Blockchain system, data interaction and processing method, node and storage medium

According to the blockchain system, the data interaction and processing method, the node and the storage medium, through cooperation between the intelligent contracts deployed in the blockchain and the under-chain contract codes of the corresponding contract participants outside the chain, each contract participant can encrypt the data and transmit the data to the intelligent contracts, and therefore, the plaintext data is stored in the blockchain in a ciphertext form, and the privacy leakage problem of the plaintext data in the smart contract in the prior art is solved. The mode can be practically applied to electronization of natural contracts, because some data related to commercial confidentiality usually exist in the natural contracts and are inconvenient to display in the intelligentcontracts in a plaintext manner, through adoption of the method, the corresponding data can be modified according to the execution of the contracts, and ciphertext data can be uploaded to the intelligent contracts to ensure