Warns of Quantum Threat to Bitcoin

Nobel Prize-winning physicist John Martinis has sounded the alarm on the potential vulnerability of Bitcoin to quantum computing attacks.

According to Martinis, a powerful quantum computer could break Bitcoin encryption in minutes, potentially allowing for unauthorized access to funds. This threat is not hypothetical, as recent Google research demonstrates that such an attack is theoretically possible.

The concern centers on a specific vulnerability window: when a bitcoin transaction is broadcast, its public key becomes visible before it is confirmed onchain. A powerful quantum computer could use this window to derive the corresponding private key and redirect funds before final settlement.