Block chain-based information processing method and device, equipment and storage medium

The invention provides an information processing method and device based on a block chain, equipment and a storage medium. The method comprises the following steps: receiving a key retrieving request initiated by a user through a client; verifying a first account address of the user and adding the address into the blacklist; generating a second account address and corresponding key information; and taking the user asset information corresponding to the first account address as the user asset information corresponding to the second account address. Besides, when a third account address sends a transaction request, a node verification transaction request is received, and when the third account address is in a preset blacklist, the node verification transaction is an invalid transaction. According to the method provided by the invention, the user can retrieve the user assets under the condition that the key is lost, and the account security is protected through the blacklist. 本申请提供一种基于区块链的信息处理方法、装置、设备及存储介质。该方法包括