Banks Rush to Buy Bitcoin Infrastructure, Ignore Looming Quantum Security Threat

The world's largest banks are finally buying into Bitcoin infrastructure, but they may be ignoring a pressing problem: quantum security. In May, BNY announced it would offer Bitcoin and Ethereum custody in Abu Dhabi, while Standard Chartered confirmed its full acquisition of Zodia Custody by the end of August.

However, as institutions rush to get on board, they are buying into infrastructure that may not be ready for a future where quantum computers can easily break classical cryptography. A report from Taurus warns that every custodian on the market today remains exposed to a future quantum transition and that one of the industry's most popular custody architectures may face structural limits when blockchains migrate to quantum-resistant signatures.

The problem lies in how custodians currently generate, store, and use digital keys. Two types of architecture dominate this business: multi-party computation (MPC) and hardware security modules (HSMs). However, the report argues that these two designs face different futures once quantum computers enter the picture.