Digital asset circulation method and device and computer readable storage medium

The embodiment of the invention discloses a digital asset circulation method. The method comprises the following steps: receiving a first operation request for a first digital asset in a first target account of a first block chain; based on the first operation request, performing target operation on the first digital asset through a first chain edge service of the first node, so that the first digital asset cannot be changed through the first target account; sending a second operation request carrying change information of the first digital assets to a second node of the second block chain through the first chain edge service; wherein the second operation request is used for indicating the transfer device to transfer a second digital asset to a second target account of the third block chain through a second chain edge service of the second node; thus, the processing logic for realizing digital asset circulation between different block chains is packaged into the chain edge service, cross-chain transaction bet