Project acceptance method and device based on block chain, electronic equipment and storage medium

The invention provides a project acceptance method and device based on a block chain, electronic equipment and a storage medium. The project acceptance method based on the block chain comprises the steps that key pairs are distributed to all nodes such as subpackage merchant nodes in a block chain system; dividing the project into a plurality of sub-projects according to the subpackage condition of the subpackage provider node, and constructing a standard hash tree of each sub-project based on the acceptance standard of the sub-projects; encrypting a corresponding standard Hash tree based on the public key of the subpackage provider node to obtain a standard Hash tree ciphertext; when the subpackage provider node to be accepted submits acceptance information, decrypting the standard Hash tree ciphertext based on the private key of the subpackage provider node to be accepted to obtain a standard Hash tree to be accepted; and performing acceptance on the to-be-accepted sub-project based on the acceptance inform