Bit Trust System is an electronic trust system that is completely implemented by peer-to-peer technology. It is a system-level trust program based on blockchain and algorithm implementation. It ensures that both parties to a transaction can complete transactions online through algorithms. There is no need for any centralization organization. BIUT aims to solve the key problem of trust reconfiguration in the new economy and new financial fields such as E-commerce, sharing economy, P2P, crowdfunding, etc.