This document, titled the VeChain Development Plan and Whitewpaper Version 1.0.0.0, published in May 2018, outlines the vision, development, and technical architecture of the VeChainThor blockchain. It begins by identifying limitations in existing public blockchains concerning governance, economic models, and regulatory compliance, which VeChain aims to overcome. The paper details VeChainThor's novel features, including its governance and economic models utilizing VET and VTHO tokens, its Proof of Authority consensus mechanism, and its multi-layer payment and transaction models. Furthermore, it describes the platform's architecture, its integration with IoT technologies, technical testing procedures, and numerous real-world use cases across various industries. Finally, it addresses the VeChain Foundation's economy, team, and governance structure.