Quantum computers threaten $2 trillion of crypto assets, experts urge migration

Advances in quantum computing are closing in on the point where they could compromise the elliptic-curve cryptography that underpins most blockchain assets, a risk that currently shields about $2 trillion of the market. Christopher Smith, co-founder and CEO of Quantus, describes this as a forthcoming "great quantum migration" that will require participation from every segment of the digital-asset ecosystem. Google researchers suggest the computational effort needed to breach these keys may be lower than earlier estimates, making large targets like Binance’s $10 billion Bitcoin cold wallet and the administrative key for USDT especially attractive.

Coinbase cautions that the primary exposure lies at the wallet level rather than the Bitcoin protocol itself, and highlights the difficulty of updating decentralized systems where users, exchanges and wallet providers must all act. The National Institute of Standards and Technology and industry groups are promoting post-quantum cryptographic standards, while initiatives such as the Bitcoin Security Consortium are funding development and publishing guidance. Experts stress that preparing now, even if a quantum attack remains years away, is far safer than reacting after a breach.