[Coinbase Head of Investment Research: About One-Third of Bitcoin Faces Risk of Quantum Attacks] Odaily Planet Daily News – David Duong, Head of Investment Research at Coinbase, stated that approximately one-third of Bitcoin's supply appears to be vulnerable to remote quantum attacks. David Duong believes that advancements in quantum computing are accelerating, and the threat it poses to Bitcoin has evolved from a distant theoretical concern to a structural risk. Currently, the encrypted outputs of wallets holding about one-third of Bitcoin's supply are publicly visible, making them susceptible to brute-force attacks. David Duong pointed out that quantum computing poses both economic and direct risks to Bitcoin. If quantum machines become powerful enough, they could mine Bitcoin blocks more efficiently, thereby distorting the network's incentive structure. Additionally, quantum computers could derive private keys from publicly available public keys, leading to the theft of funds from affected addresses. While quantum mining remains a secondary concern due to current scalability limitations, signature security has become a core issue. Previously, BlackRock also listed quantum computing as a risk factor in the revised prospectus for its iShares Bitcoin Trust submitted in May.