Digital certificate storage method, system and device based on block chain and storage medium

The invention relates to the technical field of digital certificate storage, and discloses a block chain-based digital certificate storage method, system and device and a storage medium, and the method comprises the steps: obtaining a digital certificate encrypted and stored in a distributed network, and generating storage transaction data; broadcasting the evidence storage transaction data in the block chain network, and auditing the evidence storage transaction data through an auditing node in the block chain network; in response to audit passing, verifying the evidence storage transaction data through a non-audit node in the block chain network; and in response to verification passing, consensus is carried out on the evidence storage transaction data, and uplink storage is carried out. According to the invention, the on-chain and off-chain cooperative management is carried out through the storage model based on the block chain and the distributed network, the security of green power certificate storage is