Crypto

Coinbase Prepares for Post-Quantum Computing Risks with Fallback Architecture

Guavy AI Editorial Team Published September 23, 2026

Instruments

BTC ETH XRP

Crypto exchange Coinbase is taking proactive steps to prepare for the potential risks of post-quantum computing, which could compromise Bitcoin's security. According to Yehuda Lindell, Coinbase's head of cryptography, the company is building a fallback architecture using adaptable Hardware Security Modules (HSMs) that can support any future Bitcoin signing scheme.

This move comes as Google researchers in Q1 2026 projected that the timeline for a potential 'Q-day' threat has been moved to 2029. The effort aims to protect institutional custody, including roughly $250 billion tied to BlackRock's spot Bitcoin ETF.

Some networks like Ethereum and XRP have published post-quantum signature roadmaps, but Bitcoin upgrades are lagging due to governance and dormant-asset issues. Lindell emphasized that the approach is necessary because different blockchains may not use the same signing scheme.

Coinbase Prepares for Post-Quantum Computing Risks with Fallback Architecture

BlackRock Sees Machine-to-Machine Economy Boom with Stablecoins Leading the Way

U.S. Spot Ether ETFs Attract $162.2M in Three-Day Net Inflows Streak

Ethereum Price Forecast: Robinhood Predicts $2,645 Threshold