Tagger is a decentralized AI data solutions platform that facilitates data collection, labeling, management, and trading within a permissionless framework. It employs a decentralized corporate (DeCorp) model, leveraging blockchain technology to establish a cross-border data authentication protocol. The platform integrates tools such as an AI Copilot for assisted data labeling, manual annotation interfaces, and a decentralized storage system. Participants can contribute to data tasks and are incentivized through a proof-of-human-work mechanism. Tagger's infrastructure supports a decentralized physical infrastructure network (DePIN) for data sharing and emphasizes privacy and ownership protection in its data handling processes.