Bitcoin could reveal how much bitcoin Satoshi Nakamoto can actually access if it shifts to a post-quantum system, a claim has emerged. Blockstream CEO Adam Back (아담 백) said the safest approach is to design an optional upgrade that allows a move to quantum-resistant cryptography if needed. That shift could help gauge the effective size of Satoshi-linked holdings. Separately, a proposal to restrict movement of quantum-vulnerable coins has drawn criticism as confiscatory.

Advances in quantum computing could pose a real threat to bitcoin and the broader crypto ecosystem, but the market increasingly views it as a medium- to long-term security transition rather than an immediate existential crisis. Bernstein said risks are concentrated in old legacy wallets holding about 1.7 million bitcoin, while mining is seen as relatively resilient. Executives including Adam Back urged timely preparation, including wallet standards, key rotation and a phased shift to post-quantum cryptography.