Have you ever had this experience: you buy a coin on a DEX, the transaction fees seem cheap, but after the purchase, you find you received less coin than expected? This could be due to market fluctuations, price shocks from the transaction itself, or your order being targeted by a bot before it's recorded on the blockchain: it buys in first, waits for your trade to drive up the price, and then sells to profit from the difference. This is a classic pinch attack. A successful trade doesn't necessarily mean it was executed well. In @Delphi_Digital's report on @ETHGasOfficial, I found that this everyday problem also causes headaches for institutions and can become a costly expense to resolve. When funds make large portfolio adjustments, besides transaction fees, they also need to consider: Will the order be exposed prematurely? When will it be recorded on the blockchain? Will the transaction order be adjusted? Does the service provider handling the transaction meet internal requirements? All of these factors affect transaction costs and operational arrangements. The core concept in the report is called "Institutional Block Space," which can be simply understood as: purchasing on-chain positions with processing conditions in advance. According to the report, ETHGas (founded by @lepsoe) proposes a system where institutions first set requirements, including which operators can process transactions, what screening and sorting rules to use, and then reserve block space by submitting orders privately. Block builders package transactions according to the rules set by the institutions. ETHGas relays check whether the relevant commitments have been fulfilled and routes the block to eligible block producers for publication. Who produces the block is still determined by the Ethereum protocol, and the final block still needs to pass Ethereum's normal verification and settlement process. There are two ways to reserve: one is to obtain pre-confirmation of inclusion from a block producer, promising to include the transaction in a designated block; the other is to purchase the entire block, gaining the right to sort transactions within that block. It aims to allow institutions to control their transaction paths while continuing to utilize existing Ethereum contracts and liquidity. For institutions, the value of this service is straightforward: orders are not pre-entered into the public trading pool, and with sorting protection, the chances of being front-runners or squeezed out are reduced; pre-arranged on-chain arrangements reduce time uncertainty; and screening processors facilitates due diligence and internal management. For institutions lacking these implementation conditions, this provides another reason to remain on the public Ethereum blockchain, reducing the need to build separate networks, migrate assets, and reconnect liquidity. However, this mechanism has its limitations. Private submissions do not guarantee confidentiality after being uploaded to the blockchain, pre-confirmation is not the same as final confirmation, and anti-snagging measures cannot eliminate the price impact of large orders. Whether institutions can continue to adopt it depends on whether the cost of improvements can cover service fees. The potential benefits for ordinary users depend on two main points: whether wallets and DEXs can access these transaction protections at a reasonable cost, and whether institutions can bring market-making funds and improve market depth. These benefits need to be implemented in practice; we cannot assume retail investors will benefit simply because "institutions are entering the market." For ourselves, a useful reminder right now is: when choosing a trading instrument, in addition to comparing gas fees, also consider who will handle the orders, whether they are disclosed in advance, and what MEV protections are in place.