BAC is the token used on the Bit Asset Chain. All transactions on the Bit Asset Chain, such as transfers, smart contract executions, data storage, etc., require BAC consumption. Additionally, BAC is the token reward for nodes in the Bit Asset Chain ecosystem. The Biwei Chain is a new generation of high-performance public chain. Its consensus system adopts an original ZI-POS consensus mechanism, abandoning the inflation model of traditional POS systems. It perfectly simulates the Bitcoin mining ecosystem while ensuring the high-performance benefits of the POS consensus mechanism. It has extensive application scenarios in fields such as finance, payments, storage, and traceability.