In the cryptocurrency sector, the choice of a custodial service provider is crucial for ensuring the security of digital assets. Recently, experts have raised questions about hosting both Bitcoin and Ethereum Exchange-Traded Funds (ETFs) on a single entity, particularly the Coinbase platform. Gabor Gurbacs, a renowned cryptocurrency advisor, stated on his personal social media account that storing such a large amount of assets within one company could pose certain risks from a cautious perspective. Although Gurbacs acknowledges that Coinbase has an excellent security team, he still questions whether the boards of fund issuers and risk management committees can properly assess and consider this centralized custody risk as an 'acceptable' standard. This discussion has sparked attention both inside and outside the industry regarding the custody models of crypto assets and their potential risks, highlighting the importance of continuous scrutiny and improvement in digital asset management.