CN106570757B - Crowd funding method, device and system based on block chain - Google Patents
Crowd funding method, device and system based on block chain Download PDFInfo
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- CN106570757B CN106570757B CN201610976300.2A CN201610976300A CN106570757B CN 106570757 B CN106570757 B CN 106570757B CN 201610976300 A CN201610976300 A CN 201610976300A CN 106570757 B CN106570757 B CN 106570757B
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Abstract
The invention provides a crowd funding method, a crowd funding device and a crowd funding system based on a block chain, wherein the crowd funding method comprises the following steps: receiving crowd funding information issued by a project party through a first crowd funding platform; writing the crowd funding information into a block link point corresponding to a first crowd funding platform in a block chain system; respectively synchronizing data in the block chain nodes corresponding to the first crowd-funding platform into each block chain node corresponding to at least one second crowd-funding platform in the block chain system; receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform; and writing the crowd-funding transaction information into block chain link points corresponding to crowd-funding platforms which send the information, and synchronizing data in the block chain nodes into block chain nodes corresponding to other crowd-funding platforms in the first crowd-funding platform and the at least one second crowd-funding platform. The device includes: receiving unit, memory cell and synchronization unit. The scheme can realize crowd funding across crowd funding platforms.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a crowd funding method, device and system based on a block chain.
Background
Crowd funding is a mode of recruiting project funds to net friends in a group purchase and pre-purchase mode, and the crowd funding process mainly comprises the following steps: the project side issues the financing project and the corresponding asset equity through the crowd funding platform, the investor checks and subscribes a corresponding amount of assets through the crowd funding platform, after the crowd funding is successful, the project side obtains funds spent by the investor for purchasing the assets, develops the corresponding project by utilizing the obtained funds, and pays corresponding returns to the investor according to the asset equity.
At present, when crowd funding is carried out, a project party selects a crowd funding platform to release crowd funding projects of the project party, and crowd funding assets of the project party are sold through the crowd funding platform.
For the current crowd-funding method, different crowd-funding platforms have respective databases, and the databases of the crowd-funding platforms cannot share data, so that crowd-funding across the crowd-funding platforms cannot be realized, and investors need to register accounts of the different crowd-funding platforms to purchase crowd-funding items released by the different crowd-funding platforms.
Disclosure of Invention
The embodiment of the invention provides a crowd funding method, device and system based on a block chain, which can realize crowd funding on a cross-crowd funding platform.
The embodiment of the invention provides a crowd funding method based on a block chain, which comprises the following steps:
receiving crowd funding information issued by a project party through a first crowd funding platform;
writing the crowd funding information into a block link point corresponding to the first crowd funding platform in a block chain system;
respectively synchronizing data in the block chain nodes corresponding to the first crowd-funding platform into each block chain node corresponding to at least one second crowd-funding platform in the block chain system;
receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform;
and writing the crowd-funding transaction information into block chain link points corresponding to crowd-funding platforms which send the information, and synchronizing data in the block chain nodes into block chain nodes corresponding to other crowd-funding platforms in the first crowd-funding platform and the at least one second crowd-funding platform.
Preferably, the first and second electrodes are formed of a metal,
the crowd funding information includes: crowd funding project information and asset information corresponding to the crowd funding project information, wherein,
the asset information includes: any one or more of equity information, debt information, profit information, commonweal information, product information, and service information.
Preferably, the first and second electrodes are formed of a metal,
the writing of the crowd-funding information into a block link point in a block chain system corresponding to the first crowd-funding platform comprises:
encrypting the crowd funding information through a preset public key, and writing the encrypted crowd funding information into block link points corresponding to the first crowd funding platform;
after the synchronizing the data in the blockchain nodes corresponding to the first crowd-funded platform into the blockchain nodes corresponding to at least one second crowd-funded platform in the blockchain system, further includes:
and sending a private key corresponding to the public key to one or more of the at least one second crowd-funding platform, so that the second crowd-funding platform receiving the private key decrypts the crowd-funding data recorded in the respective corresponding block link point.
Preferably, the first and second electrodes are formed of a metal,
the receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform includes:
receiving asset underwriting registration information sent by the first crowd-funding platform and the at least one second crowd-funding platform, wherein the asset underwriting registration information is formed by the first crowd-funding platform or the second crowd-funding platform according to an asset underwriting process of an investor, and the asset underwriting process is performed by the investor according to the crowd-funding information displayed by the first crowd-funding platform and the at least one second crowd-funding platform;
receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor purchases assets after crowd funding succeeds;
the writing of the crowd funding transaction information into the block link points corresponding to the crowd funding platform sending the information comprises the following steps:
and writing the asset subscription registration information and the crowd funding result registration information into a block chain node corresponding to a crowd funding platform which sends the information.
Preferably, the first and second electrodes are formed of a metal,
the receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform includes:
receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor purchases assets after crowd funding succeeds;
the writing of the crowd funding transaction information into the block link points corresponding to the crowd funding platform sending the information comprises the following steps:
and writing the asset subscription registration information and the crowd funding result registration information into a block chain node corresponding to a crowd funding platform which sends the information.
The embodiment of the invention also provides a crowd funding device based on the block chain, which comprises the following components: the device comprises a receiving unit, a storage unit and a synchronization unit;
the receiving unit is used for receiving crowd-funding information issued by a project party through a first crowd-funding platform and receiving crowd-funding transaction information sent by the first crowd-funding platform and at least one second crowd-funding platform;
the storage unit is used for writing the crowd-funding information received by the receiving unit into a block link point corresponding to the first crowd-funding platform in a block chain system, and writing the crowd-funding transaction information received by the receiving unit into a block link point corresponding to a crowd-funding platform which sends the crowd-funding transaction information;
the synchronizing unit is used for synchronizing data in the block chain nodes written with new information to other block chain nodes corresponding to the first crowd-funding platform and the at least one second crowd-funding platform in the block chain system after the crowd-funding information and the crowd-funding transaction information are written into the corresponding block chain link points by the storage unit.
Preferably, the apparatus further comprises: a transmitting unit;
the storage unit is used for encrypting the crowd funding information through a preset public key and writing the crowd funding information after encryption into block link points corresponding to the first crowd funding platform;
the sending unit is configured to send a private key corresponding to the public key to one or more of the at least one second crowd-funding platform, so that the second crowd-funding platform that receives the private key decrypts the crowd-funding data recorded in the block link points corresponding to the second crowd-funding platform.
Preferably, the first and second electrodes are formed of a metal,
the receiving unit is used for receiving asset subscription registration information sent by the first crowd-funding platform and the at least one second crowd-funding platform, wherein the asset subscription registration information is formed by the first crowd-funding platform and the at least one second crowd-funding platform according to an asset subscription process of an investor, and the asset subscription process is performed by the investor according to the crowd-funding information displayed by the first crowd-funding platform and the at least one second crowd-funding platform; and receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor underwrites assets after crowd funding succeeds;
the storage unit is used for writing the asset subscription registration information and the crowd funding result registration information received by the receiving unit into a block chain node corresponding to a crowd funding platform which sends the information.
Preferably, the first and second electrodes are formed of a metal,
the receiving unit is used for receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information for refunding money to an investor after crowd funding fails or investor asset information representing the situation of underwriting assets by the investor after crowd funding succeeds;
the storage unit is used for writing the crowd funding result registration information received by the receiving unit into a block chain node corresponding to a crowd funding platform which sends the information.
The embodiment of the invention also provides a crowd funding system based on the block chain, which comprises the following steps: the block chain-based crowd funding device comprises a first crowd funding platform, at least one second crowd funding platform and any one of the crowd funding devices based on the block chain provided by the embodiment;
the first crowd-funding platform is used for receiving crowd-funding information issued by a project party and sending the crowd-funding information to the crowd-funding device based on the block chain; the crowd funding transaction information of crowd funding corresponding to the crowd funding information on the crowd funding platform is obtained, and the obtained crowd funding transaction information is sent to the crowd funding device based on the block chain;
each crowd-funding platform is used for obtaining crowd-funding transaction information of crowd-funding corresponding to the crowd-funding information on the crowd-funding platform, and the obtained crowd-funding transaction information is sent to the crowd-funding device based on the block chain.
The embodiment of the invention provides a block chain-based method, a device and a system.A project side issues crowd funding information through a first crowd funding platform, writes the crowd funding information into block chain link points corresponding to the first crowd funding platform in a block chain system, and synchronizes data in the block chain link points corresponding to the first crowd funding platform into the block chain link points corresponding to at least one second crowd funding platform in the block chain system; and respectively carrying out crowd funding transaction by the first crowd funding platform and the at least one second crowd funding platform according to crowd funding information in the respective corresponding block chain node, and respectively writing the crowd funding transaction information into the respective corresponding block chain node. Because the block chain link points corresponding to the crowd-funding platforms can synchronize data with each other, the data stored in the block chain nodes corresponding to the crowd-funding platforms are the same, namely the crowd-funding platforms share the same database; the block chain system has the characteristics of non-tampering and traceability, so that the crowd funding platforms are restrained from being incapable of randomly changing crowd funding data, and the credibility of the data in the block chain system is ensured; therefore, each crowd-funding platform can carry out crowd-funding through the same mutually-trusted block chain system, and crowd-funding of the cross-crowd-funding platform is achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a flowchart of a crowd funding method based on a block chain according to an embodiment of the present invention;
fig. 2 is a flowchart of a crowd funding method based on a block chain according to another embodiment of the present invention;
fig. 3 is a schematic diagram of a device where a crowd-funding apparatus based on a block chain is located according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a crowd-funding apparatus based on a block chain according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a crowd-funding system based on a block chain 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 and more complete, the technical solutions in the embodiments of the present invention will be 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, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a crowd funding method based on a block chain, where the method may include the following steps:
step 101: receiving crowd funding information issued by a project party through a first crowd funding platform;
step 102: writing the crowd funding information into a block link point corresponding to the first crowd funding platform in a block chain system;
step 103: respectively synchronizing data in the block chain nodes corresponding to the first crowd-funding platform into each block chain node corresponding to at least one second crowd-funding platform in the block chain system;
step 104: receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform;
step 105: and writing the crowd-funding transaction information into block chain link points corresponding to crowd-funding platforms which send the information, and synchronizing data in the block chain nodes into block chain nodes corresponding to other crowd-funding platforms in the first crowd-funding platform and the at least one second crowd-funding platform.
The embodiment of the invention provides a crowd funding method based on a block chain, which comprises the steps that after a project party publishes crowd funding information through a first crowd funding platform, the crowd funding information is written into block chain link points corresponding to the first crowd funding platform in a block chain system, and data in the block chain link points corresponding to the first crowd funding platform are synchronized into the block chain link points corresponding to at least one second crowd funding platform in the block chain system; and respectively carrying out crowd funding transaction by the first crowd funding platform and the at least one second crowd funding platform according to crowd funding information in the respective corresponding block chain node, and respectively writing the crowd funding transaction information into the respective corresponding block chain node. Because the block chain link points corresponding to the crowd-funding platforms can synchronize data with each other, the data stored in the block chain nodes corresponding to the crowd-funding platforms are the same, namely the crowd-funding platforms share the same database; the block chain system has the characteristics of non-tampering and traceability, so that the crowd funding platforms are restrained from being incapable of randomly changing crowd funding data, and the credibility of the data in the block chain system is ensured; therefore, each crowd-funding platform can carry out crowd-funding through the same mutually-trusted block chain system, and crowd-funding of the cross-crowd-funding platform is achieved.
In one embodiment of the invention, crowd funding information issued by a project party through a first crowd funding platform comprises crowd funding project information and asset information corresponding to the crowd funding project information, wherein the asset information comprises any one or more of equity information, debt information, income information, benefit information, product information and service information.
The detailed information of the crowd funding project issued by the project party can be determined through the crowd funding project information, the assets issued by the project party and commitments made to the investor can be determined through the asset information, the crowd funding project information and the asset information are written into the block chain system, the crowd funding project information and the asset information cannot be tampered, the behavior of the project party issuing the crowd funding information is deterred, and the authenticity of the crowd funding information issued by the project party is guaranteed.
The asset information may include any one or more of share right information, credit right information, income information, benefit information, product information, and service information, so that the crowd funding method based on the block chain provided in the embodiment of the present invention may be applied to various crowd funding, and is more applicable than the crowd funding method based on the block chain, such as product crowd funding, service crowd funding, and the like, thereby ensuring that the crowd funding method based on the block chain has higher applicability.
In one embodiment of the invention, after crowd funding information sent by a first crowd funding platform is received, the received crowd funding information is encrypted through a preset public key, and the encrypted crowd funding information is written into block link points corresponding to the first crowd funding platform; after data in the block chain nodes corresponding to the first crowd-funding platform are synchronized to the block chain nodes corresponding to the at least one second crowd-funding platform, a private key corresponding to a preset public key is sent to one or more of the at least one second crowd-funding platform, and the second crowd-funding platform receiving the private key can decrypt crowd-funding data in the block chain nodes corresponding to the second crowd-funding platform through the received private key.
Before the crowd-funding data are written into the block chain nodes corresponding to the first crowd-funding platform, the crowd-funding data are encrypted through a preset public key, so that after the data in the block chain nodes corresponding to the first crowd-funding platform are synchronized into the block chain nodes corresponding to the second crowd-funding platforms, the crowd-funding data stored in the block chain nodes corresponding to the second crowd-funding platforms are all in an encrypted state; sending a private key corresponding to a preset public key to at least one appointed second crowd-funding platform according to the requirement of a project party, or sending the private key corresponding to the preset public key to at least one second crowd-funding platform cooperating with the first crowd-funding platform; the second crowd-funding platform which receives the private key decrypts crowd-funding data in the corresponding block chain node through the private key, and after the crowd-funding data are decrypted, crowd-funding project information and asset information are obtained, so that crowd-funding projects can be displayed and crowd-funding assets can be sold; and the second crowd-funding platform which does not receive the private key cannot display and sell the corresponding crowd-funding because the second crowd-funding platform cannot decrypt the crowd-funding data.
Although each crowd-funding platform shares a database in the form of a block chain system, the authority of each crowd-funding platform can be limited by encrypting data in the block chain system, the crowd-funding platform which obtains a decryption private key can display and sell crowd-funding products, the crowd-funding platform which does not obtain the decryption private key cannot display and sell crowd-funding products, and therefore the crowd-funding platform with the display and sale authority can be selected according to requirements, the controllable benefits of the crowd-funding platform and a project party are guaranteed, and the applicability of the crowd-funding method based on the block chain is improved.
According to the content of the crowd funding transaction information, the implementation of steps 104 and 105 in the embodiment shown in fig. 1 is different. The following provides two different forms of crowd funding transaction information, which are respectively:
the first form: crowd funding transaction information including asset subscription registration information and crowd funding result registration information;
the second form: crowd funding transaction information including crowd funding result registration information;
the implementation of steps 104 and 105 in the embodiment shown in fig. 1 is described below with respect to the crowd funding transaction information in the first form and the second form:
for form one:
step 104 comprises: receiving asset subscription registration information sent by a first crowd-funding platform and at least one second crowd-funding platform, wherein the asset subscription registration information is formed by the first crowd-funding platform and the at least one second crowd-funding platform according to an asset subscription process of an investor, and the asset subscription process is carried out by the investor according to crowd-funding information displayed by the first crowd-funding platform and the at least one second crowd-funding platform; receiving crowd funding result registration information sent by a first crowd funding platform and at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation of the investor in underwriting assets after the crowd funding succeeds;
step 105 comprises: and writing the received asset subscription registration information and crowd funding result registration information into a block chain node corresponding to the crowd funding platform which sends the information.
In particular, the amount of the solvent to be used,
the method comprises the steps that a first crowd-funding platform and at least one second crowd-funding platform display crowd-funding projects and corresponding asset conditions on the respective crowd-funding platform according to crowd-funding information in a block chain node corresponding to the first crowd-funding platform and the second crowd-funding platform, an investor subscribes to corresponding assets through the first crowd-funding platform or the second crowd-funding platforms, and then locks funds paid by the investor to form corresponding asset subscription registration information, the corresponding asset subscription registration information is formed in each asset subscription process of the investor, and the asset subscription registration information is written into a block chain node corresponding to the crowd-funding platform for transaction;
because the data in the block chain nodes corresponding to each crowd-funding platform can be synchronized, the first crowd-funding platform and each second crowd-funding platform judge whether the crowd-funding target is reached in the preset crowd-funding time according to the asset subscription registration information in the block chain nodes corresponding to the first crowd-funding platform and the second crowd-funding platforms respectively, if the crowd-funding target is reached in the crowd-funding time, the success of crowd-funding is judged, and otherwise, the failure of crowd-funding is judged. For each crowd funding platform, if crowd funding is judged to fail, refunding funds of an investor purchasing crowd funding assets from the crowd funding platform to form corresponding investor refund information, and writing the formed investor refund information into block chain link points corresponding to the crowd funding platform; and if the crowd funding is judged to be successful, forming investor asset information comprising any one or more of project party ID, project party password, asset registration ID, investor ID, transaction quantity, asset validity period and electronic contract according to asset information of an investor purchasing crowd funding assets from the crowd funding platform, and writing the formed investor asset information into a block chain node corresponding to the crowd funding platform.
Each asset transaction process of each crowd-funding platform forms corresponding asset subscription registration information, and the asset subscription registration information corresponding to each asset transaction is written into the block link points corresponding to the crowd-funding platforms; through a mechanism of data synchronization between the block chain nodes corresponding to the crowd-funding platforms, asset subscription registration information corresponding to each asset transaction in the crowd-funding process is stored in the block chain node corresponding to each crowd-funding platform. Whether crowd funding is successful or not, the complete record of the crowd funding process participated by the investor can be obtained through the asset registration subscription information stored in the block chain node, and the credibility of the crowd funding process can be improved because the data in the block chain system cannot be tampered.
For form two:
step 104 comprises: receiving crowd funding result registration information sent by a first crowd funding platform and at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation of the investor in underwriting assets after the crowd funding succeeds;
step 105 comprises: and writing the received crowd funding result registration information into a block chain node corresponding to the crowd funding platform which sends the information.
In particular, the amount of the solvent to be used,
the method comprises the steps that a first crowd-funding platform and at least one second crowd-funding platform display crowd-funding projects and corresponding asset conditions on the respective crowd-funding platforms according to crowd-funding information stored in block chain nodes corresponding to the first crowd-funding platform and the second crowd-funding platform, and an investor purchases corresponding assets through the first crowd-funding platform or the second crowd-funding platform; the method comprises the steps that a first crowd-funding platform and at least one second crowd-funding platform judge whether a crowd-funding target is reached within preset crowd-funding time, if the crowd-funding target is reached within the crowd-funding time, the crowd-funding is judged to be successful, and otherwise, the crowd-funding is judged to be failed;
for each crowd funding platform, if crowd funding is judged to fail, refunding funds of an investor purchasing crowd funding assets from the crowd funding platform to form corresponding investor refund information, and writing the formed investor refund information into block chain link points corresponding to the crowd funding platform; and if the crowd funding is judged to be successful, forming investor asset information comprising any one or more of project party ID, project party password, asset registration ID, investor ID, transaction quantity, asset validity period and electronic contract according to asset information of an investor purchasing crowd funding assets from the crowd funding platform, and writing the formed investor asset information into a block chain node corresponding to the crowd funding platform.
Compared with the crowd funding transaction information in the first form, the crowd funding transaction information in the second form does not include asset underwriting registration information, the first crowd funding platform and each second crowd funding platform still form asset underwriting registration information in the process of sales crowd funding, but the formed asset underwriting registration information is not written into the block chain nodes, and crowd funding result registration information including sponsor refund information or sponsor asset information is written into the block chain nodes only according to crowd funding results.
The asset subscription registration information is formed in the crowd funding process, so that the crowd funding result cannot be determined when the asset subscription registration information is formed, if the asset subscription registration information is written into a block chain node, when crowd funding fails, the asset subscription registration information written into the block chain node loses the existing significance, but the meaningless asset subscription registration information cannot be deleted from the block chain node due to the characteristic that the block chain node cannot be tampered, so that the waste of storage space of the block chain node can be reduced without writing the asset subscription registration information into the block chain node; in addition, crowd funding transaction information corresponding to the second form can meet the requirements of specific users, and the applicability of the crowd funding method based on the block chain is improved.
The crowd funding method based on the block chain according to the embodiment of the present invention is further described below with respect to the first form (crowd funded transaction information including asset subscription registration information and crowd funded result registration information) and the second form (crowd funded transaction information including crowd funded result registration information).
With respect to the aforementioned form one (crowd funded transaction information including asset underwriting registration information and crowd funding result registration information), as shown in fig. 2, an embodiment of the present invention provides a crowd funding method based on a block chain, which may include the following steps:
step 201: and receiving crowd funding information issued by the project party through the first crowd funding platform.
In one embodiment of the invention, a project party publishes crowd funding information through a selected first crowd funding platform, wherein the crowd funding information comprises crowd funding project information and asset information corresponding to crowd funding projects; and after receiving the crowd funding information issued by the project party, the first crowd funding platform sends the received crowd funding information. And after the crowd funding information is sent, writing the received crowd funding information into a block chain node corresponding to the first crowd funding platform.
Step 202: and encrypting the crowd funding information through a preset public key, and writing the decrypted crowd funding information into a block chain node corresponding to the first crowd funding platform.
In an embodiment of the invention, after crowd funding information sent by a first crowd funding platform is received, the crowd funding information is encrypted through a preset public key, and the encrypted crowd funding information is written into a block chain node corresponding to the first crowd funding platform.
Step 203: and synchronizing data in the block chain node corresponding to the first crowd-funding platform to the block chain node corresponding to the at least one second crowd-funding platform.
In an embodiment of the invention, after encrypted crowd-funding information is written into a block chain node corresponding to a first crowd-funding platform, data in the block chain node corresponding to the first crowd-funding platform is synchronized into block chain nodes corresponding to second crowd-funding platforms, and after synchronization is completed, the encrypted crowd-funding information is stored in the block chain nodes corresponding to the first crowd-funding platform and the second crowd-funding platforms.
For example, 3 second crowd-funding platforms are included in the total, the second crowd-funding platform 1, the second crowd-funding platform 2 and the second crowd-funding platform 3 are respectively provided, after crowd-funding information subjected to encryption processing is written into block chain nodes corresponding to the first crowd-funding platform, data in the block chain nodes corresponding to the first crowd-funding platform are respectively synchronized into the block chain nodes corresponding to the second crowd-funding platform 1, the second crowd-funding platform 2 and the second crowd-funding platform 3.
Step 204: and sending a private key corresponding to the preset public key to one or more of the at least one second crowd-funding platform.
In one embodiment of the invention, after the crowd funding information subjected to encryption processing is synchronized to the block chain nodes corresponding to the second crowd funding platforms, a private key corresponding to a preset public key is sent to one or more of the second crowd funding platforms according to the requirement of a project party or according to the cooperation relationship with the first crowd funding platform.
For example, a private key corresponding to the public key is sent to the second crowd-funding platform 1 and the second crowd-funding platform 2.
Step 205: and selling crowd-funded assets through the first crowd-funding platform and the second crowd-funding platform which receives the private key to form asset subscription registration information.
In one embodiment of the invention, the first crowd-funding platform and the second crowd-funding platform which receives the private key can decrypt the crowd-funding information in an encrypted state through the private key, display crowd-funding items on the respective crowd-funding platforms according to the decrypted crowd-funding information, and sell crowd-funding assets. Aiming at each crowd funding platform participating in crowd funding, each crowd funding transaction is locked by funds paid by an investor, and one piece of asset subscription registration information is formed.
For example, the investor 1 purchases crowd funded assets through a first crowd funding platform, funds of the investor 1 for purchasing the assets are locked, and one asset subscription registration information 1 corresponding to the transaction is formed; the investor 2 purchases crowd funded assets through the second crowd funding voucher 1, and the assets purchased by the investor 2 are locked to form asset subscription registration information 2 corresponding to the transaction.
Step 206: and receiving asset subscription registration information, writing the asset subscription registration information into block chain link points corresponding to the crowd-funding platform which sends the information, and synchronizing data in the block chain nodes into block chain nodes corresponding to other crowd-funding platforms.
In one embodiment of the invention, the asset subscription registration information sent by the first crowd-funding platform and each second crowd-funding platform is received, the asset subscription registration information is written into the block link points corresponding to the crowd-funding platforms sending the information, and the data in the block link nodes corresponding to the crowd-funding platforms are synchronized into the block link nodes corresponding to other crowd-funding platforms.
For example, after receiving the asset subscription registration information 1 sent by the first crowd-funding platform, writing the asset subscription registration information 1 into the block link point corresponding to the first crowd-funding platform; and data in the block chain nodes corresponding to the first crowd-funding platform are respectively synchronized to the block chain nodes corresponding to the second crowd-funding platform 1, the second crowd-funding platform 2 and the second crowd-funding platform 3. After receiving the asset subscription registration information 2 sent by the second crowd-funding platform 1, writing the asset subscription registration information 2 into block chain nodes corresponding to the second crowd-funding platform 1, and synchronizing data in the block chain nodes corresponding to the second crowd-funding platform 1 into the block chain nodes corresponding to the first crowd-funding platform, the second crowd-funding platform 2 and the second crowd-funding platform 3 respectively.
Step 207: and judging whether crowd funding is successful or not through the crowd funding platform, if so, executing step 208, and otherwise, executing step 209.
In an embodiment of the invention, the first crowd-funding platform and each second crowd-funding platform judge whether the crowd-funding target is reached within a preset crowd-funding time, if so, judge that the crowd-funding is successful, and correspondingly execute step 208; if not, the crowd funding is determined to be a failure and step 209 is performed accordingly.
Step 208: and receiving asset information of the investor formed by the crowd funding platform, writing the asset information of the investor into the block chain node corresponding to the crowd funding platform, synchronizing data in the block chain node into other block chain nodes, and finishing the current flow.
In one embodiment of the invention, after the crowd-funding platform for each crowd-funding platform participating in crowd-funding is judged to be successful, the asset information of the investor purchasing the crowd-funding asset from the crowd-funding platform is formed according to the asset information of the investor, wherein the asset information comprises any one or more of project party ID, project party password, asset registration ID, investor ID, transaction quantity, asset validity period and electronic contract, the formed investor asset information is written into the block link point corresponding to the crowd-funding platform, and data in the block link node is synchronized into the block link nodes corresponding to other crowd-funding platforms participating in crowd-funding.
Step 209: and receiving refund information of the supplier formed by the crowd funding platform, writing the refund information of the supplier into the block chain link points corresponding to the crowd funding platform, and synchronizing data in the block chain nodes into other block chain nodes.
In one embodiment of the invention, for each crowd-funding platform participating in crowd-funding, after judging that crowd-funding is successful, funds of an investor purchasing crowd-funding assets from the crowd-funding platform are returned, corresponding investor refund information is formed, the formed investor refund information is written into a block link point corresponding to the crowd-funding platform, and data in the block link node is synchronized into block link nodes corresponding to other crowd-funding platforms participating in crowd-funding.
For the second form (crowd funding transaction information including crowd funding result registration information), an embodiment of the present invention provides a block chain-based crowd funding method, which does not perform step 206 shown in fig. 2, in comparison with the block chain-based crowd funding method shown in fig. 2, that is, the asset subscription registration information generated in the crowd funding process is not written into the block chain nodes.
With respect to the foregoing embodiment shown in fig. 1, step 201 in the embodiment shown in fig. 2 is an optional implementation manner of step 101, step 202 is an optional implementation manner of step 102, step 203 is an optional implementation manner of step 103, and steps 205 to 209 are an implementable manner of step 104 and step 105.
As shown in fig. 3 and 4, an embodiment of the present invention provides a crowd funding device based on a block chain. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. From a hardware level, as shown in fig. 3, a hardware structure diagram of a device in which a crowd-sourcing equipment based on a block chain according to an embodiment of the present invention is located is provided, where in addition to the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 3, the device in the embodiment may also include other hardware, such as a forwarding chip responsible for processing a packet. Taking a software implementation as an example, as shown in fig. 4, as a logical apparatus, the apparatus is formed by reading a corresponding computer program instruction in a non-volatile memory into a memory by a CPU of a device in which the apparatus is located and running the computer program instruction. The crowd funding device based on the block chain provided by the embodiment comprises: a receiving unit 401, a storage unit 402, and a synchronization unit 403;
the receiving unit 401 is configured to receive crowd funding information issued by a project party through a first crowd funding platform, and receive crowd funding transaction information sent by the first crowd funding platform and at least one second crowd funding platform;
the storage unit 402 is used for writing the crowd-funding information received by the receiving unit 401 into a block link point corresponding to a first crowd-funding platform in a block chain system, and writing the crowd-funding transaction information received by the receiving unit 401 into a block link point corresponding to a crowd-funding platform which sends the information;
the synchronizing unit 403 is configured to, after the crowd funding information and the crowd funding transaction information are written into the corresponding block link points in the storage unit 402, synchronize data in the block link nodes, in which the new information is written, into each of other block link nodes corresponding to the first crowd funding platform and the at least one second crowd funding platform in the block link system.
It can be seen that the receiving unit 401 performs step 101 and step 104 in the above-mentioned method embodiment, the storage unit 402 performs step 102 in the above-mentioned method embodiment, the synchronization unit 403 performs step 103 in the above-mentioned method embodiment, and the storage unit 402 and the synchronization unit 403 collectively perform step 105 in the above-mentioned method embodiment.
In an embodiment of the present invention, the crowd-funding device based on the block chain further includes: a transmitting unit;
the storage unit 402 is used for encrypting the crowd funding information through a preset public key and writing the encrypted crowd funding information into a block link point corresponding to the first crowd funding platform;
and the sending unit is used for sending the private key corresponding to the public key to one or more of the at least one second crowd-funding platform so that the second crowd-funding platform receiving the private key can decrypt the crowd-funding data recorded in the block chain link points corresponding to the second crowd-funding platform.
It can be seen that the storage unit 402 performs step 202 in the above-described method embodiment, and the sending unit performs step 204 in the above-described method embodiment.
In one embodiment of the present invention, the substrate is,
the receiving unit 401 is configured to receive asset underwriting registration information sent by a first crowd funding platform and at least one second crowd funding platform, where the asset underwriting registration information is formed by the first crowd funding platform and the at least one second crowd funding platform according to an asset underwriting process of an investor, and the asset underwriting process is performed by the investor according to crowd funding information displayed by the first crowd funding platform and the at least one second crowd funding platform; receiving crowd funding result registration information sent by a first crowd funding platform and at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation of the investor in underwriting assets after the crowd funding succeeds;
a storage unit 402, configured to write the asset subscription registration information and the crowd funding result registration information received by the receiving unit 401 into a block chain node corresponding to the crowd funding platform that sends the information.
In one embodiment of the present invention, the substrate is,
the system comprises a receiving unit 401, a first crowd funding platform and at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and comprises investor refund information for refunding money from an investor after crowd funding fails or investor asset information for representing the situation that the investor purchases assets after crowd funding succeeds;
the storage unit 402 is configured to write the crowd funding result registration information received by the receiving unit 401 into a block chain node corresponding to the crowd funding platform that sends the information.
Because the information interaction, execution process, and other contents between the units in the device are based on the same concept as the method embodiment of the present invention, specific contents may refer to the description in the method embodiment of the present invention, and are not described herein again.
As shown in fig. 5, an embodiment of the present invention provides a crowd funding system based on a block chain, including: a first crowd-funding platform 501, at least one second crowd-funding platform 502, and any crowd-funding device 503 based on a block chain provided by the embodiment of the present invention;
the first crowd-funding platform 501 is used for receiving crowd-funding information issued by a project party and sending the crowd-funding information to a crowd-funding device 503 based on a block chain; the crowd funding transaction information of crowd funding corresponding to the crowd funding information on the crowd funding platform is obtained, and the obtained crowd funding transaction information is sent to a crowd funding device 503 based on a block chain;
each second crowd-funding platform 502 is configured to obtain crowd-funding transaction information of crowd-funding corresponding to crowd-funding information on the crowd-funding platform, and send the obtained crowd-funding transaction information to the crowd-funding device 503 based on the block chain.
Embodiments of the present invention also provide a computer storage medium storing instructions for causing a machine to perform a crowd-funding method based on blockchains as described herein. Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion unit connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion unit to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
The invention provides various embodiments, which at least have the following beneficial effects:
1. in the crowd funding method, device and system based on the block chain, provided by the embodiment of the invention, after a project party issues crowd funding information through a first crowd funding platform, the crowd funding information is written into block link points corresponding to the first crowd funding platform in the block chain system, and data in the block link points corresponding to the first crowd funding platform are synchronized into the block link points corresponding to at least one second crowd funding platform in the block chain system; and respectively carrying out crowd funding transaction by the first crowd funding platform and the at least one second crowd funding platform according to crowd funding information in the respective corresponding block chain node, and respectively writing the crowd funding transaction information into the respective corresponding block chain node. Because the block chain link points corresponding to the crowd-funding platforms can synchronize data with each other, the data stored in the block chain nodes corresponding to the crowd-funding platforms are the same, namely the crowd-funding platforms share the same database; the block chain system has the characteristics of non-tampering and traceability, so that the crowd funding platforms are restrained from being incapable of randomly changing crowd funding data, and the credibility of the data in the block chain system is ensured; therefore, each crowd-funding platform can carry out crowd-funding through the same mutually-trusted block chain system, and crowd-funding of the cross-crowd-funding platform is achieved.
2. In the crowd funding method, device and system based on the block chain, detailed information of a crowd funding project issued by a project party can be determined through crowd funding project information, assets issued by the project party and commitments made to investors can be determined through asset information, the crowd funding project information and the asset information are written into the block chain nodes, the crowd funding project information and the asset information cannot be tampered, the behavior of issuing the crowd funding information by the project party is deterred, and authenticity of the crowd funding information issued by the project party is guaranteed.
3. In the crowd funding method, device and system based on the block chain, crowd funding information written in the block chain nodes is encrypted through a preset public key, then the corresponding private key is sent to a crowd funding platform participating in crowd funding, the crowd funding platform obtaining the decryption private key can display and sell crowd funding products, the crowd funding platform not obtaining the decryption private key cannot display and sell crowd funding products, therefore, the crowd funding platform with display and sale permission can be selected according to requirements, and the applicability of the crowd funding method, device and system based on the block chain is improved.
4. In the crowd funding method, device and system based on the block chain, asset subscription registration information for recording the crowd funding process can be written into the block chain nodes, complete records of participation of the investor in the crowd funding process can be obtained through the asset subscription registration information stored in the block chain nodes, and the credibility of the crowd funding process can be improved because data in the block chain nodes cannot be tampered.
5. In the block chain-based crowd funding method, device and system provided by the embodiment of the invention, only crowd funding result registration information reflecting crowd funding results can be written into the block chain nodes without writing the asset subscription registration information recording the crowd funding process into the block chain nodes, so that the situation that the meaningless asset subscription registration information wastes the block link point storage space due to crowd funding failure after the asset subscription registration information is written into the block chain nodes can be avoided, and the utilization rate of the block link point storage space can be improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other similar elements in a process, method, article, or apparatus that comprises the element.
Those of ordinary skill in the art will understand that: all or part of the steps for realizing the method embodiments can be completed by hardware related to program instructions, the program can be stored in a computer readable storage medium, and the program executes the steps comprising the method embodiments when executed; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. A crowd funding method based on a block chain is characterized in that different block chain nodes corresponding to different crowd funding platforms are arranged in a block chain system; the method comprises the following steps:
receiving crowd funding information issued by a project party through a first crowd funding platform;
writing the crowd-funding information into a block link point in the block chain system corresponding to the first crowd-funding platform;
respectively synchronizing data in the block chain nodes corresponding to the first crowd-funding platform into each block chain node corresponding to at least one second crowd-funding platform in the block chain system;
receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform;
writing the crowd-funding transaction information into block chain link points corresponding to crowd-funding platforms which send the information, and synchronizing data in the block chain nodes into the block chain link points corresponding to other crowd-funding platforms in the first crowd-funding platform and the at least one second crowd-funding platform; wherein the content of the first and second substances,
the writing of the crowd-funding information into a block link point in a block chain system corresponding to the first crowd-funding platform comprises:
encrypting the crowd funding information through a preset public key, and writing the encrypted crowd funding information into block link points corresponding to the first crowd funding platform;
the synchronizing data in the block chain nodes corresponding to the first crowd-funding platform to each block chain node corresponding to at least one second crowd-funding platform in the block chain system respectively includes:
respectively synchronizing data in block chain nodes corresponding to the first crowd-funding platform into each block chain node corresponding to a first number of second crowd-funding platforms in the block chain system;
after the synchronizing data in the block chain nodes corresponding to the first crowd-funded platform into the block chain nodes corresponding to the first number of second crowd-funded platforms in the block chain system, further includes:
sending the private keys corresponding to the public keys to a second crowd-funding platform of a second number, so that the second crowd-funding platform of the second number receiving the private keys can decrypt the crowd-funding data recorded in the block link points corresponding to the second crowd-funding platform;
wherein the first number is greater than the second number.
2. The method of claim 1,
the crowd funding information includes: crowd funding project information and asset information corresponding to the crowd funding project information, wherein,
the asset information includes: any one or more of equity information, debt information, profit information, commonweal information, product information, and service information.
3. The method according to any one of claims 1 to 2,
the receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform includes:
receiving asset underwriting registration information sent by the first crowd-funding platform and the at least one second crowd-funding platform, wherein the asset underwriting registration information is formed by the first crowd-funding platform or the second crowd-funding platform according to an asset underwriting process of an investor, and the asset underwriting process is performed by the investor according to the crowd-funding information displayed by the first crowd-funding platform and the at least one second crowd-funding platform;
receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor purchases assets after crowd funding succeeds;
the writing of the crowd funding transaction information into the block link points corresponding to the crowd funding platform sending the information comprises the following steps:
and writing the asset subscription registration information and the crowd funding result registration information into a block chain node corresponding to a crowd funding platform which sends the information.
4. The method according to any one of claims 1 to 2,
the receiving crowd funding transaction information sent by the first crowd funding platform and the at least one second crowd funding platform includes:
receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor purchases assets after crowd funding succeeds;
the writing of the crowd funding transaction information into the block link points corresponding to the crowd funding platform sending the information comprises the following steps:
and writing the crowd funding result registration information into a block chain node corresponding to a crowd funding platform which sends the information.
5. A crowd funding device based on a block chain is characterized by comprising: the device comprises a receiving unit, a storage unit and a synchronization unit;
the receiving unit is used for receiving crowd-funding information issued by a project party through a first crowd-funding platform and receiving crowd-funding transaction information sent by the first crowd-funding platform and at least one second crowd-funding platform;
the storage unit is used for writing the crowd-funding information received by the receiving unit into a block link point corresponding to the first crowd-funding platform in a block chain system, and writing the crowd-funding transaction information received by the receiving unit into a block link point corresponding to a crowd-funding platform which sends the crowd-funding transaction information; the block chain system comprises different block chain nodes corresponding to different crowd funding platforms;
the synchronization unit is used for synchronizing data in the block chain nodes written with new information to other block chain nodes corresponding to a first number of second crowd-funding platforms in the block chain system after the crowd-funding information and the crowd-funding transaction information are written into the corresponding block chain link points by the storage unit;
further comprising: a transmitting unit;
the storage unit is used for encrypting the crowd funding information through a preset public key and writing the crowd funding information after encryption into block link points corresponding to the first crowd funding platform;
the sending unit is used for sending the private key corresponding to the public key to a second crowd-funding platform with a second quantity so that the second crowd-funding platform with the second quantity receiving the private key can decrypt the crowd-funding data recorded in the block link points corresponding to the second crowd-funding platform;
wherein the first number is greater than the second number.
6. The apparatus of claim 5,
the receiving unit is used for receiving asset subscription registration information sent by the first crowd-funding platform and the at least one second crowd-funding platform, wherein the asset subscription registration information is formed by the first crowd-funding platform and the at least one second crowd-funding platform according to an asset subscription process of an investor, and the asset subscription process is performed by the investor according to the crowd-funding information displayed by the first crowd-funding platform and the at least one second crowd-funding platform; and receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information refunded to an investor after crowd funding fails or investor asset information representing the situation that the investor underwrites assets after crowd funding succeeds;
the storage unit is used for writing the asset subscription registration information and the crowd funding result registration information received by the receiving unit into a block chain node corresponding to a crowd funding platform which sends the information.
7. The apparatus of claim 5,
the receiving unit is used for receiving crowd funding result registration information sent by the first crowd funding platform and the at least one second crowd funding platform, wherein the crowd funding result registration information is formed by the first crowd funding platform or the second crowd funding platform according to crowd funding results, and the crowd funding result registration information comprises investor refund information for refunding money to an investor after crowd funding fails or investor asset information representing the situation of underwriting assets by the investor after crowd funding succeeds;
the storage unit is used for writing the crowd funding result registration information received by the receiving unit into a block chain node corresponding to a crowd funding platform which sends the information.
8. A crowd funding system based on a blockchain, comprising: a first crowd-funding platform, at least one second crowd-funding platform, and the crowd-funding block chain-based device of any of claims 5-7;
the first crowd-funding platform is used for receiving crowd-funding information issued by a project party and sending the crowd-funding information to the crowd-funding device based on the block chain; the crowd funding transaction information of crowd funding corresponding to the crowd funding information on the crowd funding platform is obtained, and the obtained crowd funding transaction information is sent to the crowd funding device based on the block chain;
each crowd-funding platform is used for obtaining crowd-funding transaction information of crowd-funding corresponding to the crowd-funding information on the crowd-funding platform, and the obtained crowd-funding transaction information is sent to the crowd-funding device based on the block chain.
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