WO2020199703A1

WO2020199703A1 - Method, device and system for blockchain transaction

Info

Publication number: WO2020199703A1
Application number: PCT/CN2020/070525
Authority: WO
Inventors: 杜晓楠
Original assignee: 杜晓楠
Priority date: 2019-04-01
Filing date: 2020-01-06
Publication date: 2020-10-08

Abstract

A method, device and system for a blockchain transaction. The method comprises: configuring a lightning network on the basis of a stateless contract (S1); determining whether both parties of a transaction are on the same chain (S2); if so, using the lightning network to allocate a transaction block (S3); or if not, using another chain supporting the same encryption function to conduct the transaction via an atomic cross-chain swap (S4); and after completion of the transaction, the payee in the transaction confirming that the transaction is valid after elapse of a preset transaction block growth duration (S5). The method ensures transaction security while realizing high capacity and high speed blockchain transactions. The method further enables both parties of a transaction to perform reconciliation, and the entire reconciliation process is simple and highly efficient. Reconciliation can be performed in real time on a single piece of real-time transaction data, or batch reconciliation can be performed periodically on multiple pieces of transaction data within a certain period of time, such that reconciliation can be performed flexibly as required.

Description

Method, device and system for blockchain transaction

Technical field

The present invention relates to blockchain technology, and more specifically, to a method, device and system for blockchain transactions.

Background technique

Blockchain technology uses block-chain data structures to verify and store data, uses distributed node consensus algorithms to generate and update data, uses cryptography to ensure the security of data transmission and access, and uses intelligence composed of automated script codes. A new distributed infrastructure and calculation method in which contracts are used to program and manipulate data. However, the existing blockchain transaction methods are usually too complicated, low performance, high cost, and vulnerable to attacks. Therefore, there is a need for a blockchain that can maintain transaction security and prevent attacks while achieving high capacity and high speed. Methods and devices for transactions.

Furthermore, the current bank reconciliation system adopts the T+1 reconciliation mechanism (that is, the purchase operation processing data on T day requires T+1 day to perform reconciliation), with many transaction processes and long capital links. And its reconciliation is usually based on one party's bill, and all the bills of both parties within a certain period of time are checked. This reconciliation rule is very complicated, making the efficiency of fund clearing and settlement very low. Moreover, during the verification process, the security of the data is difficult to guarantee. Therefore, when there is a dispute or an account error, it is difficult to determine which account has a problem. Therefore, it needs to be verified from the source, which is inefficient and error-prone.

Summary of the invention

The technical problem to be solved by the present invention is to provide a block chain transaction method and device for the above-mentioned defects of the prior art, which can realize high-capacity and high-speed block chain transactions while maintaining transaction security.

The technical solution adopted by the present invention to solve its technical problems is: constructing a block chain transaction method, including: S1, constructing a lightning network based on a stateless contract; S2, judging whether the transaction parties are on the same chain, and if it is executed Step S3, otherwise use other chains that support the same encryption to perform cross-chain atomic swap transactions; S3, use the Lightning Network to allocate transaction blocks; S4, after the transaction ends, the recipient of the two parties waits for the transaction block After the growth set time, confirm the transaction is valid.

Another technical solution adopted by the present invention to solve its technical problem is to construct a block chain transaction device, the device includes: a memory; a processor, which is used to store instructions, when the instructions are executed The processor executes the blockchain transaction method.

The technical problem to be solved by the present invention is to provide a block chain transaction method and system in view of the complex reconciliation process, low efficiency, and low security of the prior art bank reconciliation system, which needs to be reconciled every other day. Safe, effective, simple and efficient reconciliation.

The technical solution adopted by the present invention to solve its technical problem is: constructing a blockchain transaction method, including: S1, the business device of the first transaction party receives first-party transaction data information, based on the first-party transaction data The information generates the first blockchain ID value according to the set rules, and sends the transaction data information of the first party to the business device of the second transaction party, and the business device of the second transaction party is based on the first party transaction The data information generates the second block chain ID value according to the same set rules; S2, writes the first block chain ID value to the first block chain node, and transmits it to the second block through the block chain P2P network S3, the business device of the second transaction party monitors the second blockchain node to obtain the first blockchain ID value; S4, compares the first blockchain ID value with the The second blockchain ID value for reconciliation.

Another technical solution adopted by the present invention to solve its technical problem is to construct a block chain transaction system, including the business device of the first transaction party, the business device of the second transaction party and each block chain node that communicate with each other The business device of the first transaction party is in communication connection with its corresponding business terminal, the business device of the second transaction party is in communication connection with its corresponding business terminal, the business device of the first transaction party, the The business device of the second transaction party and the blockchain node device respectively include a memory and a processor, the memory stores a computer program, and the processor implements a blockchain transaction when the computer program is executed. method.

The method and device for implementing blockchain transactions of the present invention can realize high-capacity and high-speed blockchain transactions while maintaining transaction security. Furthermore, due to the advantages of the block chain such as tamper resistance, high transparency, and decentralization, the authenticity and security of the transaction details are ensured, and since only the first block chain ID value generated by the first transaction party needs to be written After entering the blockchain once, the second transaction party obtains reconciliation by monitoring it, and after the completion of the blockchain transaction, the reconciliation of both parties to the transaction can be realized. The entire reconciliation process is simple and efficient. Further, a single piece of real-time transaction data can be reconciled in real time, or multiple transactions within a certain period of time can be periodically batch reconciled, so the reconciliation time is flexible.

Description of the drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments. In the accompanying drawings:

Figure 1 is a flowchart of the first embodiment of the blockchain transaction method of the present invention;

2 is a flowchart of the second embodiment of the blockchain transaction method of the present invention;

FIG. 3 is a schematic diagram of side chain and main chain anchoring of the lightning network according to the preferred embodiment of the present invention;

FIG. 4 is a schematic diagram of a transaction using a blockchain transaction method in a preferred embodiment of the present invention;

Figure 5 is a flowchart of the third embodiment of the blockchain transaction method of the present invention;

6 is a flowchart of the steps of real-time reconciliation of a single transaction data of the fourth embodiment of the blockchain transaction method of the present invention;

FIG. 7 is a method flowchart of a batch reconciliation step of multiple transaction data in the fourth embodiment of the blockchain transaction method of the present invention;

Fig. 8 is a functional block diagram of a block chain transaction system according to a preferred embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

Fig. 1 is a flowchart of the first embodiment of the blockchain transaction method of the present invention. As shown in Figure 1, in step S1, a lightning network is constructed based on a stateless contract. The Lightning Network is a decentralized network that can use the stateless contract function in the blockchain to realize instant payment for both parties in the transaction. In step S2, it is judged whether the two parties in the transaction are on the same chain. If yes, go to step S3, otherwise go to step S4. In step S3, for both parties in the same chain, the Lightning Network is used to conduct transactions. The Lightning Network can achieve high throughput and low latency transactions. In the Lightning Network, only routing nodes participate in transactions, and transactions are executed in parallel in the network. Therefore, as the nodes grow, there is no upper limit in theoretical throughput. Lightning network transactions are secured by payment channels, which can realize instant transactions without waiting for block confirmation. In step S4, for both parties in different chains, other chains supporting the same encryption are used to perform cross-chain atomic exchange transactions. In the present invention, cross-chain atom exchanges can immediately occur outside the chain through heterogeneous blockchain consensus rules. As long as the chain can support the same cryptographic hash function, transactions can be made across blockchains without having to trust a third-party custodian. In step S5, whether it is a transaction using the Lightning Network or a cross-chain atomic swap transaction, after the transaction ends, the payee of the two parties in the transaction waits for the transaction block to grow for a set time before confirming that the transaction is valid . The determination time can be calculated according to the probability of preventing the attack that is actually desired to be obtained. Generally, the higher the probability of preventing the attack is desired, the longer the waiting time is. When the waiting time exceeds the predetermined time, the attacker's chance of success is very low. Those skilled in the art can use Poisson distribution for calculation. Therefore, implementing the blockchain transaction method of the present invention can realize high-capacity and high-speed blockchain transactions while maintaining transaction security.

Fig. 2 is a flowchart of the second embodiment of the blockchain transaction method of the present invention. In the preferred embodiment shown in FIG. 2, in step S1, the side chain is connected to the Lightning Network by means of self-built side chain mortgage Token, and the registration is entered in the manner of two-way anchoring. Fig. 3 is a schematic diagram of side chain and main chain anchoring of the lightning network according to the preferred embodiment of the present invention. In this embodiment, the side chain adopts the mechanism of mortgage Token self-built side chain, through the two-way anchoring design, instant payment and high scalability, and adopts a hybrid design scheme: "drive chain + notary/side "Chain" approach to achieve two-way anchoring with Bitcoin. In step S2, the side chain adopts a custody mode or an alliance mode for transaction asset management. In this preferred embodiment, the Wasm smart contract is used to expand the application scenarios of Token to enhance the ecology and value of the Token, and it is possible to openly and transparently manage the side chain by displaying the number of mortgage tokens for each side chain and the management address and organization. The main chain runs DAPP, and the advantage of the side chain is that each independent DAPP resource is isolated and does not occur on Ethereum. Due to the hot traffic of a single DAPP and occupying the network, the gas cost of using other DAPPs increases. From a security perspective, the main The deployment of DAPP on the chain may cause the entire Ethereum network to roll back due to a security vulnerability in a single DAPP, such as The DAO.

In the present invention, the side chain adopts custody for transaction asset management including sending the assets of the side chain to the custodian of the main chain. After the custodian receives the assets, the corresponding digital assets are activated on the side chain. . In a preferred embodiment of the present invention, the asset is sent to the custodian of the main chain. After the custodian receives the relevant asset information, the side chain activates the corresponding digital asset. The custodial model tends to be centralized and requires the custodian to provide credit endorsement. In the present invention, the side chain adopts an alliance method for transaction asset management including the use of two-way anchoring technology to transfer the assets of the main chain to the side chain, and the side chain adopts the consensus algorithm of the custodian alliance to Assets are confirmed, and the consensus algorithm of the custody alliance includes one of PBFT, PoS, and PoA. Further, in the blockchain transaction method of the present invention, the side chain adopts an alliance method for transaction asset management further includes locking a deposit corresponding to the main chain to protect the side chain when the alliance of the side chain collapses. Chain assets. In the preferred embodiment of the present invention, the custodian alliance is used to replace the single custodian credit endorsement, and the two-way anchoring technology is used to transfer the main chain assets to the side chain. The side chain uses the consensus algorithm of the custodian alliance to confirm the digital assets. The consensus algorithm of the custodian is one of PBFT, POS, and POA. The security of the side chain relies on the credit of the alliance. It is worth noting that although the side chain custody or the credit endorsement of the alliance since the side chain, there will be a corresponding in the main chain The locking margin mechanism ensures that if the side chain credit alliance collapses, the user assets of the side chain can still be guaranteed. This is different from the traditional side chain model and is the innovation of the side chain of the present invention. In a preferred embodiment of the present invention, the amount of mortgage NBT for each side chain can be displayed in the side chain browser, and all users can refer to it at any time.

In step S3, it is judged whether both parties to the transaction are on the same chain. If yes, go to step S5, otherwise go to step S4. In step S4, for both parties in different chains, other chains supporting the same encryption are used to perform cross-chain atomic exchange transactions. In the present invention, cross-chain atom exchanges can immediately occur outside the chain through heterogeneous blockchain consensus rules. As long as the chain can support the same cryptographic hash function, transactions can be made across blockchains without having to trust a third-party custodian. In step S5, both parties of the transaction create a ledger entry on the blockchain, in which the set amount is pre-stored in the micro-payment channel in the lightning network and the signatures of both parties of the transaction are output. In this embodiment, a ledger entry is created on the blockchain of both parties to the transaction, and the two participants are required to sign any capital expenditures. The transactions created by both parties return the ledger entries to their respective distributions, but will not broadcast them to the blockchain. In step S6, both parties to the transaction create multiple transaction output inputs in the ledger entry to update the ledger entry and output signatures of both parties to the transaction. When a transaction is generated, both parties to the transaction can create multiple transaction outputs and inputs from the current ledger entry to update the distribution of each transaction party in the ledger entry. In step S7, one of the parties to the transaction who needs to withdraw cash writes the latest version of the ledger entry into the blockchain, and distributes it according to the distribution plan in the latest version of the ledger entry. In order to ensure the speed and safety of the transaction, in the present invention, only the latest version of the ledger entry is valid, which is enforced by the smart contract script parsed by the blockchain. Any party can close this entry at any time by broadcasting the latest version to the blockchain without any trust or supervision. Since the Lightning Network is used to create ledger entries, a path similar to routing data packets on the Internet can be found on the network. The nodes on the path are not trusted because a script is used to enforce payment, which enforces atomicity (the entire payment succeeds or fails) by decrementing the time lock. The blockchain acts as an arbiter. Therefore, non-blockchain transactions can be performed without restrictions. Transactions can be traded with confidence in the enforceability of the blockchain.

In a preferred embodiment of the present invention, in order to ensure the security of the transaction, one of the parties to the transaction who needs to withdraw cash writes the latest version of the ledger entry into the blockchain, and executes it according to the distribution plan in the latest version of the ledger entry. The allocation step further includes the following steps. One of the two parties in the transaction who needs to withdraw cash will write the latest version of the ledger entry signed by both parties in the transaction into the blockchain. Determine whether there is another party claiming that the ledger entry is not the latest version within a certain period of time. If there is indeed another party claiming that the ledger entry is not the latest version, then the allocation in the latest version of the ledger entry provided by the party that needs to withdraw All assets in the plan will be confiscated to the other party who raises the challenge. If not, distribute according to the distribution plan in the latest version of the ledger entry provided by the party who needs to withdraw. In order to ensure transaction security, one of the two parties who needs to withdraw will get the allocated transaction block, and the other party will first get the allocated transaction block.

The following describes the principle of using the Lightning Network to conduct transactions for both parties in the same chain in steps S5-S7. Both parties to the transaction pre-deposit a part of the funds into the "micro-payment channel". Initially, the distribution plan of both parties is equal to the pre-deposited amount. Every time a transaction occurs, it is necessary to jointly confirm the result of the fund distribution after the transaction, and at the same time sign to invalidate the old version of the distribution plan. When any party needs to withdraw cash, it can write the transaction results signed by both parties in his hand to the blockchain network to be confirmed. From this process, we can see that only when withdrawing money does it need to go through the blockchain. Any version of the scheme needs to be signed by both parties to be legal. Any party can withdraw cash at any time. When withdrawing, it is necessary to provide a fund distribution plan signed by both parties (meaning it must be the result of a certain transaction, which has been confirmed by both parties, but may not be the latest result). Within a certain period of time, if the other party presents a certificate showing that this plan was actually invalidated before (not the latest transaction result), the funds will be fined and confiscated to the challenger; otherwise, the funds will be distributed according to the result of the proposing party. The confiscation mechanism ensures that no one will deliberately take an old transaction result to withdraw. In addition, even if both parties confirm a certain withdrawal, it is first proposed that the funds of the withdrawal party should arrive later than the other party, which encourages transactions outside the chain.

In step S8, the receiving party among the transaction parties receives the transaction block through the blockchain to determine whether the transaction block continues to grow after a set number of blocks; if so, execute step S9 to determine that the transaction is valid, otherwise Continue to wait until it is determined whether the set number of blocks have been grown after the transaction block is determined. The probability of successful attack decreases exponentially with the normal presentation of the specific number of the set number of blocks. After the probability of successful attack is determined, the specific number of the set number of blocks can be calculated.

In a preferred embodiment of the present invention, this step is described in detail as follows. Those skilled in the art know. Under the constraints of the Merkel tree structure, the attacker of the blockchain cannot create value out of thin air or plunder the digital currency of other accounts. The only thing you can do is to change your transaction information, which is equivalent to taking back the money you paid to others. For example, an attacker can post a transaction to the payee. After seeing the transaction, the payee sends the goods to the attacker or performs other agreements or triggers other transactions. When the attacker confirms the delivery of the goods or other agreements After it has been fulfilled or other transactions have been triggered, the attacker creates a fork on the main chain and pays the money to another address on the fork block. If the attack fork chain can exceed the length of the current main chain , The miner will think that this fork is the main chain, and the transaction information just included to the payee is considered invalid, so as to achieve the result of getting the money back after payment. The race between the honest chain and the attacker chain can be described by Binomial Random Walk. A success event is defined as the honest chain being extended by one block, making its lead +1, while a failure event is the attacker's chain being extended by one block, making the gap -1. a = the probability that the honest chain increases by one block b = the probability that the attacker chain increases by one block Cz = the probability that the attacker catches up with z block gaps

a = the probability of adding a block to the honest chain

b = the probability that the attacker's chain increases by one block Cz = the probability that the attacker catches up with z block gaps

The computing power of the entire network is greater than the computing power of the attacker, so a>b, then the probability of successful attack decreases exponentially due to the increase in the number of blocks, and the attacker's chance of success becomes smaller and smaller as time goes by.

Assuming that behind the own transaction information block, the main chain is longer and generates m blocks, it is safe for the payee to confirm receipt of the information and send out the goods, that is, the transfer information is difficult to tamper with. How many blocks to wait, then we consider how long a payee needs to wait to be confident enough that the payer has difficulty changing the transaction. Assuming a relatively honest chain, the potential progress of the attack chain is a Poisson distribution, and the expected value of the distribution is:

In this case, in order to calculate the probability of the attacker catching up, we multiply the probability density of the Poisson distribution of the number of blocks made by the attacker by the probability that the attacker can still catch up with this number.

Converted to the following form, avoiding the sum of infinite series:

Calculating it, we can get the following probability results, and find that the probability F decreases exponentially with respect to m. Through the above formula, after the probability of successful attack is determined according to the requirements, the specific number of the set number of blocks can be calculated. Usually it can be set to be infinitely close to 0 or set based on actual conditions.

Fig. 4 is an exemplary illustration of a transaction using a lightning network according to a preferred embodiment of the present invention. As shown in Figure 4, in step 1, both Alice and Bob each took out 0.5 BTC to construct Funding Tx, and the output was the 2/2 multi-signature of Alice and Bob. At this time, Funding Tx is not signed, let alone broadcast. 2. Alice constructs Commitment Tx: C1a and RD1a, and hands them to Bob for signature. The first output of C1a is a multi-signature address, Alice's other private key Alice 2 and Bob's 2/2 multi-signature, and the second output is Bob 0.5BTC. 3. RD1a is the first spending transaction output by C1a, which is output to Alice 0.5BTC, but this type of transaction has a sequence, which prevents the current transaction from entering the block, and can enter the block only when the forward transaction has sequence confirmations. 4. Bob constructs Commitment Tx: C1b and RD1b, and hands them to Alice for signature. The structure is symmetrical with C1a and RD1a. 5. Bob signs C1a and RD1a, and gives the signature to Alice; in the same way, Alice signs C1b and RD1b, and gives it to Bob after completion. At this time, since Funding Tx has not been signed, neither party can do evil, nor will any party lose any money. 6. After both parties have completed signing and exchanging commitment Tx, they will sign Funding Tx and exchange. At this time, Funding Tx is a complete transaction, which is broadcast.

Since the two transactions C1a and C1b spend the same output, only one of the two transactions can enter the block. If Alice broadcasts C1a, Bob immediately gets 0.5BTC (the second output of C1a), and Alice needs to wait for C1a to get 1,000 confirmations before getting 0.5BTC through the output of RD1a. On the other hand, if Bob broadcasts C1b, Alice immediately gets 0.5 BTC. Bob waits for C1b to get 1,000 confirmations before he can get 0.5 BTC through RD1b. In other words, the party that unilaterally broadcasts the transaction to terminate the contract will delay getting the coins, while the other party will get the coins immediately.

Implementing the blockchain transaction method of the present invention can realize lightning-fast blockchain payment without worrying about blocking the confirmation time. This is because the blockchain stateless contract enforces security without creating blockchain transactions for personal payments. The payment speed is measured in milliseconds. And has a very high scalability, which can process millions to billions of transactions per second on the network. Capacity has blown away the traditional payment track by many orders of magnitude. Pay per action/click can now be attached without a custodian. And it can achieve extremely low fees through transactions and settlement of blockchain off-chains, so that emerging use cases such as instant micropayments can be realized.

Fig. 5 is a flowchart of the third embodiment of the blockchain transaction method of the present invention. As shown in Figure 5, in step S1, the business device of the first transaction party receives the first party transaction data information, generates the first blockchain ID value based on the first party transaction data information according to the set rules, and The transaction data information of the first party is sent to the business device of the second transaction party, and the business device of the second transaction party generates a second blockchain ID value based on the transaction data information of the first party according to the same set rules. In a preferred embodiment of the present invention, the business device of the first transaction party receives the data information of the first transaction party from the internal information network of the first transaction party; the business device of the first transaction party is based on the The transaction data information of the first party generates the first blockchain ID value according to the set rules and stores the first blockchain ID value in the business device of the first transaction party; the business device of the first transaction party will The transaction data information of the first party is sent to the business device of the second transaction party in a message; the business device of the second transaction party generates a second transaction based on the transaction data information of the first party according to the same set rules. Blockchain ID value. In a preferred embodiment of the present invention, the first transaction party data information is a single piece of real-time transaction data and includes: transaction time, transaction amount, transaction transfer party and transaction transfer party. In the present invention, it should be noted that the first transaction party and the second transaction party are only for distinguishing the two parties to the transaction, and any transaction party can be the first transaction party or the second transaction party. In a preferred embodiment of the present invention, the first-party transaction data information includes multiple transaction data within a set time period, and each transaction data includes transaction time, transaction amount, transaction transfer-out party and transaction transfer-in party. Correspondingly, the first block chain ID value and the second block chain ID value may also include multiple sets of block chain ID values.

Let's use an example to illustrate. For example, an individual uses ICBC’s A (622230************) card on ICBC’s terminal member machine to ABC’s B card (62284************) A transfer operation was performed, the transfer amount was 100 yuan, and the transfer time was 2019-9-23, 20:23. At this time, ICBC is the first business party and the Agricultural Bank is the second business party. The ICBC business device will receive this transfer operation information through the internal network, that is, the first transaction party data information, which includes the transaction time, transaction amount, transaction transferer account number, and transaction transferee account number. Subsequently, the first transaction party data information can be generated according to the set rules to generate the first blockchain ID value. Those skilled in the art can use any method known in the art to generate such a first blockchain ID value. For example, the data of the transaction party can be extracted according to a specific rule to a binary value of any length, and then mapped into a binary value of a fixed length, for example, using the MD5 algorithm. Any known extraction algorithm and mapping method in the art can be used in the present invention. For each transaction time, transaction amount, transaction transferor account number, and transaction transferee account of each transaction party’s data information can be extracted in accordance with the above methods to generate the first time associated value, the first amount associated value, The first transfer-out party related value and the first transfer-in party related value, the second time related value, the second amount related value, the second transfer-out party related value, and the second transfer-in party related value. After the ICBC business device generates the first blockchain ID value, it is stored in the internal memory. In this embodiment, the first blockchain ID value includes a first time related value, a first amount related value, a first transfer-out party related value, and a first transfer-in party related value. At the same time, as the second business party, the Agricultural Bank of China can also receive the data information of the first transaction party through the public network. At this time, the business device of the Agricultural Bank of China will use the same algorithm and the same rule to generate the second blockchain ID value based on the data information of the first transaction party. In this embodiment, the second blockchain ID value includes a second time related value, a second amount related value, a second transfer-out party related value, and a second transfer-in party related value. Since the algorithms and rules are the same, if there is no problem in the accounts, the first blockchain ID value and the second blockchain ID value should be the same, or conform to the set rules. Specifically, those skilled in the art can make settings according to actual needs.

In step S2, the first blockchain ID value is written into the first blockchain node, and transmitted to the second blockchain node through the blockchain P2P network. In a preferred embodiment of the present invention, first, the business device of the first transaction party can initiate a chain entry request, block link income chain request, and complete consensus on the block chain. Then write the first blockchain ID value to the first blockchain node and broadcast it on the blockchain P2P network. Blockchain is a peer-to-peer network with a decentralized open ledger; for example, the structure of Bitcoin and the structure of Ethereum rely on a distributed shared network to exist among users. Each user has his own public ledger that records every transaction, and based on the application of the network structure, it can be assured that it is correct when checking transaction records with other users. If you want to rewrite the blockchain, you need to carry out a tracking bifurcation attack on the network, and even if you use a read-write access method for each peer-to-peer network, you cannot extract enough data to change what is already on the blockchain. Transaction records. Therefore, after the first blockchain ID is written into the blockchain, it is difficult to change it. The remaining blockchain nodes on the blockchain will respectively receive the first blockchain ID value. In this way, the second blockchain node will receive the first blockchain ID value. Here, those skilled in the art know that the second blockchain node may be any node on the blockchain, and the difference is that it is always monitored by the business device of the second transaction party.

In step S3, the business device of the second transaction party monitors the second blockchain node to obtain the first blockchain ID value. In a preferred embodiment of the present invention, the business device of the second transaction party can communicate with the second blockchain node in any manner, thereby safely obtaining the first blockchain ID value.

In step S4, the first blockchain ID value and the second blockchain ID value can be compared for reconciliation. In the preferred embodiment of the present invention, different comparisons can be made according to different rules. For example, in the case where the data information of the first transaction party is a single piece of real-time transaction data, the time-related value, the amount-related value, and the value of the first block chain ID value and the second block chain ID value can be compared in sequence. The transfer-out party's associated value and transfer-in party's associated value, and an error will be reported when any set of values fails. In a further preferred embodiment of the present invention, in the case where the first transaction party data information includes multiple pieces of real-time transaction data, the total value of time correlation, the total value of money, the total value of the transferor's correlation, and the transfer As long as the total value of the incoming party's association is the same or meets the set rules, the reconciliation is deemed successful. When there is an error in the total value, each value is returned to query.

The method of implementing the blockchain transaction of the present invention ensures the authenticity and security of transaction details due to the advantages of the blockchain such as tamper-proof, high transparency and decentralization, and because only the business of the first transaction party is required The first blockchain ID value generated by the device is written into the blockchain once, and the business device of the second transaction party obtains and reconciles it by monitoring, so the whole process is simple and efficient. Further, a single piece of real-time transaction data can be reconciled in real time, or multiple transactions within a certain period of time can be periodically batch reconciled, so the reconciliation time is flexible.

Fig. 6 is a flowchart of the steps of real-time reconciliation of a single transaction data in the fourth embodiment of the blockchain transaction method of the present invention. In this embodiment, the first transaction party data information is a single piece of real-time transaction data and includes: transaction time, transaction amount, transaction transfer-out party and transaction transfer-in party. The first blockchain ID value includes a first time associated value, a first amount associated value, a first transfer-out party associated value, and a first transfer-in party associated value. The second blockchain ID value includes a second time related value, a second amount related value, a second transfer-out party related value, and a second transfer-in party related value. In this embodiment, the generation and acquisition of the first blockchain ID value and the second blockchain ID value can refer to the embodiment shown in FIG. 1, which will not be repeated here. Therefore, during the reconciliation, in step S1, the first time correlation value and the second time correlation value are compared, and if they are the same, step S2 is executed, otherwise, step S6 is executed. In step S2, the first amount associated value and the second amount associated value are compared, and if they are the same, step S3 is executed, otherwise, step S6 is executed. In step S3, the correlation value of the first transfer-out party is compared with the correlation value of the second transfer-out party, if they are the same, step S4 is executed, otherwise, step S6 is executed. In step S4, the first transfer-in party associated value and the second transfer-in party associated value are compared, if they are the same, step S5 is executed, otherwise, step S6 is executed. In step S5, the business device of the first transaction party and the business device of the second transaction party respectively display that the reconciliation is successful. In the step S6, the business device of the first transaction party and the business device of the second transaction party respectively display the transaction data information of the first party and report an error.

For a single piece of real-time transaction data, when the first time associated value, the first amount associated value, the first transferer's associated value, the first transferer's associated value and the second time associated value, the second amount of associated value, the second transfer When the associated value of the outgoing party and the associated value of the second transfer-in party are the same, the reconciliation is determined to be correct. Therefore, you can check whether these values are the same according to the actual situation, and determine whether the reconciliation is correct. Although, in this embodiment, the judgment is made according to the sequence of the time-related value, the amount-related value, the transfer-out party's related value, and the transfer-in party's related value. In other preferred embodiments of the present invention, other options may be selected. The sequence here falls within the protection scope of the present invention. With this embodiment, a single piece of real-time transaction data can be reconciled in real time, which shortens the time of funds in transit and the period of fund settlement, and improves the security of funds during the transaction.

FIG. 7 is a method flowchart of a batch reconciliation step of multiple transaction data in the fourth embodiment of the blockchain transaction method of the present invention. In this embodiment, the first-party transaction data information includes multiple transaction data within a set time period, and each transaction data includes transaction time, transaction amount, transaction transfer-out party and transaction transfer-in party; A blockchain ID value includes the first time correlation total value generated based on all transaction times, the first amount correlation total value generated based on all transaction amounts, the first transferer correlation total value generated based on all transaction transferors, and Based on the total associated value of the first transferee generated by all the transferees of the transaction, the first blockchain ID value further includes multiple first time associated values and multiple first amount associated values generated based on each transaction data , Multiple first transfer-out party associated values and multiple first transfer-in party associated values; the second block chain ID value includes a second time associated total value generated based on all transaction time, and generated based on all transaction amount The second total amount of associated total value, the total associated value of the second transferer generated based on all transaction transferors, and the total associated value of the second transferee generated based on all transaction transferers, the second blockchain ID value It further includes multiple second time associated values, multiple second amount associated values, multiple second transfer-out party associated values, and multiple second transfer-in party associated values generated based on each transaction data. In this embodiment, the generation and acquisition of the first blockchain ID value and the second blockchain ID value can refer to the embodiment shown in FIG. 1, which will not be repeated here. In step S1, the first time correlation total value and the second time correlation total value are compared, if they are the same, step S2 is performed, otherwise step S6 is performed to traverse and compare the first time correlation value and the second time of each transaction data Correlation value and output transaction data with different first time correlation value and second time correlation value and report an error. In step S2, the first amount of associated total value and the second amount of associated total value are compared, if they are the same, step S3 is executed, otherwise step S7 is executed to traverse and compare the first amount associated value of each transaction data with the second amount associated value. Amount-related value and output transaction data with different first amount-related value and second amount-related value and report an error. In step S3, compare the total associated value of the first transfer-out party with the total associated value of the second transfer-out party, if they are the same, proceed to step S4, otherwise proceed to step S7 to traverse and compare the first transfer-out of each transaction data The related value of the party and the related value of the second transferer are output, and the transaction data in which the related value of the first transferor and the related value of the second transferor are different are output and an error is reported. In step S4, compare the total associated value of the first transfer-in party and the total associated value of the second transfer-in party, if they are the same, proceed to step S5, otherwise proceed to step S7 to traverse and compare the first transfer-in of each transaction data The related value of the party and the related value of the second transfer-in party, and output the transaction data with different related values of the first transfer-in party and the related value of the second transfer-in party and report an error. In step S5, the business device of the first transaction party and the business device of the second transaction party respectively display that the reconciliation is successful.

In this embodiment, in the case of batch processing, the total value of the time correlation, the total value of the amount, the total value of the transferor's correlation, and the total value of the transferee's correlation can be calculated separately to compare the total value first. At the same time, you can directly determine that the reconciliation is successful, which simplifies the reconciliation process and realizes the simplification of batch reconciliation. When the total value is not equal, the corresponding value of each transaction data is compared to find out the transaction data in question.

FIG. 8 is a schematic block diagram of a blockchain transaction system according to a preferred embodiment of the present invention. The system includes a business device 100 of a first transaction party, a business device 200 of a second transaction party, and first and second areas that communicate with each other Block chain node devices 310, 320. The business device 100 of the first transaction party is communicatively connected with each corresponding business terminal 101. The service device of the second transaction party and its corresponding service terminal 201 are in communication connection. The business device 100 of the first transaction party communicates with the first block chain node device 310, and the business device 200 of the second transaction party monitors the second block chain node device 320, the first and second blocks The chain node devices 310 and 320 are set in the blockchain P2P network 300. The business device 100 of the first transaction party, the business device 200 of the second transaction party, and the blockchain node devices 310 and 320 respectively include a memory and a processor. The memory stores a computer program, and the The processor implements the aforementioned blockchain transaction method when executing the computer program.

Therefore, the present invention can be implemented by hardware, software or a combination of software and hardware. The present invention can be implemented in a centralized manner in at least one computer system, or implemented in a decentralized manner by different parts distributed in several interconnected computer systems. Any computer system or other equipment that can implement the method of the present invention is applicable. The combination of commonly used software and hardware can be a general computer system with a computer program installed, and the computer system is controlled by installing and executing the program to make it run according to the method of the present invention.

The present invention can also be implemented by a computer program product. The program contains all the features capable of implementing the method of the present invention. When it is installed in a computer system, the method of the present invention can be implemented. The computer program in this document refers to any expression of a set of instructions that can be written in any programming language, code, or symbol. The instruction set enables the system to have information processing capabilities to directly implement specific functions, or to perform After one or two steps, a specific function is realized: a) conversion into other languages, codes or symbols; b) reproduction in a different format.

Although the present invention is described through specific embodiments, those skilled in the art should understand that various changes and equivalent substitutions can be made to the present invention without departing from the scope of the present invention. In addition, various modifications can be made to the present invention for specific situations or materials without departing from the scope of the present invention. Therefore, the present invention is not limited to the disclosed specific embodiments, but should include all embodiments falling within the scope of the claims of the present invention.

The above descriptions are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement and improvement made within the spirit and principle of the present invention shall be included in the protection of the present invention. Within range.

Claims

A blockchain transaction method, characterized in that it includes

S1. Construct a lightning network based on stateless contracts;

S2. Judge whether the two parties to the transaction are on the same chain, if it is to perform step S3, otherwise use other chains that support the same encryption to perform cross-chain atomic exchange transactions;

S3. Use the Lightning Network to distribute transaction blocks;

S4. After the transaction ends, the payee of the two parties in the transaction waits for the growth of the transaction block for a set time before confirming that the transaction is valid.
The method of blockchain transaction according to claim 1, wherein the step S4 further comprises:

S41. The receiver of the two parties to the transaction receives the transaction block through the blockchain, and determines whether the transaction block continues to grow after a set number of blocks; if it is, the transaction is determined to be valid, otherwise it continues to wait.
The blockchain transaction method according to claim 2, characterized in that, in the step S41, the set number is calculated based on the following formula:

among them
a = the probability of adding one block to the honest chain b = the probability of adding one block to the attacker's chain Cz = the probability of the attacker catching up with z block gaps; m represents the set number, and F represents the receiving party to receive To the probability of risk supply.
The block chain transaction method according to any one of claims 1-3, wherein the step S3 further comprises:

S31. Both parties to the transaction create a ledger entry on the blockchain, in which the set amount is pre-stored in the micro-payment channel in the lightning network and the signatures of both parties to the transaction are output;

S32. Both parties to the transaction create multiple transaction output inputs in the ledger entry to update the ledger entry and output signatures of both parties to the transaction;

S33. One of the parties to the transaction who needs to withdraw cash writes the latest version of the ledger entry into the blockchain, and distributes the transaction block according to the allocation plan in the latest version of the ledger entry.
The blockchain transaction method according to claim 4, wherein the step S33 further comprises:

S331. One of the two parties in the transaction who needs to withdraw cash writes the latest version of the ledger entry signed by both parties in the transaction into the blockchain;

S332. Determine whether another party proposes that the ledger entry is not the latest version within a certain period of time. If step S333 is performed, otherwise the transaction block is executed according to the allocation plan in the latest version of the ledger entry provided by the party that needs to withdraw distribution;

S333. All transaction blocks in the distribution plan in the latest version of the ledger entry provided by the party that needs to withdraw are fined and confiscated to the other party that raises the challenge.
The block chain transaction method according to claim 5, characterized in that, in the step S332, one of the two parties in the transaction that needs to withdraw then obtains the allocated transaction block, and the other party first obtains the allocated transaction block.
The blockchain transaction method according to any one of claims 1-3, wherein the step S1 further comprises:

S11. Connect the side link to the Lightning Network through the side chain mortgage Token self-built method, and use the two-way anchoring method to enter the registration;

S12. The side chain adopts custody mode or alliance mode for transaction asset management.
The method of block chain transactions according to claim 7, wherein the side chain adopts custody for transaction asset management including sending the assets of the side chain to the custodian of the main chain, and the custodian receives After the asset, the corresponding digital asset is activated on the side chain; the side chain adopts an alliance to conduct transaction asset management including the use of two-way anchoring technology to transfer the assets of the main chain to the side chain; the side chain adopts The consensus algorithm of the custodian alliance confirms the assets, and locks the deposit corresponding to the main chain to protect the assets of the side chain when the alliance of the side chain collapses.
A block chain transaction device, the device comprising: a memory; a processor, which is used to store instructions, when the instructions are executed, the processor executes any one of claims 1-9 Blockchain transaction method.
A blockchain transaction method, characterized in that it includes:

S1. The service device of the first transaction party receives the transaction data information of the first party, generates the first blockchain ID value according to the set rules based on the transaction data information of the first party, and sends the transaction data information of the first party For the business device of the second transaction party, the business device of the second transaction party generates a second blockchain ID value based on the transaction data information of the first party according to the same set rules;

S2. Write the first blockchain ID value to the first blockchain node, and transmit it to the second blockchain node through the blockchain P2P network;

S3. The business device of the second transaction party monitors the second blockchain node to obtain the first blockchain ID value;

S4. Compare the first block chain ID value and the second block chain ID value for reconciliation.
The blockchain transaction method according to claim 11, wherein the step S1 further comprises:

S11. The business device of the first transaction party receives the data information of the first transaction party from the internal information network of the first transaction party;

S12. The business device of the first transaction party generates a first blockchain ID value according to a set rule based on the transaction data information of the first party and stores the first blockchain ID value in the first transaction party's Business device

S13. The business device of the first transaction party sends the transaction data information of the first party to the business device of the second transaction party in a message;

S14. The business device of the second transaction party generates a second blockchain ID value based on the transaction data information of the first party according to the same set rules.
The blockchain transaction method according to claim 12, wherein the step S2 further comprises:

S21. Block link income chain request, and complete consensus on the block chain;

S22. Write the first blockchain ID value to the first blockchain node and broadcast it on the blockchain P2P network;

S23. The second blockchain node receives the first blockchain ID value.
The block chain transaction method according to claim 13, wherein the first transaction party data information is a single piece of real-time transaction data and includes: transaction time, transaction amount, transaction transfer-out party and transaction transfer-in party; The first blockchain ID value includes a first time associated value, a first amount associated value, a first transfer-out party associated value, and a first transfer-in party associated value; the second blockchain ID value includes a second Time related value, second amount related value, second transfer-out party related value, and second transfer-in party related value.
The block chain transaction method according to claim 14, wherein the step S4 further comprises

S41. Compare the first time correlation value and the second time correlation value, if they are the same, perform step S42, otherwise, perform step S46;

S42. Compare the associated value of the first amount of money with the associated value of the second amount of money, if they are the same, execute step S43, otherwise execute step S46;

S43. Compare the associated value of the first transfer-out party with the associated value of the second transfer-out party, if they are the same, execute step S44, otherwise, execute step S46;

S44. Compare the associated value of the first transfer-in party with the associated value of the second transfer-in party, if they are the same, perform step S45, otherwise, perform step S46;

S45: The business device of the first transaction party and the business device of the second transaction party respectively display that the reconciliation is successful;

S46. The business device of the first transaction party and the business device of the second transaction party respectively display the transaction data information of the first party and report an error.
The block chain transaction method of claim 13, wherein the first-party transaction data information includes multiple transaction data within a set time period, and each transaction data includes transaction time, transaction amount, transaction The transfer-out party and the transaction transfer-in party; the first blockchain ID value includes the first time-related total value generated based on all transaction times, the first amount-related total value generated based on all transaction amounts, and the transfer-out based on all transactions The total associated value of the first transfer-out party generated by the party and the total associated value of the first transfer-in party generated based on all the transfer-in parties of the transaction. The first blockchain ID value further includes a plurality of first transfer-in parties generated based on each transaction data A time-related value, multiple first amount-related values, multiple first transfer-out party related values, and multiple first transfer-in party related values; the second blockchain ID value includes the first value generated based on the entire transaction time The total value of the second time association, the total value of the second amount of association generated based on the total transaction amount, the total value of the second transfer-out party generated based on all the transaction transferers, and the second transfer-in party relationship generated based on all the transaction transferees The total value of the second blockchain ID value further includes a plurality of second time-related values, a plurality of second amount-related values, a plurality of second transferor-related values, and a plurality of second time-related values generated based on each transaction data. 2. The associated value of the transfer-in party.
The block chain transaction method according to claim 16, wherein the step S4 further comprises:

S41. Compare the first time correlation total value and the second time correlation total value, and if they are the same, perform step S42, otherwise, traverse and compare the first time correlation value and the second time correlation value of each transaction data and output all State the transaction data with different correlation values between the first time and the second time and report an error;

S42. Compare the associated total value of the first amount and the associated total value of the second amount, if they are the same, perform step S43, otherwise traverse and compare the first amount associated value and the second amount associated value of each transaction data and output all State the transaction data with different correlation values between the first amount and the second amount and report an error;

S43. Compare the total associated value of the first transferer with the total associated value of the second transferor, if they are the same, perform step S44, otherwise, compare the first transferor's associated value of each transaction data with the second The transferor's associated value and output the transaction data with the first transferor's associated value and the second transferor's associated value that are different and report an error;

S44. Compare the total associated value of the first transfer-in party with the total associated value of the second transfer-in party, and if they are the same, perform step S45; otherwise, compare the first transfer-in party's associated value of each transaction data with the second The transfer-in party's associated value and output the transaction data with different related values of the first transfer-in party and the second transfer-in party and report an error;

S45. The business device of the first transaction party and the business device of the second transaction party respectively display that the reconciliation is successful.
A block chain transaction system, which is characterized in that it comprises a business device of a first transaction party, a business device of a second transaction party and each block chain node device that communicate with each other, and the business device of the first transaction party communicates with each other. Each corresponding business terminal is in communication connection, the business device of the second transaction party is in communication connection with each corresponding business terminal, the business device of the first transaction party, the business device of the second transaction party, and the block The chain node devices respectively include a memory and a processor, the memory stores a computer program, and the processor implements the method for blockchain transactions according to any one of claims 11-17 when executing the computer program.