Recently, I've been pondering a question: What exactly is missing in Web3 social interactions?

Thinking carefully, in today's centralized platforms, your identity data is tightly controlled by tech giants like Facebook and LINE. But on the blockchain, the situation should be different—decentralized identity (DID) is actually meant to change this, returning ownership of identity to users.

Lately, I've looked into many related projects and found the core logic of DID quite interesting. Simply put, unlike traditional identities backed by government documents, it defines "who you are" based on your behavior on the chain. Your transactions, holdings, votes, social interactions—all can be aggregated into a unique identity tag.

From an application perspective, there are mainly two approaches now. One relies on off-chain verification, like BrightID, which confirms real identities through offline meetups—similar to a simplified KYC; the other is entirely based on on-chain behavior, like wallets and browser tools such as MetaMask and Etherscan, which directly use wallet addresses as identity identifiers.

Even more interesting are projects like Project Galaxy. They integrate both on-chain and off-chain behaviors, and after users bind their wallets to obtain a Galaxy ID, they can participate in various activities to earn NFT certificates. These certificates become part of your identity. Imagine all your achievements, transaction records, voting behaviors displayed visually—this could be very useful for recruitment, credit assessment, and similar scenarios.

But honestly, DID still faces many challenges. First is the cross-chain fragmentation—identity on Ethereum and Solana are separate, with no unified global view. Second is balancing privacy and transparency—while Web3 identities are owned by you, all actions are recorded on-chain and permanently traceable, which poses privacy risks.

The most critical issue is incentives. Having certificates alone isn't enough; these identity tags need community consensus to be truly valuable. If your DID certificates are just for display without practical use cases, they’re just a different way of showcasing your wallet.

However, in the long run, the potential of DID is significant. It could break down information silos, enable cross-border credit transfer, and make on-chain recruitment and salary payments possible. But we're still in the early stages; the key is how upper-layer applications will leverage this technology to solve real problems. It feels like more interesting explorations are coming.