It’s not actually difficult to completely hide information; the real challenge lies in—how to make others believe you without revealing all the data?

This is the core of practical privacy technology. You don’t need to tell others who you are, but you must be able to prove "you meet certain conditions." It sounds abstract, but in reality, there are countless examples: when applying for a loan, you don’t have to hand over all your financial statements, just prove that you meet the lending criteria; when buying a house, you don’t need to disclose all assets, just show proof of funds.

Cryptography has endowed Web3 with the same possibilities. Through technologies like zero-knowledge proofs, users can gain trust while remaining anonymous. This is not only the future direction of privacy protection but also a new paradigm for on-chain identity verification.