CN107590658B - Block chain based multistage transaction method and device - Google Patents
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Abstract
The embodiment of the invention relates to a block chain based multistage transaction method and device. The method comprises the following steps: determining a first-level transaction contract and recording the first-level transaction contract on a blockchain, wherein the first-level transaction contract comprises a first account, a second account and first information of a target item; in the first-level transaction contract, the first account is a truer of the target item, and the second account is a receiver of the target item; determining a second level transaction contract, and recording the second level transaction contract on the blockchain, wherein the second level transaction contract comprises a second account, a third account and second information of the transaction item; in the second-level transaction contract, the second account is a truer of the target item, and the third account is a receiver of the target item; the first level transaction contract is not visible to the third account on the blockchain. The safety of the transaction information is improved, and the risk of transaction information leakage is reduced.
Description
Technical Field
The invention relates to the technical field of computers, in particular to a block chain based multistage transaction method and device.
Background
In a transaction system, when a project initiator issues a task, a plurality of intermediaries are usually needed before a party who completes the task, namely an actual completing party of the task, can be found, and the intermediaries are generally not free, and transaction information is not very safe and is easily leaked in the existing system. Therefore, it is possible to discard the middleman when the actual completer agrees with the project initiator. This is particularly disadvantageous when dealing with health when the middleman is abandoned, since it plays a crucial role in the ability of the middleman to complete the task.
Therefore, the technical problem to be solved urgently by those skilled in the art is how to provide security of transaction information and reduce the risk of transaction leakage.
Disclosure of Invention
The embodiment of the invention provides a block chain based multistage transaction method and device. The safety of the transaction information is improved, and the risk of transaction information leakage is reduced.
In one aspect, an embodiment of the present invention provides a method for multi-level transaction based on a blockchain. The method comprises the following steps: determining a first-level transaction contract and recording the first-level transaction contract on a blockchain, wherein the first-level transaction contract comprises a first account, a second account and first information of a target item; in the first-level transaction contract, the first account is a truer of the target project, the second account is a receiver of the target project, and the first information is contract information of the first account and the second account for the target project; determining a second level transaction contract, and recording the second level transaction contract on the blockchain, wherein the second level transaction contract comprises a second account, a third account and second information of the transaction item; in the second-level transaction contract, the second account is a truer of the target project, the third account is a receiver of the target project, and the second information is contract information of the second account and the third account for the target project; the first level transaction contract is not visible to the third account on the blockchain.
Optionally, the first account being a principal of the target item includes: the first account is an initiator of the target item.
Optionally, the method further comprises: and after the transaction contract is finished, transmitting third information through an approval mechanism, wherein the third information is communication information between accounts.
Optionally, the third information transmission through the approval mechanism includes: the first account determines third information; sending the third information from the first account to the second account based on the blockchain; after obtaining the confirmation of the second account, sending the third information to a third account based on the block chain, wherein the first account and the third account are not visible to each other on the block chain;
or, the third account determines third information; sending the third information to a second account by a third account based on the blockchain; and after the confirmation of the second account is obtained, the third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain.
Optionally, further comprising: determining indication information of transaction end; sending, by a third account, the indication to the second account; sending, by the second account, the indication to the first account.
In a second aspect, an embodiment of the present invention provides an apparatus for block chain based multi-level transaction. The method comprises the following steps: the system comprises a first determining unit, a second determining unit and a third determining unit, wherein the first determining unit is used for determining a first-level transaction contract and recording the first-level transaction contract on a blockchain, and the first-level transaction contract comprises a first account, a second account and first information of a target item; in the first-level transaction contract, the first account is a truer of the target project, the second account is a receiver of the target project, and the first information is contract information of the first account and the second account for the target project; a second determining unit, configured to determine a second-level transaction contract, and record the second-level transaction contract on the blockchain, where the second-level transaction contract includes a second account, a third account, and second information of the transaction item; in the second-level transaction contract, the second account is a truer of the target project, the third account is a receiver of the target project, and the second information is contract information of the second account and the third account for the target project; the first level transaction contract is not visible to the third account on the blockchain.
Optionally, the first account being a principal of the target item includes: the first account is an initiator of the target item.
Optionally, the method further comprises: and the examination and approval unit is used for transmitting third information through an examination and approval mechanism after the transaction contract is finished, wherein the third information is communication information between accounts.
Optionally, the approval unit is further configured to,
the first account determines third information;
sending the third information from the first account to the second account based on the blockchain;
after obtaining the confirmation of the second account, sending the third information to a third account based on the block chain, wherein the first account and the third account are not visible to each other on the block chain;
alternatively, the first and second electrodes may be,
the third account determines third information;
sending the third information to a second account by a third account based on the blockchain;
and after the confirmation of the second account is obtained, the third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain.
Optionally, the method further comprises:
a third determination unit for determining indication information of transaction end;
the first sending unit is used for sending the indication information to the second account by a third account;
and the second sending unit is used for sending the indication information to the first account by the second account.
By the block chain technology, transaction contracts are established layer by layer, and the transaction contracts are not visible to accounts between different layers. Therefore, the trade secret is protected, the possibility that the middleman is abandoned due to information leakage is reduced, and the safety of the trade information is improved. Furthermore, according to the embodiment of the invention, based on an approval mechanism of layer-by-layer contracts, the communication efficiency of the initiator and the actual executor can be realized, the mutual information can be ensured to be invisible, the trade secret is protected, the possibility of information leakage is reduced, and meanwhile, the problems of too many middlers, complicated approval process, overlong approval time and the like are solved.
Drawings
FIG. 1 is a schematic diagram of a scenario;
fig. 2 is a flowchart of a method for multi-level transaction based on block chain according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for block chain-based multi-level transaction according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The embodiment of the invention provides a block chain based multistage transaction method and device. The method is suitable for the application scenario shown in fig. 1, and as shown in fig. 1, the method includes: one or more clients 101, such as notebook computers, desktop computers, mobile terminals, and the like; one or more blockchain nodes 102, one or more mining machines 103, e.g., computers with greater graphical computing power; wherein one or more clients 101, one or more judicial supervision servers 104 and one or more mining machines 103 are connected with one or more blockchain nodes 102.
One or more blockchain nodes 102 store blockchains; the client 101 is used for generating a trading contract, and generally one client corresponds to one or more accounts; the mining machine is used for packaging the transaction information generated in a period of time and putting the transaction information into the block chain.
The embodiment of the invention establishes contracts layer by layer through the block chain technology, and the account is not a transaction contract directly related to the account and is invisible in the block chain, thereby protecting the leakage of business information and ensuring the information transmission to be safer and improving the efficiency.
For the purpose of facilitating understanding of the embodiments of the present invention, the following description will be further explained with reference to specific embodiments, which are not to be construed as limiting the embodiments of the present invention.
Fig. 2 is a flowchart of a method for multi-level transaction based on blockchain according to an embodiment of the present invention. The method may be implemented by a terminal, an ore machine, or a block chain node in the scenario shown in fig. 1. As shown in fig. 2, the method specifically includes:
and S210, determining a first-level trading contract and recording the first-level trading contract on the blockchain. The first-level transaction contract comprises a first account, a second account and first information of a target project, wherein in the first-level transaction contract, the first account is an entrusting party of the target project, the second account is a receiving party of the target project, and the first information is signing information of the first account and the second account for the target project.
The first account may be an initiator of the target project, and the initiator of the target project as a delegator may determine a recipient of the target project, that is, the second account, by means of a form of directed invitation or public publishing, and the like.
The first account may also be a recipient of a target item in a superior trading contract of a first level trading contract, in which the first account may act as a principal to determine a next recipient, i.e., a second account, of the target item in the form of targeted offers or public releases, etc.
The contract information for the target item of the delegator and the transferee of the target item may be registered and recorded in the block. The contract information of the trustee and the adopter of the target project aiming at the target project can comprise one or more of the following items: the contact information of the first account and the second account; a contract made by the first account and the second account for the target project; the completion mode agreed by both parties; contract amount agreed upon by both parties, etc.
The target project may be an engineering project, a financial project, a scientific research project, a development project, and the like.
Taking an engineering project as an example, the first account may be an account of a non-first party, while the second account may be an account of a general package and the third account may be an account of a subcontract.
And S220, determining a second-level trading contract and recording the second-level trading contract on the blockchain. The second level transaction contract comprises second information of the second account, the third account and the transaction item; in the second-level transaction contract, the second account is an entrusting party of the target project, the third account is a receiving party of the target project, and the second information is the signing information of the second account and the third account for the target project; the first level trade contract is not visible to the third account on the blockchain.
The target item's recipient, i.e., the second account, in the primary trading contract may find the next target item's recipient, i.e., the third account, in the form of a directed offer or public posting, etc., where the second account may be considered an intermediary. The contract information for the target item of the delegator and the transferee of the target item may be registered and recorded in the block.
The method can be realized by encrypting the transaction contracts, or setting the transaction contracts to be hidden, or setting the authority of the account, and the like, and the transaction contracts of different levels are mutually isolated, namely, one account can only view the transaction contracts which are used as an entrusting party or a receiving party in the transaction contracts in a block chain.
For example, each account has its public and private keys associated with it. When reading a transaction contract in a block chain, information of a private key signature and an account need to be provided, and after the information is verified by a public key corresponding to the account, the information of the transaction contract which is used as an entrusting party or an accepting party in the transaction contract is sent to the account.
For another example, permissions may be set for each account for which information other than permissions in the blockchain is not visible.
Third level contract information, fourth level contract information, etc. may also be determined, among other things, until the transaction is complete. The determination of the third level contract and the fourth level contract is similar to the determination of the first level contract and the second level contract in steps S210 and S220, and is not described in detail.
After determining that the transaction is complete, for example, the second level contract is the lowest level contract, at which point the third account determines that the transaction is complete, i.e., the target item is specifically executed by the third account. Then an indication of the end of the transaction may be sent by the third account to the second account. After the second account determines that the transaction is finished, for example, the client corresponding to the second account sends a confirmation instruction, and the second account may send an instruction of finishing the transaction to the first account until the instruction of finishing the transaction is sent to the account corresponding to the target item initiator.
And S230, after the transaction contract is finished, transmitting third information through an approval mechanism, wherein the third information is communication information between accounts.
For example, an actual execution scheme of the target project is generally formulated by a party who actually completes the project, but the actual execution scheme needs to be confirmed by a project initiator, and at this time, a party who actually executes the target project may send the project initiator to the project initiator through an approval mechanism.
The approval mechanism is a hierarchy based on the trading contract and is sent and confirmed step by step. However, accounts are not visible to each other between different tiers.
In particular, the following steps need to be performed:
the first account determines third information; sending third information from the first account to the second account based on the chain; and after the confirmation of the second account is obtained, third information is sent to a third account based on the block chain, and the first account and the third account are not visible mutually on the block chain. Or, the third account determines third information; sending third information to the second account from the third account based on the block chain; and after the confirmation of the second account is obtained, third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain. In the implementation of the embodiment of the present invention, the transfer between multiple accounts may be required, but all of the above steps are required.
By the block chain technology, transaction contracts are established layer by layer, and the transaction contracts are not visible to accounts between different layers. Therefore, the trade secret is protected, the possibility that the middleman is abandoned due to information leakage is reduced, and the safety of the trade information is improved. Furthermore, according to the embodiment of the invention, based on an approval mechanism of layer-by-layer contracts, the communication efficiency of the initiator and the actual executor can be realized, the mutual information can be ensured to be invisible, the trade secret is protected, the possibility of information leakage is reduced, and meanwhile, the problems of too many middlers, complicated approval process, overlong approval time and the like are solved.
Fig. 3 is a schematic structural diagram of a device for block chain-based multi-level transaction according to an embodiment of the present invention. The device specifically includes:
a first determining unit 301, configured to determine a first-level transaction contract, and record the first-level transaction contract on a blockchain, where the first-level transaction contract includes a first account, a second account, and first information of a target item; in the first-level transaction contract, the first account is a truer of the target project, the second account is a receiver of the target project, and the first information is contract information of the first account and the second account for the target project;
a second determining unit 302, configured to determine a second-level transaction contract, where the second-level transaction contract includes a second account, a third account, and second information of the transaction item, and is recorded on the blockchain; in the second-level transaction contract, the second account is a truer of the target project, the third account is a receiver of the target project, and the second information is contract information of the second account and the third account for the target project; the first level transaction contract is not visible to the third account on the blockchain.
Optionally, the first account being a principal of the target item includes: the first account is an initiator of the target item.
Optionally, the method further comprises: and an approval unit 303, configured to transmit third information through an approval mechanism after the transaction contract is finished, where the third information is communication information between accounts.
Optionally, the approval unit 303 is further configured to,
the first account determines third information;
sending the third information from the first account to the second account based on the blockchain;
after obtaining the confirmation of the second account, sending the third information to a third account based on the block chain, wherein the first account and the third account are not visible to each other on the block chain;
alternatively, the first and second electrodes may be,
the third account determines third information;
sending the third information to a second account by a third account based on the blockchain;
and after the confirmation of the second account is obtained, the third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain.
Optionally, the method further comprises:
a third determination unit for determining indication information of transaction end;
the first sending unit is used for sending the indication information to the second account by a third account;
and the second sending unit is used for sending the indication information to the first account by the second account.
Those of skill would further appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied in hardware, a software module executed by a processor, or a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the scope of the present invention should be included in the scope of the present invention.
Claims (8)
1. A method for multi-level transaction based on block chain, comprising:
determining a first-level transaction contract and recording the first-level transaction contract on a blockchain, wherein the first-level transaction contract comprises a first account, a second account and first information of a target item; in the first-level transaction contract, the first account is a truer of the target project, the second account is a receiver of the target project, and the first information is contract information of the first account and the second account for the target project;
determining a second level transaction contract, and recording the second level transaction contract on the blockchain, wherein the second level transaction contract comprises a second account, a third account and second information of the target item; in the second-level transaction contract, the second account is a truer of the target project, the third account is a receiver of the target project, and the second information is contract information of the second account and the third account for the target project; the first level transaction contract is not visible to the third account on the blockchain;
and after the transaction contract is finished, transmitting third information through an approval mechanism, wherein the third information is communication information between accounts.
2. The method of claim 1, wherein the first account being a principal of the target item comprises: the first account is an initiator of the target item.
3. The method of claim 1, wherein the third information transfer via an approval mechanism comprises:
the first account determines third information;
sending the third information from the first account to the second account based on the blockchain;
after obtaining the confirmation of the second account, sending the third information to a third account based on the block chain, wherein the first account and the third account are not visible to each other on the block chain;
alternatively, the first and second electrodes may be,
the third account determines third information;
sending the third information to a second account by a third account based on the blockchain;
and after the confirmation of the second account is obtained, the third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain.
4. The method of claim 1 or 2, further comprising:
determining indication information of transaction end;
sending, by a third account, the indication to the second account;
sending, by the second account, the indication to the first account.
5. An apparatus for multi-level transactions based on blockchain, comprising:
the system comprises a first determining unit, a second determining unit and a third determining unit, wherein the first determining unit is used for determining a first-level transaction contract and recording the first-level transaction contract on a blockchain, and the first-level transaction contract comprises a first account, a second account and first information of a target item; in the first-level transaction contract, the first account is a truer of the target project, the second account is a receiver of the target project, and the first information is contract information of the first account and the second account for the target project;
a second determining unit, configured to determine a second-level transaction contract, and record the second-level transaction contract on the blockchain, where the second-level transaction contract includes a second account, a third account, and second information of the target item; in the second-level transaction contract, the second account is a truer of the target project, the third account is a receiver of the target project, and the second information is contract information of the second account and the third account for the target project; the first level transaction contract is not visible to the third account on the blockchain;
and the examination and approval unit is used for transmitting third information through an examination and approval mechanism after the transaction contract is finished, wherein the third information is communication information between accounts.
6. The apparatus of claim 5, wherein the first account being a principal of the target item comprises: the first account is an initiator of the target item.
7. The apparatus of claim 5, wherein the approval unit is further configured to,
the first account determines third information;
sending the third information from the first account to the second account based on the blockchain;
after obtaining the confirmation of the second account, sending the third information to a third account based on the block chain, wherein the first account and the third account are not visible to each other on the block chain;
alternatively, the first and second electrodes may be,
the third account determines third information;
sending the third information to a second account by a third account based on the blockchain;
and after the confirmation of the second account is obtained, the third information is sent to the first account based on the block chain, and the first account and the third account are not visible mutually on the block chain.
8. The apparatus of claim 5 or 6, further comprising:
a third determination unit for determining indication information of transaction end;
the first sending unit is used for sending the indication information to the second account by a third account;
and the second sending unit is used for sending the indication information to the first account by the second account.
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| CN201710779365.2A CN107590658B (en) | 2017-09-01 | 2017-09-01 | Block chain based multistage transaction method and device |
| PCT/CN2018/103639 WO2019042433A1 (en) | 2017-09-01 | 2018-08-31 | Method and device for blockchain-based multi-level transactions |
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| 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 |
| CN108270551B (en) * | 2018-02-02 | 2020-09-25 | 上海二秒科技有限公司 | Security service construction system on block chain |
| CN108537498A (en) * | 2018-03-15 | 2018-09-14 | 上海卓辰信息科技有限公司 | Interorganizational project management method, system, equipment and medium based on block chain |
| CN108805707A (en) * | 2018-05-21 | 2018-11-13 | 阿里巴巴集团控股有限公司 | Works copyright revenue distribution method and device based on block chain |
| CN108898289A (en) * | 2018-06-13 | 2018-11-27 | 鹰投（上海）海洋科技发展有限公司 | Project completion management system and its implementation 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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| CN106910099A (en) * | 2015-12-22 | 2017-06-30 | 解珂 | It is the used car network trading method synchronous with off-line transaction realization based on Web technologies |
| CN106934715A (en) * | 2017-01-23 | 2017-07-07 | 天津米游科技有限公司 | A kind of high frequency method of commerce and system based on block chain |
| CN106897902A (en) * | 2017-02-21 | 2017-06-27 | 中链科技有限公司 | Service transacting method, system and trading server based on block chain technology |
| CN107038585A (en) * | 2017-05-22 | 2017-08-11 | 上海简慧信息技术有限公司 | A kind of technology business business platform method of commerce |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107590658A (en) | 2018-01-16 |
| WO2019042433A1 (en) | 2019-03-07 |
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