The Ethereum Foundation starting staking and selling Ethereum to Bitmain OTC this time is significant. First of all, the Ethereum Foundation is a non-profit organization. Unlike other blockchain foundations, it does not engage in profit-making activities. However, to support the ecosystem and hire developers and researchers, it needs to incur costs. Since it does not generate revenue, it has been operating by continuously selling its held $ETH in the market. This has been a point of ongoing criticism for the Ethereum Foundation. Moreover, because the foundation has limited funds, the salaries at the Ethereum Foundation are very low, essentially at an honorary level. In fact, the $ETH held by the Ethereum Foundation also has limitations, raising concerns about the foundation's sustainability. 1. Foundation Staking Thus, the Ethereum Foundation decided to stake its held Ethereum and operate validators, using the interest generated for operational costs. Although the foundation had refrained from staking due to concerns that it could lead to centralization issues in PoS, the current state of Ethereum has allowed for the foundation's staking to be at a level of 0.2%, which has been sufficiently decentralized to have minimal impact. 2. Sale to Bitmain OTC The Ethereum Foundation has mostly sold ETH directly in the market for operational costs. However, it has changed this process to sell OTC to Bitmain, which will "continue to hold ETH." This creates a way to make the foundation's operational costs sustainable while minimizing market shocks.