This article provides a detailed introduction to Theta Network, a decentralized video transmission network built using blockchain technology. Theta aims to solve the "last mile" problem in video streaming services by incentivizing users to share bandwidth and computing resources to improve video transmission efficiency. Theta has two native tokens: THETA and TFUEL, used for network governance and transaction fees, respectively. The article also explores Theta's core mechanisms, including its consensus mechanism, resource sharing incentives, decentralized edge network, and smart contract platform. It specifically mentions the launch of Theta EdgeCloud, a decentralized software platform that provides GPU processing capability for AI and video tasks. Theta Network was founded in 2018 by Mitch Liu and Jieyi Long and has received support from investors, including Samsung.