CN108960826B - Transaction group, transaction group construction method, storage medium, device and system - Google Patents
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- CN108960826B CN108960826B CN201810695527.9A CN201810695527A CN108960826B CN 108960826 B CN108960826 B CN 108960826B CN 201810695527 A CN201810695527 A CN 201810695527A CN 108960826 B CN108960826 B CN 108960826B
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q20/00—Payment architectures, schemes or protocols
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- G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
- G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
Abstract
The invention discloses a transaction group, a transaction group construction method, a storage medium, equipment and a system, and belongs to the technical field of block chains. The method comprises the steps of calculating the Hash value of the transaction from the tail transaction to the head transaction of the transaction group, and firstly calculating the Hash value of the tail transaction; calculating the Hash value of the transaction adjacent to the tail transaction, and calculating the Hash value of each transaction in sequence according to the sequence until the Hash value of the head transaction is calculated; respectively putting the Hash value of the head transaction into each transaction in the transaction group; calculating SIGHASH of each transaction and calculating a signature; an apparatus and system. Aiming at the problem that the atomicity of the transaction cannot be achieved by a group of transactions sent to a block chain in the prior art, the method can ensure that the group of transactions sent to the block chain are either successful in transfer or failed in transfer.
Description
Technical Field
The present invention relates to the field of blockchain technologies, and in particular, to a transaction group, a transaction group construction method, a storage medium, a device, and a system.
Background
In the prior art, transaction information on a block chain includes three parts, as shown in fig. 1, TxHash is a Hash value of transaction content; tx content refers to transaction content; the Tx signature refers to the signature of the transaction. The atomicity of a single transaction can be ensured, when 2 or more transactions are involved, if a plurality of transactions are sent at the same time and the transaction sequence is kept not to be disturbed, or the plurality of transactions are successful or failed at the same time, the atomicity of exchange of transaction groups cannot be realized, and unfair transactions are caused; in order to achieve the ordering of the transactions, a single transaction is generally required to confirm one transaction before sending the next transaction, and in addition, under the condition of block rollback, the transaction order cannot be guaranteed not to be reversed. When the method is applied to the transaction group with interdependence among transactions, more time is needed for spreading each transaction in the transaction group, the transaction processing capacity is low, and the spreading speed of the block is reduced.
In the blockchain system, most systems only guarantee atomicity of a single transaction, that is, transaction a is executed successfully or unsuccessfully in the blockchain, and it cannot be said that half of transaction is executed. But atomicity cannot be achieved between independent transactions in the blockchain.
In the existing scheme, multiple transactions cannot guarantee atomicity and orderliness of the transactions. For example, a0 types a1 into ten tokens 1, a1 goes to a2 where the ten tokens 1 buy one token2, which is actually a two-stroke transaction; when the two transactions are executed, the transaction A0- > A1 must be ensured to be confirmed in the block chain, then the transaction A1- > A2 can be sent, and the two transactions cannot be sent simultaneously by the existing scheme. For example, a1 and a2 exchange token1 and token2, a1- > a2 and ten tokens 1, a2- > a1 and one token2 with each other, and the two transactions must be atomicity guaranteed, otherwise, unfair transactions occur. That is, a set of transactions sent to the blockchain, either all transfers were successful or all transfers failed; in the existing scheme, the atomicity of interchange cannot be achieved.
Disclosure of Invention
1. Technical problem to be solved by the invention
In order to overcome the above technical problems, the present invention provides a transaction group, a transaction group construction method, a storage medium, an apparatus and a system.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the invention is as follows:
a transaction group comprises a plurality of transactions, the transactions comprise transaction contents, Hash values and signatures, the transactions are connected with each other through a Hash chain table, and the Hash values of head transactions of the transaction group are stored in each transaction.
Preferably, the Hash chain table is a Hash value of one of the adjacent transactions.
Preferably, the Hash value of the transaction comprises the contents of the transaction, the Hash value of the next transaction and the total number of transactions.
Preferably, the signature includes the contents of the transaction, the Hash value of the next transaction, the total number of transactions and the Hash value of the head transaction of the transaction group; preferably, the total number of transactions is greater than or equal to 2.
Preferably, the entire commission for the transaction group is paid by the head transaction, and no commission is paid for other transactions in the transaction; preferably, the transactions in said set of transactions are contract transactions or payment transactions.
A transaction group construction method comprising the steps of:
firstly, according to any one of the transaction groups, calculating a Hash value of a transaction from a tail transaction to a head transaction of the transaction group, and firstly calculating the Hash value of the tail transaction;
calculating the Hash value of the transaction adjacent to the tail transaction, and calculating the Hash value of each transaction in sequence according to the sequence until the Hash value of the head transaction is calculated;
thirdly, respectively putting the Hash value of the head transaction into each transaction in the transaction group;
and fourthly, calculating SIGHASH of each transaction and calculating a signature.
Preferably, the Hash value of the next transaction in the Hash values of the tail transactions is null.
Preferably, the SIGHASH pattern is SIGHASH _ ALL, SIGHASH _ NONE, or SIGHASH _ SINGLE.
A storage medium for storing one or more programs corresponding to the above-described methods.
An apparatus, the apparatus comprising: one or more processors; memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to perform the method of any one of the above, forming a transaction group as described above.
A system comprising a transaction construction unit and a transaction group construction unit, said transaction construction unit forming transactions in a transaction group of the kind described above according to the method described above, said transaction group construction unit forming a transaction group of the kind described above according to the method described above.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
(1) in the invention, each transaction is mutually independent and can be executed according to the original transaction logic without invading any business logic of the transaction;
(2) in the invention, the transactions are connected with each other through a Hash chain table, and the head transaction Hash value of the transaction group is stored in each transaction, so that any party in the transaction group modifies the original transaction and causes the change of the head transaction, thereby the transaction group is incorrect, and after one party signs, the other party modifies the transaction to ensure the atomicity of the transaction group.
Drawings
FIG. 1 is a diagram of transaction information on a blockchain in the prior art;
FIG. 2 is a schematic diagram of a transaction group and method of construction thereof according to the present invention;
FIG. 3 is a schematic diagram of a transaction group and its construction when the total number of transactions is 2;
FIG. 4 is a schematic diagram of a transaction group and its construction when the total number of transactions is 3;
FIG. 5 is a schematic view of the apparatus of the present invention;
FIG. 6 is a diagram illustrating address distribution in a client;
FIG. 7 is a schematic diagram of the distribution of transaction components within and between clients on the system and device.
Detailed Description
For a further understanding of the present invention, reference will now be made in detail to the embodiments illustrated in the drawings.
Example 1
A transaction group comprises a plurality of transactions, the transactions comprise transaction contents, Hash values and signatures, the transactions are connected with each other through a Hash chain table, and the Hash values of head transactions of the transaction group are stored in each transaction.
With this structure, any transaction is deleted from the transaction group or modified, and it is easy to determine that the transaction group is erroneous. This assurance is important so that the user can confidently sign his own transaction without fear of other parties modifying any of the transactions.
Example 2
As shown in fig. 2, a transaction group of this embodiment is further improved on the basis of embodiment 1, and the Hash chain table is a Hash value of one of the adjacent transactions. Each transaction in the transaction group is constructed according to the sequence from the tail transaction to the head transaction, the Hash value of the previous transaction is added into the content of the current transaction, two adjacent transactions are associated through the Hash value, finally the head transaction is constructed, the Hash value of the head transaction is put into the content of each transaction, when any transaction in the transaction group is changed, the transaction group generates errors, and any transaction in the transaction group cannot succeed.
Example 3
A transaction group according to this embodiment is further improved on the basis of embodiment 1 or 2, wherein the Hash value of the transaction includes the transaction content, the Hash value of the next transaction and the total number of transactions. When the transaction is constructed, the Hash value of the next transaction is added, when the content of the previous transaction is changed, the transaction cannot be established, a transaction error occurs, the fact that each transaction in a transaction group cannot be changed is ensured, the fact that each transaction succeeds or fails at the same time is ensured, and the atomicity of the transaction group is ensured. The content of the transaction can comprise intelligent contracts or intelligent assets, and when multiple parties relate to multiple intelligent contracts or intelligent assets, for the mutually dependent transactions, the atomicity of all transactions in execution can be ensured, the execution risk is reduced, and the unfair transactions are avoided.
Example 4
A transaction group of this embodiment is further improved on the basis of embodiment 1 or 2 or 3, wherein the signature includes the transaction content, the Hash value of the next transaction, the total number of transactions and the Hash value of the head transaction of the transaction group; preferably, the total number of transactions is greater than or equal to 2. The Hash value of the next transaction, the total number of the transactions and the Hash value of the head transaction of the transaction group are added into the current transaction signature structure, so that the change of the related transaction, or the change of the number of the transaction group, or the change of the head transaction of the transaction group can be reflected in the current transaction. When one or more trading parties in the trading group sign the trading, and any other trading party or parties in the trading group modify the original trading, the change of the Hash value of the head trading of the trading group can be caused, so that the trading group is incorrect, and the unfair trading is avoided when any party or parties modify the trading after one party or multiple parties sign the trading.
Example 5
A transaction group of this embodiment is further improved on the basis of embodiment 1 or 2 or 3 or 4, wherein the whole commission fee of the transaction group is paid by the head transaction, and the other transactions in the transaction do not need to pay the commission fee; therefore, transaction initiators except the head transaction in the transaction group can initiate the transaction without paying commission charge, and the flexibility of the transaction is improved; when the transaction in the transaction group is contract transaction, different contract contents can be appointed among traders, for example, the contract contents can relate to stock transaction, loan repayment, personal health management, right and interest agreements related to law, will orders, distribution of physical assets, renting and car renting agreements in the property right law, house purchasing, car purchasing loan and the like; when the transaction in the transaction group is a payment transaction, the entity fund is associated with the cryptocurrency, the intelligent asset is associated with the entity asset through the Internet of things, and multi-party traders can legally transfer, exchange and buy and sell the asset/fund, so that the transaction execution efficiency is improved. The multiple transactions are mutually associated, a third-party transaction center such as a bank does not exist, a decentralized design is realized, and the occurrence of accidents such as transaction data tampering and loss is prevented.
Example 6
A transaction group construction method according to the present embodiment constructs a transaction group according to embodiment 1, 2, 3, 4, or 5, and includes the steps of:
firstly, according to a transaction group described in any one of the technical solutions of embodiments 1, 2, 3, 4, and 5, calculating a Hash value of a transaction from a tail transaction to a head transaction of the transaction group, and first calculating the Hash value of the tail transaction; as shown in FIG. 2, N1 is used as the head transaction N1, Nn is used as the tail transaction Nn, and the Hash value of the tail Nn is firstly calculated;
calculating the Hash value of the transaction adjacent to the tail transaction, and calculating the Hash value of each transaction in sequence according to the sequence until the Hash value of the head transaction is calculated; corresponding to fig. 2, the Hash value of the transaction Nn-1 adjacent to the tail transaction is calculated, and the Hash values of the transactions are calculated in sequence according to the sequence until the Hash value of the head transaction N1 is calculated;
thirdly, respectively putting the Hash value of the head transaction into each transaction in the transaction group; corresponding to FIG. 2, the Hash value of head transaction N1 is placed into each transaction in the transaction group;
and fourthly, calculating SIGHASH of each transaction and calculating a signature.
The Hash value of the next transaction in the Hash values of the tail transactions is null, and the SIGHASH mode is SIGHASH _ ALL, SIGHASH _ NONE or SIGHASH _ SINGLE; the single transaction content can be participated by multiple parties, and signature verification is flexible.
Example 7
A storage medium storing one or more programs corresponding to the method of embodiment 6. An apparatus, as shown in fig. 5, comprising: one or more processors; memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to perform the method as described in example 6 to form a transaction group as described in example 1 or 2 or 3 or 4 or 5.
As shown in fig. 5, 6 and 7, the arrow direction in the figures refers to the direction in which the input address points to the output address in the transaction, the client is installed on the device, the method for constructing the transaction group can be executed independently, the transaction group can be formed and sent to the blockchain network, a plurality of wallets are arranged on a single client, each wallet corresponds to a plurality of addresses, a plurality of transactions can be formed among the plurality of addresses, and the transaction group can be constructed through a plurality of transactions which are dependent or associated with each other; in different clients and different wallets, multiple transactions can be constructed among different addresses, and multiple transactions which are mutually dependent or associated can be constructed into a transaction group which is sent to the blockchain network. Because of the atomicity of the transaction group, a group of related transactions can only exist in the same effective block, and the characteristics of the related transactions are the same as those of a single transaction. If the miners only use part of the transactions of the same transaction group when calculating the block, the block cannot be calculated successfully, and the transaction group itself must fail to execute. And in turn, each transaction in the transaction group is constrained not to be sent to different network nodes in the blockchain network respectively, but to be sent to each network node in the blockchain in the form of the transaction group as a whole. The transaction group has the same characteristics of single transaction, and the execution is successful (each transaction in the transaction group is successfully executed) or failed (each transaction in the transaction group is failed), so that the situation that the execution is half (part of the transactions in the transaction group are successfully executed and the other part of the transactions are failed) does not occur.
Example 8
A system comprising a transaction construction unit and a transaction group construction unit, said transaction construction unit forming transactions in a transaction group of examples 1 or 2 or 3 or 4 or 5 according to the method of example 6, said transaction group construction unit forming a transaction group of examples 1 or 2 or 3 or 4 or 5 according to the method of example 6.
Example 9
Guarantee credit and financing scheme
In step S4, when the fund demander sends the financing ratio to the fund supplier public key address (transaction a), the fund supplier puts the digital money or the renminbi into the corresponding account of the fund demander (transaction B), and these two transactions still have a certain risk in the real situation: there is no provision to ensure that the supplier of funds will be able to punch digital or RMB into the corresponding account of the supplier of funds after the supplier of funds has sent the financing money to the supplier of funds.
The transaction group created on the blockchain in this embodiment creatively solves this technical problem, and as shown in fig. 3, the transaction group formed by transaction a and transaction B is: when the transaction A is used as a head transaction and the transaction B is used as a tail transaction, the Hash value of the transaction B is put into the transaction A, and the Hash value of the transaction A is respectively stored in the transaction A and the transaction B. Two transactions are associated, if any one transaction is not executed, deleted or modified, the 2 transactions can not succeed at the same time, and the phenomenon of unfair transactions is avoided; if both execution is successful, then a fair transaction is completed. In this way it can still be ensured that only the fund demander itself can use its associated financing currency and cannot be transferred to other fund demanders for financing; and the financing obtained by the fund demander is not more than the maximum guarantee amount.
The components of the transaction A and the transaction B are the same, and the transaction A and the transaction B comprise transaction content, a Hash value and a signature; the transaction content relates to the transaction amount, input and output addresses, locking time, content needing to be recorded on a blockchain and the like, and the Hash value of the transaction A comprises the content of the transaction A, the Hash value of the transaction B and the total number of transactions 2; the Hash value for transaction B includes the contents of transaction B and the total number of transactions 2; the signature of transaction A comprises the content of transaction A, the Hash value of transaction B, the total number of transactions 2 and the Hash value of transaction A; the signature of transaction B includes the contents of transaction B, the total number of transactions 2, and the Hash value of transaction A. The situation is similar when transaction a is a tail transaction and transaction B is a head transaction. The entire commission for the transaction group is paid by head transaction a and transaction B does not require payment of the commission.
The construction method of the transaction group formed by the transaction A and the transaction B is as follows:
firstly, calculating a Hash value of a transaction from a tail transaction B to a head transaction A of a transaction group, and firstly calculating the Hash value of the tail transaction B;
secondly, calculating a Hash value of a head transaction A adjacent to a tail transaction B;
thirdly, respectively putting the Hash value of the head transaction A into the head transaction A and the tail transaction B;
and fourthly, calculating SIGHASH of each transaction and calculating a signature.
The transaction a and the transaction B may be any one of a single-input single-output transaction, a single-input multiple-output transaction, a multiple-input single-output transaction, and a multiple-input multiple-output transaction.
Loan repayment scheme
The distributed encryption record, confidentiality and non-tamper property of the block chain are utilized, all contents of historical loan records, payroll lines, economic conditions, credit reports and the like of a borrower are recorded on the block chain, the borrower (not limited to financial institutions such as banks and the like, and can be a fund owner) checks the records of the borrower, after the verification is passed, the borrower agrees to the maximum loan amount and writes the maximum loan amount into the block chain, after the borrower agrees to loan, in order to ensure timely payment of the borrower, conditions agreed by both sides, such as payment after the monthly borrower is payed, the borrower needs to pay, otherwise, corresponding punishment conditions are executed, the contract content is recorded on the block chain, the borrower sends the encrypted currency of the loan amount to the borrower through the block chain according to contract agreement, after the unit where the borrower is located issues the payroll to the borrower (transaction A, the condition is assumed to be encrypted currency), the borrower repays the loan to the borrower (transaction B), and in order to ensure on-time repayment, according to the construction mode of the transaction group of the 'guarantee credit and financing scheme' in the embodiment, the borrower and the borrower construct a transaction group, so that two transactions are ensured to be executed successfully at the same time, and on-time repayment is ensured; this form of payment may be applied as one of the ways of payment.
Example 10
Compared with the air conditioning industry, most production and manufacturing industries in the prior art relate to several parties such as raw material suppliers, manufacturers, retailers and consumers, and involve capital exchange in various links such as raw material purchasing, production, manufacturing and processing, retail wholesale and the like, and the conditions of payment due, payment hastening, payment backing, financing, loan borrowing, stockholder interest allocation, staff wage distribution and the like in the transaction process are high in cost, long in time consumption and unfair in some cases. The raw materials supplier, manufacturer, retailer records contracts agreed with each other on the blockchain, and hopefully after the consumer returns money to the retailer (transaction C), the retailer can return money to the manufacturer (transaction D), and the manufacturer can return money to the supplier (transaction E).
As shown in FIG. 4, the transaction group consisting of transactions C, D and E is: when the transaction C is used as a head transaction and the transaction E is used as a tail transaction, the Hash value of the transaction D is put into the transaction C, the Hash value of the transaction E is put into the transaction D, and the Hash values of the transaction A are respectively stored in the transactions C, D and E.
The components of transaction C, D and E are the same, including transaction content, Hash value and signature; the transaction content relates to the transaction amount, input and output addresses, locking time, content needing to be recorded on a blockchain and the like, and the Hash value of the transaction C comprises the content of the transaction C, the Hash value of the transaction D and the total number of transactions 3; the Hash value of transaction D includes the content of transaction D, the Hash value of transaction E, and the total number of transactions 3; the Hash value of transaction E includes the content of transaction E and the total number of transactions 3; the signature of transaction C comprises the content of transaction C, the Hash value of transaction D, the total number of transactions 3 and the Hash value of transaction C; the signature of transaction D includes the content of transaction D, the Hash value of transaction E, the total number of transactions 3, and the Hash value of transaction C; the signature of transaction E includes the contents of transaction E, the total number of transactions 3, and the Hash value of transaction C. The situation is similar when transaction C is a tail transaction and transaction E is a head transaction. The entire commission for the transaction group is paid by head transaction C and transactions D and E do not require payment of the commission.
The construction method of the transaction group formed by the transactions C, D and E is as follows:
firstly, calculating a Hash value of a transaction from a tail transaction E to a head transaction C of a transaction group, and firstly calculating the Hash value of the tail transaction E;
secondly, calculating the Hash value of a transaction D adjacent to the tail transaction E, and then calculating the Hash value of a head transaction C;
thirdly, respectively putting the Hash value of the head transaction C into the transaction D and the tail transaction E;
and fourthly, calculating SIGHASH of each transaction and calculating a signature.
The transactions C, D and E may be single-input single-output transactions, single-input multiple-output transactions, multiple-input single-output transactions, or multiple-input multiple-output transactions, respectively.
The raw material suppliers, manufacturers and retailers can also adopt the transaction association to form a transaction group form when carrying out benefit distribution and wage distribution with personnel in the aspects of stockholders, employees and the like, and the process of benefit distribution and wage distribution is simplified and the good operation of enterprises is kept by combining with intelligent contracts.
The present invention and the embodiments thereof have been described in the above illustrative, but not restrictive, and all the words "head", "tail", "previous", "next", and the like in the description are relative concepts, and the words shown in the drawings are only one of the embodiments of the present invention, and the actual mode and the application scenario are not limited thereto. Therefore, if the person skilled in the art receives the teaching, it is within the scope of the present invention to design the similar manner and embodiments without departing from the spirit of the invention.
Claims (6)
1. A transaction group construction method, characterized in that it comprises the following steps:
firstly, calculating a Hash value of a transaction from a tail transaction to a head transaction of a transaction group, firstly calculating the Hash value of the tail transaction and storing the Hash value of the tail transaction in the last transaction; wherein the transaction group comprises a plurality of transactions, the transactions comprising transaction content, a Hash value, and a signature;
calculating the Hash value of the transaction adjacent to the tail transaction and storing the Hash value into the previous transaction, and sequentially calculating the Hash value of each transaction and storing the Hash value into the previous transaction according to the sequence until the Hash value of the head transaction is calculated;
thirdly, respectively putting the Hash value of the head transaction into each transaction in the transaction group;
and fourthly, calculating SIGHASH of each transaction and calculating a signature.
2. The method of claim 1, wherein the Hash value of the transaction comprises transaction content, a Hash value of a next transaction, and a total number of transactions, and wherein the Hash value of the next transaction in the Hash values of the tail transactions is null.
3. The method of claim 1, wherein the signature comprises the contents of the transaction, the Hash value of the next transaction, the total number of transactions, and the Hash value of the head transaction of the transaction group; and the total number of the transactions is more than or equal to 2, and the Hash value of the next transaction in the Hash values of the tail transactions is null.
4. The method of claim 3, wherein the entire commission for the transaction group is paid by the head transaction, and no commission is paid for other transactions in the transaction group; wherein the transactions in the transaction group are contract transactions or payment transactions.
5. A storage medium, characterized by: a program for storing one or more programs corresponding to the method of any one of claims 1-4.
6. A computer device, characterized by: the apparatus comprises: one or more processors; memory storing one or more programs that, when executed by the one or more processors, cause the one or more processors to perform the method of any of claims 1-4.
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| CN201810695527.9A CN108960826B (en) | 2018-06-29 | 2018-06-29 | Transaction group, transaction group construction method, storage medium, device and system |
| PCT/CN2019/092156 WO2020001369A1 (en) | 2018-06-29 | 2019-06-20 | Transaction group, transaction group construction method, storage medium, device and system |
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| CN109829822B (en) * | 2019-01-28 | 2020-10-23 | 杭州复杂美科技有限公司 | Transaction replacing method, transaction queuing method, device and storage medium |
| CN109741052A (en) * | 2019-01-28 | 2019-05-10 | 杭州复杂美科技有限公司 | Red packet processing method, equipment and storage medium |
| CN110008754A (en) * | 2019-03-18 | 2019-07-12 | 阿里巴巴集团控股有限公司 | A kind of pair of communication record carries out block chain and deposits card method and system |
| CN112488702A (en) * | 2019-04-29 | 2021-03-12 | 创新先进技术有限公司 | Settlement method and device based on block chain and electronic equipment |
| US10991045B2 (en) | 2019-04-29 | 2021-04-27 | Advanced New Technologies Co., Ltd. | Blockchain-based settlement method, apparatus, and electronic device |
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| US20090198619A1 (en) * | 2008-02-06 | 2009-08-06 | Motorola, Inc. | Aggregated hash-chain micropayment system |
| US10713731B2 (en) * | 2016-07-22 | 2020-07-14 | Nec Corporation | Method for secure ledger distribution and computer system using secure distributed ledger technology |
| CN106506146A (en) * | 2016-10-26 | 2017-03-15 | 北京瑞卓喜投科技发展有限公司 | Based on the Transaction Information method of calibration of block chain technology, apparatus and system |
| CN106506638B (en) * | 2016-11-04 | 2020-01-07 | 江苏通付盾科技有限公司 | Block storage method and device in block chain |
| CN107369010A (en) * | 2017-07-25 | 2017-11-21 | 光载无限（北京）科技有限公司 | A kind of creation method of the stored value card based on block chain |
| CN107590658B (en) * | 2017-09-01 | 2020-12-25 | 上海专精特新金融信息服务有限公司 | Block chain based multistage transaction method and device |
| CN108009810A (en) * | 2017-12-27 | 2018-05-08 | 光载无限（北京）科技有限公司 | A kind of Trusted Digital transaction in assets method |
| CN108053211B (en) * | 2017-12-27 | 2021-04-06 | 北京欧链科技有限公司 | Transaction processing method and device based on block chain |
| CN108960826B (en) * | 2018-06-29 | 2021-02-09 | 杭州复杂美科技有限公司 | Transaction group, transaction group construction method, storage medium, device and system |
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