Many people think of "hiding data" when they hear about privacy. But Walrus Protocol has played a new trick.

Its Seal protocol uses threshold encryption to handle data—directly splitting and encrypting data into different nodes to ensure no single node can see the full content. The privacy protection is very solid, but that's not the most impressive part.

The real innovation is here: users can write access policies on the Sui chain. Imagine a scenario—data owners set rules, "Anyone who pays 10 @WAL can decrypt this data." In other words, this turns private data into a tradable commodity that can be automated.

Think about what this means. Previously, data was either monopolized by a company or completely non-liquid. Now, through Walrus Protocol, personal data ownership returns to users, and it can be automatically sold via smart contracts. This opens the door to decentralized data markets—future AI training data trading, subscription content distribution, and other business models could all be built on this technology.

In essence, this is about embedding access permissions into code, turning data transactions into automatically executed contract logic. This concept has already gone beyond simple privacy protection.