We usually talk about decentralized networks focusing on transaction privacy. But I've recently been thinking about a often overlooked issue: the privacy protection of the network infrastructure itself.

Exposing the IP address of a regular node might not be a big deal, but imagine—there's a large financial institution running a node that handles billions in assets. Once their identity is exposed, attackers will know your location. They don't need to attack the entire network; they can target your server directly during the precise time window when you produce a block, launching a DDoS attack. This could lead to block failures, transaction delays, liquidation risks... the consequences are unthinkable.

This touches on a fundamental contradiction: traditional PoS public chains disclose all validator information for transparency. You can even see on block explorers who staked how much, and analyze network topology to locate their physical position. This is a "badge of honor" for ordinary public chains, but for financial institutions? It’s a disaster.

If blockchains truly want to attract banks and securities exchanges as nodes, the consensus layer must have "resistance to targeting"—attackers should never be able to predict who will produce the next block. This is not just optimization; it’s a baseline requirement.

Dusk Network’s Blind Bid mechanism is an attempt in this direction, and it’s worth taking a good look at how it redefines the boundaries of node security.