ChainCatcher news, Sign product lead clairemxd.eth posted on X: "The journey of Sign began in 2021 with EthSign, a hackathon project born from CEO Xin's simple idea that digital signatures should be verifiable and accessible on the blockchain. After several iterations of the EthSign product, we launched the Sign Protocol, a full-chain authentication infrastructure that allows users to sign data on-chain in a structured format.The Sign App, launched in 2025, is the first product and the focus of Sign this year. The Sign App connects users' real-world identification documents with blockchain wallets in a user-friendly manner, seamlessly proving users' identities while protecting their privacy.The Sign App is privacy-centric and aims to empower users with control over their identities. However, the Sign App is not just about identity verification; it also creates a universal trust layer for the Web3 ecosystem. In the future, we hope the Sign App will evolve into a leading on-chain wallet identity resolver, providing a resolver framework for applications to easily verify user identities."