  Web3 brings an emerging outlook for the value of decentralization, boosting
the decentralized infrastructure. People can benefit from Web3, facilitated by
the advances in distributed ledger technology, to read, write and own web
content, services and applications more freely without revealing their real
identities. Although the features and merits of Web3 have been widely
discussed, the network architecture of Web3 and how to achieve complete
decentralization considering law compliance in Web3 are still unclear. Here, we
propose a perspective of Web3 architecture, deController, consisting of
underlay and overlay network as Web3 infrastructures to underpin services and
applications. The functions of underlay and overlay and their interactions are
illustrated. Meanwhile, the security and privacy of Web3 are analyzed based on
a novel design of three-tier identities cooperating with deController.
Furthermore, the impacts of laws on privacy and cyber sovereignty to achieve
Web3 are discussed.
