How Much Bitcoin Is Quantum-Vulnerable? Researcher Says 6.9 Million BTC

Project Eleven’s 1 BTC Q-Day Prize was meant to sharpen the debate over quantum risk to Bitcoin and other ECC-secured crypto assets. Instead, a sharp critique from Google quantum researcher Craig Gidney has turned the competition itself into the story. In an April 25 blog post titled “The predictable failure of the QDay Prize,” Gidney, […]

Paradigm researcher Dan Robinson has proposed a new mechanism that could let long-dormant Bitcoin holders, including Satoshi Nakamoto, preserve a future claim to their coins if Bitcoin ever has to restrict spending from quantum-vulnerable addresses. The proposal, called Provable Address-Control Timestamps, or PACTs, is designed to let holders prove they controlled an address before cryptographically […]

Quantum risk has become a recurring stress point in Bitcoin discourse, often framed as an existential threat. The claim usually follows a familiar arc: quantum computing is advancing quickly, cryptography is vulnerable, and Bitcoin isn’t adapting fast enough. Marty Bent doesn’t buy that framing. In his Dec. 14 episode, Bent acknowledged that quantum computing represents […]

Just over 10,000 Bitcoin — out of nearly 20 million in circulation — sits in wallets actually exposed to a quantum attack. Related Reading: US Moves Bitcoin During Iran Strikes — Market Watches Closely That number comes from CoinShares, a crypto asset management firm, which found in February that only 10,230 coins are both vulnerable […]

Google’s Quantum AI team recently issued an interesting warning to the cryptocurrency industry, noting how the mathematical foundation securing Bitcoin and most other digital assets may be far more vulnerable to quantum computers than previously believed. In a recent research blog post, Google said the quantum resources needed to attack the elliptic curve cryptography used […]