NL2026378B1 - Blockchain network system - Google Patents
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Abstract
This application provides a blockchain network system, including a public chain, a parent chain, and a parallel chain. The public chain is a peer-to-peer network structure composed of a plurality of nodes, and may provide a unified interface specification for the external. The parent chain is a blockchain network accessing the public chain. The parallel chain is composed of some nodes in the public chain or the parent chain. A node in the parallel chain is provided with an access interface of the parent chain, to interconnect the public chain and the parent chain in a bridging manner. Moreover, the parallel chain has complete functions of the parent chain, and may store all information on the parent chain. In this application, some nodes in the public chain or the parent chain are transformed into the parallel chain, so that the parent chain and the public chain, or two parent chains may interconnect with each other, to complete a cross-chain transaction. A large-scale transformation to the parent chain may be avoided by using the parallel chain, thus resolving a problem that an existing blockchain network cannot communicate and interact with other blockchain networks.
Description
EP&C ref: P34726NL00 ! Our Ref : OC183554NL-AWP0003
[0001] This application relates to the technical field of network transactions, and in particular, to a blockchain network system.
[0002] A blockchain technology is decentralized system thinking, and can create a relatively objective non-repudiation digital environment in a well-known manner. The blockchain technology can make sure that network information cannot be modified once being published. For example, if a transaction occurs in a blockchain network, a node in the blockchain network may record content of the transaction in a generated block, and broadcast block data in the whole network; and other nodes in the network store the block data synchronously or asynchronously, to form a blockchain that cannot be modified. Applications of the blockchain technology rely on a blockchain system. The blockchain system includes a plurality of manners according to fields to which the blockchain technology is applied and a scale of a formed decentralized network. For example, using a bitcoin network and an Ethereum network as representatives, the blockchain technology is applied to a public chain of a whole network; is applied to an industry chain in a particular field; and is applied to a federated chain in a particular region.
[0003] In view of the above, existing blockchain network systems are all designed for an application scenario, and no effective mechanism is unified between different chains (blockchain platforms) to communicate and interact. To be specific, data and application islanding effects are caused. In actual applications, a plurality of blockchain platforms provide different capability sets to implement different transactions. However, due to the data and application 1slanding effects, capabilities that can be provided by different chains are merely limited in this field. Meanwhile, due to endogeneity, work and content completed by the blockchain platform are all based on scenarios and applications within the blockchain, and the blockchain platform merely supports external transactions. In other words, it 1s difficult for an existing blockchain system to implement cross-blockchain platform (cross-chain) and cross-domain (cross-domain) transactions.
EP&C ref: P34726NL00 2 Our Ref : OC183554NL-AWP0003
[0004] To communicate and interact between different blockchain networks and complete a cross-chain transaction, the existing blockchain system may provide relay services, such as a solution of BTC Relay that relays a bitcoin blockchain and an Ethereum smart contract. However, the existing solutions are all achieving relay services in a one-to-one manner. However, there are various types of cross-chain transactions because there are various types of actual transactions. It 1s difficult to formulate a one-to-one relaying solution for each type of cross-chain transaction. Therefore, how to provide a unified blockchain system to support cross-chain transactions and to communicate and interact between different chains becomes a technical problem that needs to be urgently resolved in this field.
[0005] This application provides a blockchain network system, to resolve a problem that an existing blockchain network cannot communicate and interact with other blockchain networks.
[0006] According to one aspect, this application provides a blockchain network system, including a public chain and a parent chain accessing the public chain, where the parent chain includes a third-party blockchain that can access the public chain and has a dedicated interface; the system further includes: a parallel chain composed of some nodes in the public chain and/or the parent chain;
[0007] a node in the parallel chain is configured to be able to execute all data operations of the nodes in the public chain, and has all functions and information of the nodes in the public chain; the node in the parallel chain is further configured to be able to execute all data operations of the nodes in the parent chain, and has all functions and information of the nodes in the parent chain;
[0008] the node in the parallel chain 1s configured with a public chain interface and a parent chain-dedicated interface; and the parallel chain completes an interconnection operation between the public chain and the parent chain in a bridging manner.
[0009] Optionally, nodes on the parallel chain are voted in the public chain from some nodes in the public chain;
[0010] or the nodes on the parallel chain are composed of some nodes in the parent chain that are recommended by the parent chain and are acknowledged by the public chain;
EP&C ref: P34726NL00 3 Our Ref : OC183554NL-AWP0003
[0011] or some of the nodes on the parallel chain are voted from the nodes in the public chain, and the other nodes are composed of the nodes in the parent chain that are recommended by the parent chain and are acknowledged by the public chain.
[0012] Optionally, the parallel chain is a multi-stage network structure composed of a plurality of nodes.
[0013] Optionally, the parallel chain is a hybrid-chain network structure composed of a plurality of nodes, and the node 1n the parallel chain connects a plurality of parent chains or a plurality of public chains in a parallel manner.
[0014] Optionally, after the parent chain accesses the public chain, an interface node is preferentially selected, and/or a node adjacent to the interface node is used as a node in the parallel chain.
[0015] According to another aspect, this application further provides a blockchain network system, including a chain group composed of a plurality of third-party blockchain networks and a public chain distributed in the chain group, the third-party blockchain networks having respective dedicated interfaces, where the system further includes: a parallel chain composed of some nodes in the public chain and/or the third-party blockchain network;
[0016] the parallel chain is disposed between the public chain and an accessing third-party blockchain network, or is disposed between any two third-party networks that connect with each other;
[0017] anode in the parallel chain is configured to be able to execute all data operations of the nodes 1n the public chain, and has all functions and information of the nodes in the public chain; the node in the parallel chain 1s further configured to be able to execute all data operations of nodes in a connected third-party blockchain, and has all functions and information of the nodes in the connected third-party blockchain;
[0018] the node in the parallel chain is configured with a public chain interface and an interface dedicated to the third-party blockchain network; and the parallel chain completes an interconnection operation between the public chain and the third-party blockchain or between two third-party blockchain networks in a bridging manner.
[0019] Optionally, the blockchain system further includes an industry chain and a federated chain that meet an interface specification of the public chain;
EP&C ref: P34726NL00 ‘ Our Ref.: OC183554NL-AWP0003
[0020] the industry chain and the federated chain access the public chain through the nodes in the public chain; and the industry chain and the federated chain have independent distributed storage functions, transaction functions, and accounting functions.
[0021] Optionally, the blockchain system further includes a subchain that is created based onan interface specification of the public chain;
[0022] all or some of nodes in the subchain come from the public chain, or the nodes in the subchain have an interface specification same as that of the nodes in the public chain; and the subchain has a distributed storage function, a transaction function, and an accounting function that are independent from the public chain.
[0023] Optionally, information stored by the nodes in the public chain includes: transaction information of the public chain, contract information of the public chain, data storage index information of the public chain, receipt recording information of the public chain, state recording information of the public chain, and transaction result index information.
[0024] Optionally, the contract information of the public chain is transaction information generated based on smart contracts provided by the public chain; and
[0025] the smart contracts provided by the public chain comprise a registration contract, an enrollment contract, and a deregistration contract of the third-party blockchain network, a transaction service contract, a value transformation contract, and a data storage contract.
[0026] It may be learned from the foregoing technical solutions that this application provides a blockchain network system, including a public chain, a parent chain, and a parallel chain. The public chain is a peer-to-peer network structure composed of a plurality of nodes, and may provide a unified interface specification for the external. The parent chain is a blockchain network accessing the public chain. The parallel chain is a peer-to-peer network composed of some nodes in the public chain or the parent chain. A node in the parallel chain is provided with an access interface of the parent chain, to interconnect the public chain and the parent chain in a bridging manner. Moreover, the parallel chain has complete functions of the parent chain, and may store all information on the parent chain. In this application, some nodes in the public chain or the parent chain are transformed into the parallel chain, so that the parent chain and the public chain, or two parent chains may
EP&C ref: P34726NL00 5 Our Ref.: OC183554NL-AWP0003 interconnect with each other; and data and information between different blockchains can be transferred through the bridging of the parallel chain. In this way, a cross-chain transaction is completed. A large-scale transformation to the parent chain may be avoided by using the parallel chain, thus resolving a problem that an existing blockchain network cannot communicate and interact with other blockchain networks.
[0027] To more clearly describe the technical solutions of this application, the accompanying drawings to be used in the embodiments are briefly illustrated below. Obviously, persons of ordinary skills 1n the art can also derive other accompanying drawings according to these accompanying drawings without an effective effort.
[0028] FIG. 1 is a schematic structural diagram of a blockchain network system based on a parallel chain according to this application;
[0029] FIG. 2 is a schematic flowchart of a cross-chain transaction according to this application;
[0030] FIG. 3 is a schematic flowchart of generating a blockchain by nodes according to this application;
[0031] FIG. 4 1s a schematic flowchart of generating blockchain data by nodes during a cross-chain transaction according to this application;
[0032] FIG. 5 is a schematic diagram of transferring blockchain data of a parallel chain that serves as a transaction target according to this application; and
[0033] FIG. 6 is a schematic structural diagram of another blockchain network system based on a parallel chain according to this application.
[0034] Embodiments are described below in detail, and examples thereof are shown in the accompanying drawings. When the descriptions below relate to the accompanying drawings, unless otherwise stated, same numbers in different accompanying drawings indicate same or similar elements. Implementations described in the following embodiments do not represent all implementations consistent with this application. Merely examples of a system and a method that are described in detail in the claims and in accordance with some aspects of this application are provided.
EP&C ref: P34726NL00 6 Our Ref.: OC183554NL-AWP0003
[0035] In technical solutions provided in this application, a blockchain network refers to a peer-to-peer network that has a decentralized application architecture. The blockchain network can perform distributed storage, public consensus, digital encryption, transaction accounting, and verifications within the network. In other words, the blockchain network is a transaction platform that covers a distributed technology, the cryptography, a P2P network architecture, and various consensus algorithms that may be applied.
[0036] In this application, a blockchain or blockchain data refers to accounting information generated based on transaction information when a transaction occurs in the blockchain network. That is, a plurality of transactions form block data, and a plurality of block data form a blockchain having a time stamp. The blockchain network includes nodes that establish peer-to-peer network connections with each other. Each node 1s configured with a corresponding consensus mechanism, such as a smart contract; and has a sufficient computing capability, to perform a transaction verification and an accounting process. Interface specifications conforming to an agreed standard are provided on the nodes, so that more nodes or other types of blockchain networks are accessed through the interface specifications.
[0037] In the technical solutions provided in this application, a public chain, a parent chain, and a parallel chain include a plurality of nodes, and each node may initiate a transaction and receive a transaction result. A transaction occurring between blockchain networks is referred to as a cross-chain transaction. For example, a transaction is initiated by the node in the parent chain, and a transaction object is the node in the public chain; or a transaction is initiated by one parent chain, and a transaction object is another parent chain.
[0038] According to a first aspect, refer to FIG. 1, FIG. 1 is a schematic structural diagram of a blockchain network system based on a parallel chain according to this application. It may be learned from FIG. 1 that the system provided in this application includes a public chain and a parent chain accessing the public chain. The parent chain includes a third-party blockchain that can access the public chain and has a dedicated interface. The system further includes: a parallel chain composed of some nodes in the public chain and/or the parent chain. A node 1n the parallel chain is configured to be able to execute all data operations of the nodes in the public chain, and has all functions and information of the nodes in the public
EP&C ref: P34726NL00 7 Our Ref.: OC183554NL-AWP0003 chain. The node in the parallel chain is further configured to be able to execute all data operations of the nodes in the parent chain, and has all functions and information of the nodes in the parent chain. The node in the parallel chain is configured with a public chain interface and a parent chain-dedicated interface. The parallel chain completes an interconnection operation between the public chain and the parent chain in a bridging manner.
[0039] In this application, the public chain is a peer-to-peer network structure composed of a plurality of nodes. Each node has a distributed storage function, a transaction function, and an accounting function. The nodes on the public chain provide a unified interface specification for the external. The parent chain has independent distributed storage functions, transaction functions, and accounting functions. The parent chain includes a third-party public chain, a third-party industry chain, a third-party federated chain, and a private chain that can access the public chain. The parallel chain is composed of some nodes in the public chain and/or the parent chain. The parallel chain interconnects the public chain and the parent chain in a bridging manner. The parallel chain has complete functions of the parent chain, and stores all information on the parent chain. The node in the parallel chain is provided with an access interface of the parent chain.
[0040] In this application, the referred public chain, parallel chain, and parent chain all refer to different blockchain networks that conform to a blockchain technology. In this application, unless otherwise stated, the public chain, the parent chain, and the parallel chain all refer to corresponding networks, that is, a public chain network, a parent chain network, and a parallel chain network. Each blockchain network may serve as an independent development platform, and provides a corresponding transaction verification and an accounting service for interior of the network. Standard interfaces and manners are defined and specified for the public chain, thus facilitating an effective interconnection to another blockchain, such as the parent chain. In this application, the public chain is capable of supporting cross-chain brokering, and further is capable of providing decentralized applications and a smart contract.
[0041] In addition to recording own blockchain information, the public chain may further be configured to store information digest, that is, transaction digest, of a corresponding
EP&C ref: P34726NL00 5 Our Ref.: OC183554NL-AWP0003 cross-chain transaction. Relevant content of the cross-chain transaction is recorded in a manner of formatted transaction data. Meanwhile, to reduce requirements on a distributed storage capability of the public chain, when recording some information, the public chain may further process information of a third-party blockchain again through a particular compression algorithm. For example, block data formed and stored in the public chain may include the following content: a block identifier (such as a sequence number, a time stamp, a block hash value, and a previous block hash value), block attribution (that is, a block generator), other block information (such as a random value, a difficulty value, and additional information), block weight, information digest (such as a transaction tree, a state tree, a receipt tree, and a data tree), transaction fees, rewards, sizes, and the like.
[0042] Further, in the blockchain network system provided in this application, information stored by the nodes in the public chain includes: transaction information of the public chain, contract information of the public chain, data storage index information of the public chain, receipt recording information of the public chain, state recording information of the public chain, and transaction result index information. The contract information of the public chain 1s transaction information generated based on smart contracts provided by the public chain. The smart contracts provided by the public chain include a registration contract, an enrollment contract, and a deregistration contract of the third-party blockchain network, a transaction service contract, a value transformation contract, and a data storage contract.
[0043] In this application, the parent chain refers to a blockchain network accessing the public chain network; the public chain provides a basic platform; and as accessing networks, there may be a plurality of parent chains that access the public chain, and the parent chains have respective functions and services. The blockchain network accessing the public chain may also be a blockchain network that is established based on network standards and interface specifications of the public chain. In other words, communication and service interworking can be directly performed with the public chain network. The blockchain network accessing the public chain may also be an independent third-party blockchain network, such as bitcoins or Ethereum in the existing blockchain network, or an industry chain and a federated chain developed in some industries, or even a private chain established for satisfying certain service requirement. These existing blockchain, industry chain,
EP&C ref: P34726NL00 ® Our Ref : OC183554NL-AWP0003 federated chain, and private chain generally cannot directly transact with each other or even cannot transact with the public chain network. Therefore, in this application, by using the parallel chain, the public chain may be connected to another network to which transactions cannot be directly performed.
[0044] The parallel chain may be composed of some nodes in the public chain network or the parent chain network; and by using the parallel chain, bridging may be performed between the public chain and another network to which transactions cannot be directly performed. In this application, for a network to which transactions cannot be directly performed, each blockchain network accessing the public chain network corresponds to a parallel chain. The parallel chain has complete functions of the corresponding blockchain network, and can bridge a transaction in the corresponding blockchain network to the public chain network. Therefore, in the technical solutions provided in this application, the parallel chain may be determined as an image of the corresponding blockchain network. Moreover, for ease of description, the corresponding blockchain network is referred to as a parent chain.
In this application, the parallel chain is composed of some nodes in the public chain network, and these nodes are also nodes in the parent chain. In this way, a transaction is performed between networks to which transactions cannot be directly performed.
[0045] In some embodiments provided in this application, nodes on the parallel chain are voted in the public chain from some nodes in the public chain; or the nodes on the parallel chain are composed of some nodes in the parent chain that are recommended by the parent chain and are acknowledged by the public chain; or some of the nodes on the parallel chain are voted from the nodes in the public chain, and the other nodes are composed of the nodes in the parent chain that are recommended by the parent chain and are acknowledged by the public chain. Further, after the parent chain accesses the public chain, an interface node is preferentially selected, and/or a node adjacent to the interface node is used as a node in the parallel chain.
[0046] In actual applications, after a blockchain network accesses the public chain network, the public chain may first execute a voting process. The voting process may determine which nodes in the public chain are nodes in the parallel chain. When voting the nodes in the parallel chain, a node that is in the public chain and is connected to a node adjacent to a node
EP&C ref: P34726NL00 10 Our Ref : OC183554NL-AWP0003 in the blockchain network may be preferentially selected, to prevent data from being sequentially transferred on a plurality of nodes, thereby improving data transmission efficiency. In this embodiment, using the node in the public chain as the node in the parallel chain may enable the node in the parallel chain to be directly configured with an interface specification and a smart contract of the public chain, without a large-scale transformation.
[0047] If the node in the parallel chain is the node recommended by the parent chain, the recommended node may be verified by using the public chain. Mainly verification content includes: whether the smart contract is supported to be configured, whether there is a synchronous data conversion capability, whether there are sufficient hardware configurations, and the like. After the verification by the public chain, the recommended node further needs to be transformed according to the interface specification of the public chain, so that the recommended node is adapted to a data transferring manner of the public chain, and has a data relaying function provided by the public chain. Through the manner of selecting the nodes 1n the parallel chain that includes recommending by the parent chain and verifying by the public chain, a cross-chain transaction may be performed by transforming some nodes in the parent chain, that is, interconnecting the public chain and the parent chain.
[0048] In addition, in several particular application scenarios, for example, when there are less nodes in the public chain and less spare nodes in the parent chain, the nodes in the parallel chain may be set as that some come from the nodes in the public chain and the other come from the nodes in the parent chain, so as to avoid occupying excessive computing resources of the public chain and the parent chain.
[0049] To adapt to a network manner of a current blockchain, in some embodiments of this application, the parallel chain is a hybrid-chain network structure composed of a plurality of nodes, and the node in the parallel chain connects a plurality of parent chains or a plurality of public chains in a parallel manner. In actual applications, because the parallel chain serves as a blockchain for bridging, to simplify a network layout process, there would not be a lot of nodes in the parallel chain. Therefore, in this application, the nodes in the parallel chain support to connect a plurality of parent chains and public chains in a parallel manner.
[0050] Therefore, in this application, the public chain may provide cross-chain relaying, verify a transaction, prove data, transfer an asset, execute the smart contract, and other work.
EP&C ref: P34726NL00 " Our Ref : OC183554NL-AWP0003 The public chain unifies external interface specifications, so that other blockchain networks can quickly access the public chain network. The public chain further provides basic blockchain platform capabilities, that is, quickly completes solution deployment and verifications, to complete a distributed storage process and an accounting process in the public chain network. In addition, as a basic platform, the public chain may further provide a public development function, so as to complete collaborative development and deployment of smart contracts of a plurality parallel chains at one time.
[0051] In actual applications, to complete a cross-chain transaction, the foregoing blockchain system first performs a cross-chain transaction between the parent chain and the public chain. In other words, the parent chain that serves as a transaction initiator first initiates a transaction. If a final transaction target is the public chain, a transaction result is directly returned by using the public chain. To be specific, as shown in FIG. 2, the cross-chain transaction is completed in this application according to the following steps.
[0052] SII: In a parent chain that serves as a transaction initiator, a transaction node creates a cross-chain transaction.
[0053] S12: The transaction node sends the cross-chain transaction to a parallel chain.
[0054] S13: The parallel chain synchronously converts the cross-chain transaction, and sends the same to a public chain.
[0055] S14: The public chain returns a transaction result to the parallel chain according to the received cross-chain transaction.
[0056] S15: The parallel chain converts the transaction result and sends the same to the transaction node, to complete a transaction.
[0057] In view of the above, for the cross-chain transaction between the parent chain and the public chain, because information exchange and data transmission between only two blockchain networks are involved, the cross-chain transaction is relatively simple. In the foregoing steps, synchronously converting the cross-chain transaction by the parallel chain mainly includes converting an information structure or a data structure, for example, generating block data conforming to a storage specification of the public chain based on block data in the parent chain.
[0058] A transaction performed in the blockchain network system provided in this
EP&C ref: P34726NL00 12 Our Ref : OC183554NL-AWP0003 application needs to be simultaneously verified and stored in two blockchain networks that are bridged in the parallel chain, to form two integral blockchains including the transaction, that is, to execute the accounting process. For the transaction occurring in the public chain, as shown in FIG. 3, the blockchain network system performs the following program steps.
[0059] S21: A node that serves as a transaction initiator generates block data according to actual transaction information.
[0060] S22: Broadcast the generated block data to a node that serves as a transaction target, and broadcast to an accountable node adjacent to a node that serves as a transaction initiator, the accountable node being a node randomly selected from nodes in a public chain.
[0061] S23: The accountable node that receives the block data executes an accounting process according to the block data, and continues to broadcast the block data to other accountable nodes, to form integral blockchain data.
[0062] For a cross-chain transaction occurring in the blockchain network system, as shown in FIG. 4, the blockchain network system performs the following program steps.
[0063] S31: In a parent chain, a node that serves as a transaction initiator generates transaction data of the parent chain according to actual transaction information.
[0064] S32: Broadcast the generated transaction data to a verification node in the parent chain, where the node generates block data and broadcasts the same to a node in a parallel chain.
[0065] S33: The node in the parallel chain determines a node that serves as a transaction target according to the block data of the parent chain, and initiates a transaction in the public chain according to a transaction rule of the public chain, to form integral blockchain data.
[0066] In the foregoing steps, to occupy less storage space in the parallel chain or the public chain, the blockchain data stores digest information of the blockchain data that is based on the parent chain.
[0067] Further, as shown in FIG. 5, for the cross-chain transaction occurring in the blockchain network system, if the node that serves as a transaction target is a node in a parallel chain corresponding to a target parent chain, that 1s, a parallel chain is also disposed between the public chain and the target parent chain, the blockchain network system performs the following program steps.
EP&C ref: P34726NL00 13 Our Ref.: OC183554NL-AWP0003
[0068] S41: A node, in the parallel chain, that serves as a transaction target stores blockchain data.
[0069] S42: The node, in the parallel chain, that serves as a transaction target initiates a transaction 1n the target parent chain according to the blockchain data and a transaction rule of the target parent chain, to form integral blockchain data conforming to the target parent chain.
[0070] According to a second aspect, as shown in FIG. 6, a blockchain network system provided in this application may further include a chain group composed of a plurality of third-party blockchain networks and a public chain distributed in the chain group, the third-party blockchain networks having respective dedicated interfaces. The blockchain network system further includes a parallel chain composed of some nodes 1n the public chain and/or the third-party blockchain network.
[0071] The parallel chain is disposed between the public chain and an accessing third-party blockchain network, or is disposed between any two third-party networks that connect with each other. To be specific, in actual applications, the parallel chain is not merely limited to synchronous data conversion and transferring between the public chain and the third-party blockchain network, but may also be applied to synchronous data conversion and transferring between any two third-party blockchain networks that connect with each other.
[0072] Same to an application manner between the public chain and a parent chain, a node in the parallel chain is configured to be able to execute all data operations of the nodes in the public chain, and has all functions and information of the nodes in the public chain. The node in the parallel chain is further configured to be able to execute all data operations of nodes in a connected third-party blockchain, and has all functions and information of the nodes in the connected third-party blockchain. The node in the parallel chain is configured with a public chain interface and an interface dedicated to the third-party blockchain network; and the parallel chain completes an interconnection operation between the public chain and the third-party blockchain or between two third-party blockchain networks in a bridging manner.
[0073] It should be noted that for the foregoing solutions, if two blockchain networks
EP&C ref: P34726NL00 " Our Ref : OC183554NL-AWP0003 bridged by the parallel chain are the public chain and the third-party blockchain, a synchronous data conversion manner and a node determining manner are same as the foregoing manner of running the parallel chain between the public chain and the parent chain. In this case, the node in the parallel chain is configured to be able to execute all data operations of the nodes in the public chain, and has all functions and information of the nodes 1n the public chain. Meanwhile, the node in the parallel chain is further configured to be able to execute all data operations of nodes in a connected third-party blockchain, and has all functions and information of the nodes in the connected third-party blockchain.
[0074] If two blockchain networks bridged by the parallel chain are two third-party blockchains, in one aspect, the node in the parallel chain is configured to be able to execute all data operations of nodes in one connected third-party blockchain, and has all functions and information of the nodes in the one connected third-party blockchain; and in another aspect, the node in the parallel chain is configured to be able to execute all data operations of nodes in the other connected third-party blockchain (a first blockchain), and has all functions and information of the nodes in the other connected third-party blockchain (second blockchain). A synchronous conversion direction of data is also from one blockchain network to another blockchain network.
[0075] For nodes in the parallel chain, if two blockchain networks bridged by the parallel chain are two third-party blockchain networks, the nodes on the parallel chain are voted in a first blockchain network from some nodes in the first blockchain; or the nodes on the parallel chain are composed of some nodes in the second blockchain that are recommended by a second blockchain network and are acknowledged by the first blockchain network; or some of the nodes on the parallel chain are voted from the nodes in the first blockchain, and the other nodes are composed of the nodes in the second blockchain that are recommended by the second blockchain and are acknowledged by the first blockchain. Further, after nodes in two third-party blockchains connect with each other, an interface node is preferentially selected, and/or a node adjacent to the interface node is used as a node in the parallel chain.
[0076] Further, if two blockchain networks bridged by the parallel chain are two third-party blockchain networks, the parallel chain may also be a multi-stage network structure composed of a plurality of nodes. In the multi-stage network structure composed of
EP&C ref: P34726NL00 1 Our Ref : OC183554NL-AWP0003 the nodes in the parallel chain, a node serving as a superior controls a bridging operation of a node serving as subordinate. Similarly, the parallel chain may also be a hybrid-chain network structure composed of a plurality of nodes, and the node in the parallel chain connects a plurality of third-party blockchain networks in a parallel manner.
[0077] In some embodiments of this application, the blockchain system further includes an industry chain and a federated chain that meet an interface specification of the public chain; the industry chain and the federated chain access the public chain through the nodes in the public chain; and the industry chain and the federated chain have independent distributed storage functions, transaction functions, and accounting functions. The blockchain system further includes a subchain that is created based on an interface specification of the public chain; all or some of nodes in the subchain come from the public chain, or the nodes in the subchain have an interface specification same as that of the nodes in the public chain; and the subchain has a distributed storage function, a transaction function, and an accounting function that are independent from the public chain.
[0078] In actual applications, the public chain network serves as a basic platform configured on a whole network, and a node interface thereof may be accessed by a plurality of blockchain networks, such as an industry chain, a federated chain, and a private chain that are established based on the interface specification of the public chain. Through the parallel chain, the node interface of the public chain network is further accessed by a third-party public chain, an industry chain, a federated chain, and a private chain that cannot directly transact with each other. If data transferring and cross-chain transactions cannot be performed between the networks, synchronous conversion of transaction data may be completed by disposing a parallel chain, thus finally performing the transaction.
[0079] It may be learned from the foregoing technical solutions that this application provides a blockchain network system, including a public chain, a parent chain, and a parallel chain. The public chain is a peer-to-peer network structure composed of a plurality of nodes, and may provide a unified interface specification for the external. The parent chain is a blockchain network accessing the public chain. The parallel chain is a peer-to-peer network composed of some nodes in the public chain or the parent chain. A node in the parallel chain is provided with an access interface of the parent chain, to interconnect the
EP&C ref: P34726NL00 10 Our Ref : OC183554NL-AWP0003 public chain and the parent chain in a bridging manner. Moreover, the parallel chain has complete functions of the parent chain, and may store all information on the parent chain. In this application, some nodes in the public chain or the parent chain are transformed into the parallel chain, so that the parent chain and the public chain, or two parent chains may interconnect with each other; and data and information between different blockchains can be transferred through the bridging of the parallel chain. In this way, a cross-chain transaction 1s completed. A large-scale transformation to the parent chain may be avoided by using the parallel chain, thus resolving a problem that an existing blockchain network cannot communicate and interact with other blockchain networks.
[0080] For similar parts between the embodiments provided in this application, reference may be made to each other. The specific implementations described above are merely some examples under a general concept of this application, and do not constitute any limitation to the protection scope of this application. For a person skilled in the art, any other implementations derived according to the solutions of this application without an effective effort all fall within the protection scope of this application.
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| NL2026378A NL2026378B1 (en) | 2020-08-31 | 2020-08-31 | Blockchain network system |
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| NL2026378A NL2026378B1 (en) | 2020-08-31 | 2020-08-31 | Blockchain network system |
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| NL2026378A NL2026378B1 (en) | 2020-08-31 | 2020-08-31 | Blockchain network system |
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