Cross-chain asset transfer method, computer equipment and storage medium

Abstract

The invention provides a cross-chain asset transfer method, computer equipment and a storage medium, and the method comprises the steps: executing a first asset cross-chain transaction, storing a first asset which is to be transferred to a second block chain and of which the asset type is a second asset type into a first asset cross-chain contract of a current block chain, and taking the first evidence hash of the first asset as a newly added leaf node of a first cross-chain single-class asset tree corresponding to the second block chain and the second asset type in a first cross-chain asset aggregation tree of the first asset cross-chain contract so as to update the first cross-chain asset aggregation tree. According to the method and the device, transfer of various different types of assets among multiple block chains can be realized only by maintaining one tree in the contract, so that the problems of data redundancy, inconvenience in tree root query and the like in a scene of transferring various types of assets in multiple block chains are solved.

Description

technical field [0001] This application relates to the technical field of blockchain, and specifically relates to a cross-chain asset transfer method, computer equipment and storage media. Background technique [0002] The existing blockchain cross-chain solutions can be roughly divided into side chains, relays, notary mechanisms, hash locks and other categories. Each category of solutions has its own security risk issues. In the event of being held hostage by a hacker, the user's assets will often be lost. [0003] For relay schemes, one way to solve the above-mentioned security risks in the field is to synchronize all the block headers of the endorsement chain to the target chain, so that the target chain can be verified based on the block headers. The disadvantage of this method is that for a blockchain with a large number of accumulated blocks, the amount of data in the block header is too large. For example, the current data volume of all block header data in Ethereu...

AI Technical Summary

Problems solved by technology

[0008] However, in some special application scenarios, such as digital asset transactions of online games, etc., for example, account ownership of cross-chain game a, game currency of game b, and game props of game c are required between 100 blockchains When there are multiple digital assets such as ownership, Q coins, digital renminbi, etc., it is impossible to solve the problem through the above-mentioned solution applicable to a single asset

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