File data processing method and device based on blockchain, equipment and storage medium

The embodiments of the invention disclose a file data processing method and device based on a blockchain, equipment and a storage medium. The method is executed by a user node, and comprises the following steps: after determining that an initial version of a target file is stored in a blockchain, acquiring the target file operation data of a user; and sending an on-chain file updating request comprising the operation data to a blockchain network, wherein the on-chain file updating request is used for indicating the blockchain network to write the operation data into the blockchain. According to the embodiments of the invention, the target file on the blockchain is subjected to the chain operation, the operation data is written into the blockchain, and the updated contents of the file are stored by utilizing the blockchain technology, so the credibility and reliability of the updated contents of the file are improved, the loss of the operation data is avoided, and different versions ofthe target file are suppo