Coinbase Board Details 20,000 Bitcoin Keys Exposed to Quantum Threat

Coinbase has identified approximately 20,000 public keys potentially exposed to quantum computing threats, revealing a concrete number of holdings at risk as the blockchain industry prepares for a post-quantum reality. A document authored by the Coinbase Independent Advisory Board on Quantum Computing and Blockchain, dated June 8, 2026, details concerns surrounding and the challenges of migrating to post-quantum secure cryptography. The board, comprised of professors affiliated with UT Austin, Stanford, UCSB, Eigen Labs, University of Washington, and Bar-Ilan University, alongside representatives from the Ethereum Foundation and Coinbase, emphasizes that preparation should begin now, regardless of precise timelines for quantum computer development. According to Project11, the number of bitcoins that are vulnerable due to address reuse is currently about 5 million, with approximately 1.7 million Bitcoin spread across these vulnerable keys, many presumed to belong to Satoshi Nakamoto or owners who have…