AUC, anchored by physical gold, is linked to the digital world. The inherent value of gold is combined with the transparency, security, and immutability of blockchain to introduce trust into the world of blockchain, cryptocurrencies, and gold. By integrating blockchain and IoT technology on the foundation of "gold", AUC aims to assist customers in gold trading, tracing, storage, processing, operation, and extraction through big data analysis and operation. AUC integrates intangible digital assets with the physical gold economy system including spot gold, gold mine resources, and more, creating a global financial ecosystem of blockchain and physical gold.