SYSTEM AND METHOD FOR CONTROLLING RESTRICTIONS ON DIGITAL ASSET

摘要

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for controlling restrictions on digital asset. One of the methods includes: detecting a triggering event for derestricting a quantity of a digital asset associated with a tangible asset, wherein the tangible asset corresponds to a blockchain contract deployed on a blockchain; generating a blockchain transaction for transferring the quantity of the digital asset from a restricted blockchain account associated with the blockchain to an unrestricted blockchain account associated with the blockchain, wherein the blockchain transaction invokes the blockchain contract corresponding to the tangible asset; and sending the blockchain transaction to a blockchain node for adding to the blockchain.