Financing credit guarantee method and system based on multi-source data block chain tamper prevention

The invention discloses a financing credit guarantee method and system based on multi-source data block chain tamper prevention. The method comprises the following steps of: uploading evaluation information: uploading enterprise operation information evaluated by a third-party certification authority to a block chain; collaborative manufacturing order data uploading: uploading the order data in the collaborative manufacturing process to the block chain; financing credit guarantee: submitting a financing application to the block chain, and granting access permission to the block chain; financing decision: carrying out financing judgment; determining financing and generating a financing contract to the block chain; determining a financing contract; the invention aims to provide a financing credit guarantee method and system based on multi-source data block chain tamper prevention. The authenticity of the multi-source data is guaranteed through the block chain, the multi-source data provides credit guarantee for