Ethereum dominates the DeFi world, and that's no secret. As of 2024, on-chain locked funds exceed $50 billion, and nearly all mainstream financial applications run on this chain. But if you've actually used Ethereum, you'll notice two unavoidable issues.

First is transaction fees. Even a simple token swap easily costs $50 or more in fees. That's a joke for small retail investors. But the more painful problem is the second one—privacy.

Ethereum is completely transparent. Every transaction, every contract interaction, your holdings, what assets you collateralize—all are recorded on the chain for anyone to see. Imagine borrowing on a lending platform—everyone can see how much you borrow and what you collateralize. Large transactions are more susceptible to "sandwich attacks"—front-running after the transaction is detected, causing slippage.

It's like living in a transparent glass house, with no privacy at all.

This is why privacy storage solutions are emerging. WAL is a good example. It doesn't aim to overhaul Ethereum with a new system but instead adds privacy features—like installing blinds on this house—living in the same place but with privacy protection.

The logic behind WAL isn't complicated. Although it is built on another blockchain, through cross-chain technology, it can seamlessly serve Ethereum ecosystem users. Users can transfer assets from Ethereum, perform sensitive operations within a privacy network, and then transfer back. During this process, transaction details are not exposed on the public network.

Specifically, there are two layers of value: one is privacy transaction bridging—your transfers and swaps can be completed within a private environment. The other is decentralized storage—Ethereum-based applications can use distributed storage to replace costly on-chain storage, gaining privacy benefits.

This collaborative model actually reflects a reality in the blockchain ecosystem: a single chain can't solve all problems perfectly. Ethereum is unbeatable in smart contracts and ecosystem development, but has inherent disadvantages in privacy and cost. Privacy storage layers fill these gaps, actually enhancing the overall ecosystem's competitiveness.

DeFi users, NFT traders, large holders—all don't want their financial information to be completely transparent. The demand is there, and solutions are emerging. This isn't a revolution, but an evolution.