Recently, Vitalik shared an interesting idea that sounds like philosophical reflection, but in reality solves quite specific technical challenges. He proposed considering Ethereum not just as a financial network, but as part of a broader ecosystem of so-called “sanctuary technologies”—open and free tools that allow people to live, work, and manage their property even when pressure from governments or corporations becomes serious.

Why is this relevant at all? Because over the past few years, blockchain has encountered a problem that was previously discussed mostly in theoretical terms. As the creation of blocks becomes increasingly specialized, the power to decide which transactions end up in a block becomes concentrated among a small number of participants. This opens the door to censorship—not only from government pressure, but also from more insidious attacks.

This is where an interesting point about an open mempool comes in. When everyone can see your transaction before it even makes it into a block, you run into a classic issue: MEV searchers start manipulating the order. They see your attempt to swap tokens, and suddenly a similar transaction gets inserted in front of you, the price changes, and you end up with a worse rate. This is what’s called an open sandwich—an attack in which your trade is squeezed between two other trades.

To deal with this, the Ethereum community is working on several solutions at the same time. FOCIL is a consensus-level mechanism that guarantees validators will not be able to arbitrarily exclude legitimate transactions. At the same time, the idea of a cryptographic mempool is being developed, where the contents of a transaction are encrypted until it is included in a block. While the transaction is hidden, no one can predict its contents and carry out an attack.

These solutions work together with other updates, creating what researchers call comprehensive protection along the entire path from the user’s wallet to the final record written to the blockchain. FOCIL has already been confirmed for inclusion in Ethereum’s next major upgrade, which is expected after 2026. The cryptographic mempool is actively being promoted as an additional proposal.

In the end, all this work on the protocol points to one thing: Ethereum is once again putting the question of resistance to censorship at the center of its design. It may seem like excessive precaution, but in fact it’s a response to a very real challenge. The true value of an open blockchain is not in transaction speed and not just in placing assets on-chain. It’s the ability to provide people with a digital exit that cannot be shut down, is difficult to confiscate, and continues to operate even under pressure. When users can freely live, work, and manage their wealth without fear of arbitrary censorship—that’s when Ethereum will truly pass the real test of decentralization.