The Quantum Threat: Why Bitcoin Experts Aren't Panicking Over Google’s "Wake-Up Call"

NZ Blockchain Forum lead Trevor Topfer argues quantum technology poses a greater risk to global SWIFT banking than Bitcoin, as the crypto community prepares upgrades.

By: AXL Media

Published: Apr 21, 2026, 6:06 AM EDT

Source: RNZ Pacific

The Breaking Development: Google's "Y2Q" Warning

Google's white paper has sparked a debate over the timeline for quantum supremacy—the point at which a quantum computer can break standard encryption.

The Bitcoin Risk: Google warns that quantum advances could allow bad actors to derive private keys from public addresses, leading to the theft of funds.

The "Bigger Fish" Argument: Trevor Topfer, Executive Director of the New Zealand Blockchain Forum, argues that Bitcoin is a "small target." He points out that while only 5% of the world owns Bitcoin, nearly 100% of global trade moves on SWIFT rails, which are arguably more vulnerable to quantum disruption.

Speed of Advancement: Topfer suggests the threat is likely arriving faster than current industry estimates, which originally placed the "Y2K-style" moment (often called Y2Q) in the 2030s.

Background: The Double-Edged Sword of Quantum