Data processing method and device based on block chain, equipment and medium

The embodiment of the invention provides a data processing method and device based on a block chain, equipment and a medium. The method comprises the following steps: receiving an address recovery request for a target object sent by a social recovery object; the social recovery object is used for resetting a contract management address corresponding to the asset hosting contract, the asset hosting contract is used for managing digital assets of the target object in the block chain, key information corresponding to the contract management address is held by the target object, and the key information is associated with the asset management address of the target object in the block chain; calling address reset interfaces in the asset hosting contract according to the address recovery request, and counting the calling number corresponding to the address reset interfaces; and if the calling number is greater than or equal to the number threshold, updating a contract management address corresponding to the asset ho