Tagger is a full-stack AI data platform built on a cross-border data authentication protocol. It utilizes Web3's crowdsourcing for data collection and labeling, while its blockchain foundation creates a permissionless system for data authentication and management.

The platform addresses data silos and authentication chaos by establishing a hub for data trading. It solves the lack of professional annotators and facilitates a decentralized ecosystem for data collection, labeling, and management.