WO2022052091A1

WO2022052091A1 - Asset and data cross-chain method and system based on blockchain

Info

Publication number: WO2022052091A1
Application number: PCT/CN2020/115016
Authority: WO
Inventors: 李宝珠; 朱浩冰; 吕伟康; 周英
Original assignee: 天津理工大学; 深圳前海益链网络科技有限公司; 天津工业大学
Priority date: 2020-09-14
Filing date: 2020-09-14
Publication date: 2022-03-17

Abstract

Disclosed are an asset and system cross-chain method and system based on a blockchain. The asset cross-chain method based on a blockchain comprises: a relay chain obtaining asset transaction information; adding asset transaction information to multiple nodes in the relay chain according to a cross-chain contract, and determining the node to which the asset transaction information is first successfully added as a first execution trigger node; the first execution trigger node creating an address for asset transaction to a second blockchain; other nodes in the relay chain except for the first execution trigger node performing asset transaction signature operation according to the address for asset transaction to the second blockchain, and obtaining a first multi-signature address; the first execution trigger node broadcasting a transaction to the second blockchain according to the first multi-signature address and asset transaction information, and simultaneously receiving an instruction confirming that the second blockchain has completed the transaction, which can safely and conveniently achieve asset transfer. By using the method and system in the present invention, asset transfer, data transfer, and mutual access between chains can be safely and conveniently achieved.

Description

A blockchain-based asset and data cross-chain method and system

technical field

The present invention relates to the technical field of blockchain, in particular to a method and system for cross-chain assets and data based on blockchain.

Background technique

Blockchain is a general digital ledger, which circulates in a decentralized network and plays a central role. It is an innovative application model of a new generation of technology in the Internet era. Among the many problems faced by the blockchain, the interoperability between the blockchains greatly limits the application space of the blockchain. Regardless of whether it is a public chain or a private chain, cross-chain technology is the key to realizing the Internet of Value. It is a good medicine to save the blockchain from scattered islands and a bridge for the expansion and connection of the blockchain.

At present, it is extremely difficult for existing cross-chain technologies to simultaneously realize cross-chain assets, cross-chain data, and mutual calls between chains. For example: when assets are cross-chain, assets in chain A cannot be transferred to chain B; when data is cross-chain, data in chain A cannot be transferred to chain B; when calling between chains, related data in chain B cannot be accessed from chain A. Therefore, how to realize the cross-chain of assets and data in the blockchain is an urgent problem to be solved.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a blockchain-based asset and data cross-chain method and system, which can safely and conveniently realize asset transfer, data transfer and mutual access between chains.

For achieving the above object, the present invention provides the following scheme:

A blockchain-based asset cross-chain approach, including:

The relay chain obtains asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain;

Multiple nodes in the relay chain add the asset transaction information according to the cross-chain contract, and determine the first node that successfully adds the asset transaction information as the first execution trigger node;

the first execution triggering node to create an address for performing asset transactions to the second blockchain;

other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address for performing asset transactions to the second blockchain to obtain a first multi-signature address;

The first execution triggering node broadcasts a transaction to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.

Optionally, multiple nodes in the relay chain add the asset transaction information according to the cross-chain contract, and determine the first node that successfully adds the asset transaction information as the first execution trigger node, which also includes: :

The nodes of the relay chain sequentially perform filtering and judging operations on the asset transaction information and whether it conforms to the cross-chain rules, so as to obtain filtered asset transaction information that conforms to the cross-chain rules.

The present invention also provides a blockchain-based asset cross-chain system, including:

The asset transaction information acquisition module is used to realize the relay chain to acquire the asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain;

The first execution trigger node determination module is used to realize that multiple nodes in the relay chain add the asset transaction information according to the cross-chain contract, and determine the first node that successfully adds the asset transaction information as the first execution trigger node;

a first address creation module, configured to enable the first execution trigger node to create an address for asset transactions to the second blockchain;

The first signature module is used to realize that other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address of the asset transaction to the second blockchain, and obtain the first signature operation. One multi-signature address;

The first transaction broadcast module is used to realize that the first execution trigger node broadcasts transactions to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives the second block The chain completes the instructions for transaction confirmation.

Optionally, also include:

The first preprocessing module is used to realize that the node of the relay chain sequentially performs filtering processing on the asset transaction information and judging whether it conforms to the cross-chain rule, and obtains the filtered asset transaction information that conforms to the cross-chain rule.

The present invention also provides a blockchain-based data cross-chain method, including:

The relay chain obtains data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain;

Multiple nodes in the relay chain add the data transaction information according to the cross-chain contract, and determine the first node that successfully adds the data transaction information as the second execution trigger node;

The second execution triggers the node to create an address for performing data transactions on the second blockchain;

other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address for performing data transactions to the second blockchain to obtain a second multi-signature address;

The second execution triggering node performs transaction broadcast to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.

Optionally, a plurality of nodes in the relay chain add the data transaction information according to the cross-chain contract, and determine the node that successfully adds the data transaction information first as the second execution trigger node, which also includes: :

The nodes of the relay chain sequentially perform filtering and judging operations on the data transaction information and whether it conforms to the cross-chain rules, so as to obtain filtered data transaction information that conforms to the cross-chain rules.

The present invention also provides a blockchain-based data cross-chain system, including:

a data transaction information acquisition module, used to realize the relay chain to acquire data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain;

The second execution triggering node determination module is used to realize that multiple nodes in the relay chain add the data transaction information according to the cross-chain contract, and determine the node that successfully adds the data transaction information first as the second execution trigger node;

A second address creation module, configured to enable the second execution trigger node to create an address for performing data transactions on the second blockchain;

The second signature module is used to realize that other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address of the data transaction to the second blockchain, and obtain the first Two multi-signature addresses;

The second transaction broadcasting module is used to realize that the second execution trigger node broadcasts transactions to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receives the second block The chain completes the instructions for transaction confirmation.

Optionally, also include:

The second preprocessing module is used to realize that the node of the relay chain sequentially performs filtering processing on the data transaction information and judging whether it conforms to the cross-chain rule, and obtains the filtered data transaction information that conforms to the cross-chain rule.

The present invention also provides a block chain-based data access method, comprising:

The relay chain obtains data access information; the data access information is data information to be accessed by the second blockchain to the first blockchain;

Multiple nodes in the relay chain add the data access information according to the cross-chain contract, and determine the first node that successfully adds the data access information as the third execution trigger node;

The third execution trigger node obtains specified transaction information corresponding to the data access information in the first blockchain, and creates second data access information according to the specified transaction information;

other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address;

The third execution triggering node performs transaction broadcast to the second blockchain according to the third multi-signature address and the data transaction information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.

The present invention also provides a blockchain-based data access system, comprising:

a data access information acquisition module, configured to implement the relay chain to acquire data access information; the data access information is data information to be accessed by the second blockchain to the first blockchain;

The third execution triggering node determination module is used to realize that multiple nodes in the relay chain add the data access information according to the cross-chain contract, and determine the first node that successfully adds the data access information as the third execution trigger node;

The second data access information creation module is configured to enable the third execution trigger node to obtain specified transaction information corresponding to the data access information in the first blockchain, and to create a third execution trigger node according to the specified transaction information 2. Data access information;

A third address creation module, configured to realize that other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address;

A third transaction broadcasting module, configured to enable the third execution trigger node to broadcast transactions to the second blockchain according to the third multi-signature address and the data transaction information, and simultaneously receive the second blockchain The chain completes the instructions for transaction confirmation.

According to the specific embodiments provided by the present invention, the present invention discloses the following technical effects:

The invention proposes a method and system for asset cross-chain based on block chain. The relay chain obtains asset transaction information; multiple nodes in the relay chain add asset transaction information according to the cross-chain contract, and the first successful asset will be added. The node of transaction information is determined as the first execution trigger node; the first execution trigger node creates an address for asset transaction to the second blockchain; other nodes in the relay chain except the first execution trigger node The first multi-signature address is obtained by performing the asset transaction signature operation on the address of the chain where the asset transaction is performed; the first execution trigger node broadcasts the transaction to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives the second block. The chain completes the transaction confirmation instructions, which can safely and conveniently realize the transfer of assets.

The invention proposes a method and system for data cross-chain based on block chain. The relay chain obtains data transaction information; multiple nodes in the relay chain add data transaction information according to the cross-chain contract, and add successful data first. The node of the transaction information is determined as the second execution trigger node; the second execution trigger node creates an address for data transaction to the second block chain; other nodes in the relay chain except the second execution trigger node The second multi-signature address is obtained by performing the data transaction signature operation on the address of the chain for data transaction; the second execution trigger node broadcasts the transaction to the second blockchain according to the second multi-signature address and the data transaction information, and receives the second block at the same time. The chain completes the transaction confirmation instructions, which can realize data transfer safely and conveniently.

The present invention proposes a data access method and system based on blockchain. The relay chain obtains data access information; multiple nodes in the relay chain add data access information according to the cross-chain contract, and the first successful data access will be added. The node of the information is determined as the third execution trigger node; the third execution trigger node obtains the specified transaction information corresponding to the data access information in the first blockchain, and creates the second data access information according to the specified transaction information; the relay chain The other nodes except the third execution trigger node perform data transaction signature operation according to the second data access information to obtain the third multi-signature address; the third execution trigger node sends the second block to the second block according to the third multi-signature address and the data access information. The chain broadcasts the transaction, and at the same time receives the second blockchain to complete the transaction confirmation instruction, which can safely and conveniently realize the mutual access between the blockchains.

Instruction drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings required in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some of the present invention. In the embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative labor.

1 is a schematic diagram of the networking architecture of a relay chain cross-chain solution according to an embodiment of the present invention;

FIG. 2 is a flowchart of a method for cross-chain assets based on blockchain in Embodiment 1 of the present invention;

3 is a structural diagram of a blockchain-based asset cross-chain system in Embodiment 1 of the present invention;

4 is a flowchart of a method for cross-chain data based on blockchain in Embodiment 2 of the present invention;

5 is a structural diagram of a blockchain-based data cross-chain system in Embodiment 2 of the present invention;

6 is a flowchart of a blockchain-based data access method in Embodiment 3 of the present invention;

FIG. 7 is a structural diagram of a blockchain-based data access system in Embodiment 3 of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The purpose of the present invention is to provide a blockchain-based asset and data cross-chain method and system, which can safely and conveniently realize asset transfer, data transfer, and mutual access between chains.

In order to make the objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

Example 1

FIG. 2 is a flowchart of a method for cross-chain assets based on blockchain in an embodiment of the present invention. As shown in FIG. 2 , a method for cross-chain assets based on blockchain includes:

Step 101: The relay chain obtains asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain.

Step 102 : The nodes of the relay chain sequentially perform filtering and judging operations on the asset transaction information and whether it conforms to the cross-chain rules, to obtain filtered asset transaction information that conforms to the cross-chain rules.

Step 103: Multiple nodes in the relay chain add asset transaction information according to the cross-chain contract, and determine the node that first adds the successful asset transaction information as the first execution trigger node.

Step 104: The first execution triggers the node to create an address for asset transaction to the second blockchain.

Step 105: Other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address for asset transaction to the second blockchain to obtain a first multi-signature address.

Step 106: The first execution trigger node broadcasts the transaction to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives an instruction from the second blockchain to complete the transaction confirmation.

FIG. 3 is a structural diagram of a blockchain-based asset cross-chain system in an embodiment of the present invention. As shown in Figure 3, a blockchain-based asset cross-chain system includes:

The asset transaction information acquisition module 201 is used for realizing the relay chain to acquire asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain.

The first preprocessing module 202 is used to realize that the nodes of the relay chain sequentially filter the asset transaction information and determine whether it conforms to the cross-chain rule, and obtain filtered asset transaction information that conforms to the cross-chain rule.

The first execution trigger node determination module 203 is used to realize that multiple nodes in the relay chain add asset transaction information according to the cross-chain contract, and determine the node that first adds successful asset transaction information as the first execution trigger node.

The first address creation module 204 is configured to enable the first execution trigger node to create an address for performing asset transactions to the second blockchain.

The first signature module 205 is used to realize that other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address for asset transaction to the second blockchain to obtain a first multi-signature address.

The first transaction broadcast module 206 is configured to implement the first execution trigger node to broadcast the transaction to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receive an instruction from the second blockchain to complete the transaction confirmation.

Specifically, as shown in Figure 1:

Someone transfers 30 token-X to the mAddrA multi-signature address in the A chain of the relay chain, and the transaction Ta specifies the transfer to the YYYYYYYYYYYY address in the B chain.

Any node participating in the generation of the multi-signature address mAddrA in the relay chain receives the transaction Ta (the transaction has been confirmed by the network), and will submit the cross-chain rule engine for filtering, which conforms to the cross-chain rules. The engine drives the relay chain node to call the cross-chain business. The contract (source chain + source transaction id + source address, destination chain, destination address, etc.) participates in cross-chain trigger node competition.

Multiple relay chain nodes will compete to execute cross-chain transactions. Using the serial feature of relay chain cross-chain business contract calls to execute, can ensure that only one node can become cross-chain (first add cross-chain transactions to the state of the cross-chain contract). that node) transaction execution trigger node (exeNode).

The node exeNode, which is confirmed as the triggering node of transaction execution, first creates an mAddrB address in the B chain to transfer 30 token-x to the YYYYYYYYYYY address of the B chain (in actual operation, a cross-chain transfer transaction fee may be charged, and the token- X can use the pre-generated/temporarily generated transaction Tb, and call the signature contracts of the other four nodes in turn to complete the multi-signature action of the transaction Tb.

After the transaction triggers the node exeNode to obtain the signed multi-signature address transfer transaction Tb, it broadcasts the transaction to the B chain.

After the transaction Tb is confirmed by the B chain, the transaction triggers the node exeNode to call the cross-chain business contract, and writes the transaction information (chain information, transaction id, block, etc.) in the B-chain into the cross-chain business contract to complete the entire cross-chain business.

Example 2

FIG. 4 is a flowchart of a blockchain-based data cross-chain method according to an embodiment of the present invention. As shown in FIG. 4 , a blockchain-based data cross-chain method includes:

Step 301: The relay chain obtains data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain.

Step 302 : The nodes of the relay chain sequentially perform filtering and judging operations on whether the data transaction information conforms to the cross-chain rules, and obtain filtered data transaction information that conforms to the cross-chain rules.

Step 303: Multiple nodes in the relay chain add data transaction information according to the cross-chain contract, and determine the node that first adds the successful data transaction information as the second execution trigger node.

Step 304: The second execution triggers the node to create an address for data transaction to the second blockchain.

Step 305 : other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address of the data transaction to the second blockchain to obtain a second multi-signature address.

Step 306: The second execution trigger node broadcasts the transaction to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receives an instruction from the second blockchain to complete the transaction confirmation.

FIG. 5 is a structural diagram of a blockchain-based data cross-chain system in an embodiment of the present invention. As shown in Figure 5, a blockchain-based data cross-chain system includes:

The data transaction information acquisition module 401 is used to realize the relay chain to acquire data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain.

The second preprocessing module 402 is used to realize that the nodes of the relay chain sequentially perform filtering processing on the data transaction information and judging whether it conforms to the cross-chain rule, so as to obtain filtered data transaction information that conforms to the cross-chain rule.

The second execution trigger node determination module 403 is used to realize that multiple nodes in the relay chain add data transaction information according to the cross-chain contract, and determine the node that first adds the successful data transaction information as the second execution trigger node.

The second address creation module 404 is configured to enable the second execution trigger node to create an address for performing data transactions on the second blockchain.

The second signature module 405 is used to realize that other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address of the data transaction to the second blockchain to obtain a second multi-signature address.

The second transaction broadcast module 406 is configured to implement the second execution trigger node to broadcast the transaction to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receive the instruction of the second blockchain to complete the transaction confirmation.

Specifically, as shown in Figure 1:

Before the certificate data is uploaded to the chain, it is determined that it is cross-chain data. When the write transaction Ta is created, the mAddrA address is added to the output address, and the transaction Ta is broadcast on the A chain.

Any node participating in the generation of the multi-signature address mAddrA in the relay chain receives the transaction Ta (the transaction has been confirmed by the network), and will submit the cross-chain rule engine for filtering, which conforms to the cross-chain rules. The engine drives the relay chain node to call the cross-chain business. Contract (source chain + source transaction id + source address, write data information, etc.), participate in cross-chain trigger node competition.

The node exeNode, which is confirmed as the triggering node of the transaction execution, first creates a transaction Tb that writes data to the B chain at the mAddrB address in the B chain (Tb contains all the key contents of the transaction Ta), and sequentially calls the signatures of the other four nodes The contract completes the multi-signature action of the transaction Tb.

Example 3

FIG. 6 is a flowchart of a blockchain-based data access method in an embodiment of the present invention. As shown in FIG. 6 , a blockchain-based data access method includes:

Step 501: The relay chain obtains data access information; the data access information is data information to be accessed by the second blockchain to the first blockchain.

Step 502: Multiple nodes in the relay chain add data access information according to the cross-chain contract, and determine the node that first adds the successful data access information as the third execution trigger node.

Step 503: The third execution trigger node acquires specified transaction information corresponding to the data access information in the first blockchain, and creates second data access information according to the specified transaction information.

Step 504 : other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address.

Step 505: The third execution trigger node broadcasts the transaction to the second blockchain according to the third multi-signature address and the data access information, and simultaneously receives an instruction from the second blockchain to complete the transaction confirmation.

FIG. 7 is a structural diagram of a blockchain-based data access system in an embodiment of the present invention. As shown in Figure 7, a blockchain-based data access system includes:

The data access information acquisition module 601 is used to realize the relay chain to acquire data access information; the data access information is the data information to be accessed by the second block chain to the first block chain.

The third execution trigger node determination module 602 is used to realize that multiple nodes in the relay chain add data access information according to the cross-chain contract, and determine the node that first adds successful data access information as the third execution trigger node.

The second data access information creation module 603 is configured to realize that the third execution trigger node obtains the specified transaction information corresponding to the data access information in the first blockchain, and creates the second data access information according to the specified transaction information.

The third address creation module 604 is used to realize that other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address.

The third transaction broadcasting module 605 is used to realize that the third execution trigger node broadcasts the transaction to the second blockchain according to the third multi-signature address and the data access information, and simultaneously receives the instruction that the second blockchain completes the transaction confirmation.

Specifically, as shown in Figure 1,

B-chain users create a cross-chain access transaction Tb (including necessary information such as the block height/transaction id/objectID of the destination chain to be accessed), and broadcast the transaction in the B-chain network.

Any node participating in the generation of the multi-signature address mAddrA in the relay chain receives the transaction Tb (the transaction has been confirmed by the network), and will submit the cross-chain rule engine for filtering, in line with the cross-chain rules, the engine drives the relay chain node to call the cross-chain business The contract (source chain + source transaction id + source address, data information to be accessed) participates in cross-chain trigger node competition.

The node exeNode that is confirmed as the trigger node of transaction execution, its rule engine drives the A chain node to obtain the specified transaction Ta in the A chain, and creates the transaction Tb' according to the key information in the obtained transaction Ta, and sequentially calls the remaining cross-chain nodes. Complete multi-signature transaction signing.

After the transaction triggers the node exeNode to obtain the signed multi-signature address transfer transaction Tb', it broadcasts the transaction to the B chain.

After the transaction Tb' is confirmed by the B chain, the transaction triggers the node exeNode to call the cross-chain business contract, and writes the transaction information (chain information, transaction id, block, etc.) in the B-chain into the cross-chain business contract to complete the entire cross-chain business. .

The invention realizes the problems of asset transfer, data transfer and mutual access between chains. The relay chain is a blockchain network that can be operated by multiple parties, and all stakeholders can participate in the deployment and operation of the relay chain network; there is competition to avoid centralization, multiple nodes, and single-point accidents; no manual intervention is required, Various cross-chain business can be automatically completed; strong security: the cross-chain rule engine acts as a firewall, and black and white lists can be used to control cross-chain business; cross-chain transaction mapping relationships are permanently managed in cross-chain contracts to avoid the possibility of centralization Existing data loss problem; good scalability, a relay chain can connect to N business chains and support its cross-chain needs.

The principles and implementations of the present invention are described herein using specific examples. The descriptions of the above embodiments are only used to help understand the method and the core idea of the present invention; meanwhile, for those skilled in the art, according to the present invention There will be changes in the specific implementation and application scope. In conclusion, the contents of this specification should not be construed as limiting the present invention.

The above embodiments are provided for the purpose of describing the present invention only, and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims. Various equivalent replacements and modifications made without departing from the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

A blockchain-based asset cross-chain method, characterized in that it includes:

The relay chain obtains asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain;

Multiple nodes in the relay chain add the asset transaction information according to the cross-chain contract, and determine the first node that successfully adds the asset transaction information as the first execution trigger node;

the first execution triggering node to create an address for performing asset transactions to the second blockchain;

other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address for performing asset transactions to the second blockchain to obtain a first multi-signature address;

The first execution triggering node broadcasts a transaction to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.
The blockchain-based asset cross-chain method according to claim 1, wherein the asset transaction information is added by a plurality of nodes in the relay chain according to the cross-chain contract, and the first one that is successfully added is added. The node of the asset transaction information is determined as the first execution trigger node, which also includes:

The nodes of the relay chain sequentially perform filtering and judging operations on the asset transaction information and whether it conforms to the cross-chain rules, so as to obtain filtered asset transaction information that conforms to the cross-chain rules.
A blockchain-based asset cross-chain system, characterized in that it includes:

The asset transaction information acquisition module is used to realize the relay chain to acquire the asset transaction information; the asset transaction information is the asset transaction information to be transferred from the first blockchain to the second blockchain;

The first execution trigger node determination module is used to realize that multiple nodes in the relay chain add the asset transaction information according to the cross-chain contract, and determine the first node that successfully adds the asset transaction information as the first execution trigger node;

a first address creation module, configured to enable the first execution trigger node to create an address for performing asset transactions to the second blockchain;

The first signature module is used to realize that other nodes in the relay chain except the first execution trigger node perform an asset transaction signature operation according to the address of the asset transaction to the second blockchain, and obtain the first signature operation. One multi-signature address;

The first transaction broadcast module is used to realize that the first execution trigger node broadcasts transactions to the second blockchain according to the first multi-signature address and the asset transaction information, and simultaneously receives the second block The chain completes the instructions for transaction confirmation.
The blockchain-based asset cross-chain system according to claim 3, further comprising:

The first preprocessing module is used to realize that the node of the relay chain sequentially performs filtering processing on the asset transaction information and judging whether it conforms to the cross-chain rule, and obtains the filtered asset transaction information that conforms to the cross-chain rule.
A blockchain-based data cross-chain method, comprising:

The relay chain obtains data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain;

Multiple nodes in the relay chain add the data transaction information according to the cross-chain contract, and determine the first node that successfully adds the data transaction information as the second execution trigger node;

The second execution triggers the node to create an address for performing data transactions on the second blockchain;

other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address for performing data transactions to the second blockchain to obtain a second multi-signature address;

The second execution triggering node broadcasts a transaction to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.
The blockchain-based data cross-chain method according to claim 5, wherein the data transaction information is added by a plurality of nodes in the relay chain according to the cross-chain contract, and the first one that is successfully added is added. The node of the data transaction information is determined as the second execution trigger node, which also includes:

The nodes of the relay chain sequentially perform filtering and judging operations on the data transaction information and whether it conforms to the cross-chain rules, so as to obtain filtered data transaction information that conforms to the cross-chain rules.
A blockchain-based data cross-chain system, characterized in that it includes:

a data transaction information acquisition module, used to realize the relay chain to acquire data transaction information; the data transaction information is the data transaction information to be transferred from the first blockchain to the second blockchain;

The second execution triggering node determination module is used to realize that multiple nodes in the relay chain add the data transaction information according to the cross-chain contract, and determine the node that successfully adds the data transaction information first as the second execution trigger node;

A second address creation module, configured to enable the second execution trigger node to create an address for data transaction to the second blockchain;

The second signature module is used to realize that other nodes in the relay chain except the second execution trigger node perform a data transaction signature operation according to the address of the data transaction to the second blockchain, and obtain the first Two multi-signature addresses;

The second transaction broadcasting module is used to realize that the second execution trigger node broadcasts transactions to the second blockchain according to the second multi-signature address and the data transaction information, and simultaneously receives the second block The chain completes the instructions for transaction confirmation.
The blockchain-based data cross-chain system according to claim 7, further comprising:

The second preprocessing module is used to realize that the node of the relay chain sequentially performs filtering processing on the data transaction information and judging whether it conforms to the cross-chain rule, and obtains the filtered data transaction information that conforms to the cross-chain rule.
A blockchain-based data access method, characterized in that it includes:

The relay chain obtains data access information; the data access information is data information to be accessed by the second blockchain to the first blockchain;

Multiple nodes in the relay chain add the data access information according to the cross-chain contract, and determine the first node that successfully adds the data access information as the third execution trigger node;

The third execution trigger node obtains specified transaction information corresponding to the data access information in the first block chain, and creates the second data access information according to the specified transaction information;

other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address;

The third execution trigger node broadcasts a transaction to the second blockchain according to the third multi-signature address and the data access information, and simultaneously receives an instruction from the second blockchain to complete transaction confirmation.
A blockchain-based data access system, characterized in that it includes:

a data access information acquisition module, configured to implement the relay chain to acquire data access information; the data access information is data information to be accessed by the second blockchain to the first blockchain;

The third execution triggering node determination module is used to realize that multiple nodes in the relay chain add the data access information according to the cross-chain contract, and determine the first node that successfully adds the data access information as the third execution trigger node;

The second data access information creation module is configured to enable the third execution trigger node to obtain specified transaction information corresponding to the data access information in the first blockchain, and to create a third execution trigger node according to the specified transaction information 2. Data access information;

A third address creation module, configured to realize that other nodes in the relay chain except the third execution trigger node perform a data transaction signature operation according to the second data access information to obtain a third multi-signature address;

A third transaction broadcasting module, configured to enable the third execution trigger node to broadcast transactions to the second blockchain according to the third multi-signature address and the data access information, and simultaneously receive the second blockchain The chain completes the instructions for transaction confirmation.