CN113836227B

CN113836227B - Asset purchasing method and device based on blockchain and electronic equipment

Info

Publication number: CN113836227B
Application number: CN202111086561.4A
Authority: CN
Inventors: 周徽; 祁鹏涛; 陆旭明; 陈锐发
Original assignee: Advanced New Technologies Co Ltd
Current assignee: Advanced New Technologies Co Ltd
Priority date: 2019-09-05
Filing date: 2019-09-05
Publication date: 2024-04-19
Anticipated expiration: 2039-09-05
Also published as: CN110765200A; CN113836227A; WO2021042809A1; CN110765200B

Abstract

Asset buying method and device based on blockchain, and electronic equipment, comprising: receiving a target transaction triggered when a cash flow index of an investment account of an asset management party of the securitized asset meets a preset condition; wherein the securitized asset is an asset issued supporting a pool of base assets as value on a blockchain; the base asset pool is an asset pool created based on the blockchain-authenticated base asset; in response to a target transaction, invoking base asset purchasing logic in an intelligent contract deployed on a blockchain, adding target base assets to be purchased, which are screened out of base assets with blockchain certificates, to the base asset pool, and freezing asset purchasing funds corresponding to the target base assets in an investment account of an asset manager through a banking system; and updating the equity person of the target basic asset as the asset management party when the funds freezing record for the purchased funds issued to the blockchain by the banking system is acquired.

Description

Asset purchasing method and device based on blockchain and electronic equipment

Technical Field

One or more embodiments of the present disclosure relate to the field of blockchain technology, and in particular, to a blockchain-based asset purchasing method, device and electronic equipment.

Background

Blockchain technology, also known as distributed ledger technology, is an emerging technology that is commonly engaged in "accounting" by several computing devices, together maintaining a complete distributed database. The blockchain technology has the characteristics of decentralization, disclosure transparency, capability of participating in database recording by each computing device and capability of rapidly performing data synchronization among the computing devices, so that the blockchain technology is widely applied in a plurality of fields.

Disclosure of Invention

The specification proposes a blockchain-based asset procurement method applied to a node device of a blockchain, the method comprising:

Receiving a target transaction triggered when a cash flow index of an investment account of an asset management party of the securitized asset meets a preset condition; wherein the securitized asset is an asset issued supporting a pool of base assets as value on the blockchain; the base asset pool is an asset pool created based on the blockchain-certified base asset;

invoking base asset purchasing logic in an intelligent contract deployed on the blockchain in response to the target transaction, adding target base assets to be purchased, which are screened from the base assets with blockchain certification, to the base asset pool, and freezing asset purchasing funds corresponding to the target base assets in an investment account of the asset manager through a banking system;

Updating the equity person of the target base asset to the asset manager upon acquisition of a frozen record of funds for the purchased funds issued by the banking system to the blockchain.

Optionally, the cash flow indicator is a cash flow balance;

The preset condition is that the cash flow balance reaches a preset threshold value.

Optionally, the adding the target base asset to be purchased screened from the blockchain-certified base assets to the base asset pool includes:

Acquiring an asset screening rule set by an asset management side of the blockchain certificate;

and screening out target base assets to be purchased, which accord with the asset screening rule, from the base assets of the blockchain certification based on the acquired asset screening rule, and adding the screened target base assets into the base asset pool.

Optionally, the target transaction further includes an asset declaration fund of an asset manager;

screening target base assets to be purchased which meet the asset screening rule from the base assets with the blockchain certification, wherein the target base assets to be purchased comprise:

And screening out the basic assets conforming to the asset screening rule from the basic assets with the blockchain certification, wherein the asset value is matched with the value of the asset purchasing funds.

Optionally, the freezing, by a banking system, the purchased funds corresponding to the target base asset in the investment account of the asset management party includes:

and generating a freezing event of the purchased funds corresponding to the target basic assets in the investment account of the asset management party, so that when the bank system monitors the freezing event, the purchased funds corresponding to the target basic assets in the investment account of the asset management party are frozen, and a fund freezing record is issued to the blockchain for certification.

Optionally, updating the equity person of the target base asset to the asset manager includes:

And further calling asset validation logic in the intelligent contract, initiating validation processing for the target base asset, and updating the equity persons of the target base asset to the asset manager after the asset manager validates the target base asset.

Optionally, the method further comprises:

And generating an right-confirming completion event that the asset management side has confirmed the target base asset, so that when the bank system monitors the right-confirming completion event, frozen purchased funds corresponding to the target base asset are transferred from an investment account of the asset management side to an investment account of an original equity person of the target base asset.

Optionally, the investment account is a escrow account opened at a escrow bank; the securitized assets are bonds or funds; the base asset is a base liability asset.

The present specification proposes a blockchain-based asset procurement apparatus, the apparatus being applied to a node device of the blockchain, the apparatus comprising:

The receiving module is used for receiving target transactions triggered when cash flow indexes of investment accounts of asset management parties of securitized assets meet preset conditions; wherein the securitized asset is an asset issued supporting a pool of base assets as value on the blockchain; the base asset pool is an asset pool created based on the blockchain-certified base asset;

The calling module is used for responding to the target transaction, calling basic asset purchasing logic in an intelligent contract deployed on the blockchain, adding target basic assets to be purchased, which are screened out of the basic assets with the blockchain storage, into the basic asset pool, and freezing the asset purchasing funds corresponding to the target basic assets in an investment account of the asset manager through a banking system;

And the updating module is used for updating the equity person of the target basic asset to the asset management party when acquiring the fund freezing record aiming at the purchased funds and issued to the blockchain by the banking system.

Optionally, the cash flow indicator is a cash flow balance;

Optionally, the calling module obtains an asset screening rule set by an asset manager of the blockchain storage certificate; and screening out target base assets to be purchased, which accord with the asset screening rule, from the base assets of the blockchain certification based on the acquired asset screening rule, and adding the screened target base assets into the base asset pool.

and the calling module screens out the basic assets which meet the asset screening rule and have asset values matched with the value of the asset buying funds from the basic assets of the blockchain certification.

Optionally, the calling module generates a freeze event of the purchased funds corresponding to the target base asset in the investment account of the asset management party, so that when the bank system monitors the freeze event, the purchased funds corresponding to the target base asset in the investment account of the asset management party are frozen, and the fund freeze record is issued to the blockchain for certification.

Optionally, the updating module further invokes an asset validation logic in the intelligent contract, initiates validation processing for the target base asset, and updates a equity person of the target base asset to the asset manager after the asset manager validates the target base asset.

Optionally, the device further includes a generating module, configured to generate an acknowledgement completion event that the asset manager has acknowledged the target base asset, so that when the banking system monitors the acknowledgement completion event, the frozen purchase-applied funds corresponding to the target base asset are transferred from the investment account of the asset manager to the investment account of the original equity person of the target base asset.

In the technical scheme of the specification, when detecting that cash flow indexes in an investment account of an asset management side meet preset conditions, an asset management side platform can send target transactions to a blockchain to trigger blockchain link point equipment to call intelligent contracts, target basic assets to be purchased are screened out from basic assets stored in the blockchain, the purchasing funds of the target basic assets are frozen through a banking system, equity persons of the target basic assets are changed after the target basic assets are frozen, and after the asset management side confirms the target basic assets, the banking system is instructed to transfer the asset purchasing funds of the asset management side from the asset management side investment account to an original equity person investment account of the target basic assets, so that the automatic purchasing of the basic assets is continuously carried out by the asset management side through the way of calling the intelligent contracts of the blockchain by utilizing cash flows in the investment accounts.

Drawings

FIG. 1 is a schematic diagram of one type of creating a smart contract as shown in an exemplary embodiment of the present description;

FIG. 2 is a schematic diagram of a call to a smart contract as shown in an exemplary embodiment of the present description;

FIG. 3 is a schematic diagram of creating a smart contract and invoking a smart contract, as shown in an exemplary embodiment of the present description;

FIG. 4 is a schematic diagram of a blockchain-based asset procurement system shown in an exemplary embodiment of the description;

FIG. 5 is a flowchart illustrating a blockchain-based asset procurement method according to an exemplary embodiment of the description;

Fig. 6 is a schematic structural view of an electronic device according to an exemplary embodiment of the present disclosure;

FIG. 7 is a block chain based asset procurement device shown in an exemplary embodiment of the description.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present description as detailed in the accompanying claims.

The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in this specification to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present description. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.

Blockchains are generally divided into three types: public chain (Public Blockchain), private chain (Private Blockchain) and federated chain (Consortium Blockchain). In addition, there may be combinations of the above types, such as private chain+federation chain, federation chain+public chain, and the like.

Among them, the highest degree of decentralization is the public chain. The public chain is represented by bitcoin, ethernet, and participants joining the public chain (also referred to as nodes in the blockchain) can read data records on the chain, participate in transactions, and compete for accounting rights for new blocks, etc. Moreover, each node can freely join or leave the network and perform relevant operations.

The private chain is the opposite, the write rights of the network are controlled by an organization or organization, and the data read rights are specified by the organization. In short, the private chain may be a weakly centralized system with strict restrictions on the nodes and a small number of nodes. This type of blockchain is more suitable for use within a particular organization.

The alliance chain is a block chain between public and private chains, and can realize 'partial decentralization'. Each node in the federation chain typically has an entity organization or organization corresponding thereto; nodes join the network by authorization and form a benefit-related federation, which collectively maintains blockchain operation.

Based on the basic characteristics of a blockchain, a blockchain is typically made up of several blocks. The time stamps corresponding to the creation time of the block are recorded in the blocks respectively, and all the blocks form a time-ordered data chain strictly according to the time stamps recorded in the blocks.

For real data generated in the physical world, the real data can be constructed into a standard transaction (transaction) format supported by a blockchain, then the transaction is issued to the blockchain, the node equipment in the blockchain performs consensus processing on the received transaction, and after the consensus is achieved, the node equipment serving as an accounting node in the blockchain packages the transaction into a block, and the persistence is performed in the blockchain.

Among other things, the consensus algorithm supported in the blockchain may include:

A first type of consensus algorithm, namely a consensus algorithm that node equipment needs to contend for the accounting rights of the accounting period of each round; for example, consensus algorithms such as Proof of Work (POW), proof of equity (POS), proof of commission (DELEGATED PROOF OF STAKE, DPOS);

a second type of consensus algorithm, namely a consensus algorithm which pre-elects accounting nodes (without competing for accounting rights) for each round of accounting period; for example, a consensus algorithm such as Bayesian fault tolerance (PRACTICAL BYZANTINE FAULT TOLERANCE, PBFT) is used.

In blockchain networks employing a first type of consensus algorithm, node devices competing for accounting rights may perform a transaction after receiving the transaction. One of the node devices competing for the accounting rights may win out of the process of competing for the accounting rights in this round, becoming an accounting node. The accounting node may package the received transaction with other transactions to generate the latest chunk and send the generated latest chunk or chunks of the latest chunk to other node devices for consensus.

In blockchain networks employing a second type of consensus algorithm, node devices with accounting rights are already well-established prior to this round of accounting. Thus, after receiving a transaction, the node device may send the transaction to the billing node if it is not itself the billing node for the current round. For the billing node of the present round, the transaction may be performed during or before packaging the transaction with other transactions to generate the latest block. After generating the latest block, the accounting node may send the latest block or the block head of the latest block to other node devices for consensus.

As described above, regardless of which consensus algorithm is used by the blockchain as shown above, the accounting node of the round may package the received transaction to generate the latest chunk and send the generated latest chunk or chunks of the latest chunk to other node devices for consensus verification. If the other node equipment receives the latest block or the block head of the latest block, and is verified to have no problem, the latest block can be added to the end of the original blockchain, so that the accounting process of the blockchain is completed. Other nodes may also execute transactions contained in the block during the verification of the new block or block header from the accounting node.

In practical applications, whether public, private or federated, it is possible to provide Smart contract (Smart contract) functionality. Intelligent contracts on a blockchain are contracts on a blockchain that can be executed by a transaction trigger. The smart contracts may be defined in the form of codes.

Taking the ethernet as an example, a user is supported to create and invoke some complex logic in the ethernet network. The ethernet is used as a programmable blockchain, and the core of the ethernet is an Ethernet Virtual Machine (EVM), and each ethernet node can run the EVM. EVM is a graphics-based virtual machine through which various complex logic can be implemented. The user's issuing and invoking of the smart contract in the ethernet is running on the EVM. In fact, the EVM runs directly on virtual machine code (virtual machine bytecode, hereinafter "bytecode"), so the smart contract deployed on the blockchain may be bytecode.

As shown in fig. 1, bob sends a Transaction (Transaction) containing information to create a smart contract to the ethernet network, and each node may execute the Transaction in the EVM. In fig. 1, the From field of the transaction is used To record an address of an account initiating creation of an intelligent contract, the contract code stored by the field value of the Data field of the transaction may be a byte code, and the field value of the To field of the transaction is a null account. After agreement is reached between nodes through the consensus mechanism, the intelligent contract is successfully created, and the subsequent user can call the intelligent contract.

After the intelligent contract is created, a contract account corresponding to the intelligent contract appears on the blockchain and has a specific address; for example, "0x68e12cf284 …" in each node in FIG. 1 represents the address of this contract account created; the contract Code (Code) and the account store (Storage) will be saved in the account store of the contract account. The behavior of the smart contract is controlled by the contract code, and the account store of the smart contract maintains the state of the contract. In other words, the smart contract causes a virtual account to be generated on the blockchain that includes the contract code and account store.

The foregoing mentions that the Data field containing the transaction that created the smart contract holds may be the bytecode of the smart contract. Bytecode consists of a series of bytes, each of which can identify an operation. Based on various aspects of development efficiency, readability and the like, a developer can select a high-level language to write intelligent contract codes instead of directly writing byte codes. For example, a high-level language such as Solidity, serpent, LLL language may be employed. For smart contract code written in a high-level language, it may be compiled by a compiler to generate bytecodes that may be deployed onto a blockchain.

Taking Solidity language as an example, the contract code written with it is very similar to classes (classes) in object-oriented programming languages, and multiple members can be declared in a contract, including state variables, functions, function modifiers, events, and so on. The state variable is a value permanently stored in an account store (Storage) field of the smart contract for saving the state of the contract.

Still taking the ethernet as an example, as shown in fig. 2, bob sends a transaction containing the call intelligent contract information to the ethernet network, and each node can execute the transaction in the EVM. The From field of the transaction in fig. 2 is used for recording the address of the account initiating the call of the smart contract, the To field is used for recording the address of the called smart contract, and the Data field of the transaction is used for recording the method and parameters for calling the smart contract. After invoking the smart contract, the account status of the contract account may change. Subsequently, a platform may view the account status of the contract account through the accessed blockchain node (e.g., node 1 in FIG. 2).

The intelligent contract can be independently executed at each node in the blockchain network in a specified mode, all execution records and data are stored on the blockchain, so that when the transaction is executed, transaction credentials which cannot be tampered and cannot be lost are stored on the blockchain.

A schematic diagram of creating a smart contract and invoking a smart contract is shown in fig. 3. To create an intelligent contract in the ethernet, the intelligent contract needs to be written, changed into byte codes, deployed to a blockchain and the like. The intelligent contract is called in the Ethernet, a transaction pointing to the intelligent contract address is initiated, EVM of each node can execute the transaction respectively, and intelligent contract codes are distributed and run in the virtual machine of each node in the Ethernet network.

In the blockchain domain, an important concept is Account (Account); taking an ethernet as an example, the ethernet generally divides accounts into two types, an external account and a contract account; the external account is an account directly controlled by the user, and is also called a user account; the contract account is an account (i.e., smart contract) that is created by the user through an external account and contains a contract code. Of course, for some blockchain projects (such as ant blockchains) derived from the ethernet-based architecture, the account types supported by the blockchains can be further expanded, which is not particularly limited in this specification.

For accounts in a blockchain, the account status of the account is typically maintained by a structure. When a transaction in a block is executed, the status of the account in the blockchain associated with the transaction will typically change.

Taking ethernet as an example, the structure of an account typically includes fields such as Balance, nonce, code, and Storage. Wherein:

a Balance field for maintaining a current account Balance of the account;

a Nonce field for maintaining a number of transactions for the account; the counter is used for guaranteeing that each transaction can be processed only once, and effectively avoiding replay attack;

A Code field for maintaining a contract Code for the account; in practical applications, only the hash value of the contract Code is usually maintained in the Code field; thus, the Code field is also commonly referred to as Codehash field.

A Storage field for maintaining the stored contents of the account (default field value is null); for a contract account, a separate storage space is generally allocated to store the storage content of the contract account; this separate storage space is commonly referred to as the account store for the contract account. The stored content of the contract account is stored in the independent storage space by a data structure which is generally constructed into MPT (Merkle Patricia Trie) trees; among them, the MPT tree constructed based on the stored contents of the contract account is also commonly referred to as Storage tree. Whereas the Storage field typically only maintains the root node of the Storage tree; thus, the Storage field is also commonly referred to as StorageRoot field.

For the external account, the field values of the Code field and the Storage field shown above are null values.

In order to achieve "value transfer" on a blockchain, the traditional blockchain project represented by ethernet typically supports conversion of real world currency into virtual tokens that can circulate on the chain.

In the blockchain field, for some blockchain items (such as ant blockchains) derived from ethernet-based architecture, the function of converting real-world currency into virtual tokens capable of circulating on the chain is often no longer supported; instead, in these blockchain projects, physical assets of some non-monetary attributes in the real world may be converted into virtual assets that can circulate on the blockchain.

The conversion of physical assets of non-monetary attributes in the real world into virtual assets on the blockchain generally refers to the process of "anchoring" the physical assets with the virtual assets on the blockchain, as a support for the value of these virtual assets, to thereby create virtual assets on the blockchain that match the value of the physical assets and that are capable of being circulated between blockchain accounts on the blockchain.

When the method is realized, the account type supported by the blockchain can be expanded, and an asset account (also called an asset object) is expanded on the basis of the account type supported by the blockchain; for example, an asset account can be expanded based on an external account and a contract account supported by the ethernet; the expanded asset account is a virtual asset which can take physical assets with non-monetary attributes in the real world as value supports and can circulate among blockchain accounts.

For users accessing such blockchains, in addition to creating user accounts and intelligent contracts on the blockchain, creating a virtual asset on the blockchain that matches the physical asset value of the real world non-monetary attributes, and circulating on the blockchain;

For example, a user may convert a physical property of a non-monetary attribute, such as a property held, stock, loan contract, ticket, receivables, etc., into a virtual property of value matching to circulate on the blockchain.

In particular, the account state of the asset account can be maintained by one structure. The content contained in the structure of the asset account can be the same as that of the ethernet, and can be designed based on actual requirements;

In one implementation, taking the example that the content included in the structure of the asset account is the same as that of the ethernet, the structure of the asset account may also include fields such as the above-described Balance, nonce, code, storage, and the like.

It should be noted that, in ethernet, the Balance field is generally used to maintain the current account Balance of the account; in contrast, for blockchain projects derived from ethernet-based architectures, because they may not support conversion of real-world currency into virtual tokens capable of circulating on the chain, in such blockchains, the meaning of the Balance field may be extended, not representing the "Balance" of the account, but rather address information for maintaining the asset account corresponding to the "virtual asset" held by the account. In practical application, address information of asset accounts corresponding to multiple "virtual assets" may be maintained in the Balance field.

In this case, the external account, the contract account, and the asset account shown above may all hold the virtual asset by adding address information of the asset account corresponding to the "virtual asset" to be held in the Balance field. I.e., the asset account itself may hold virtual assets in addition to external accounts and contract accounts.

For an asset account, the field value of the Code field may or may not be a null value; and the field value of the Storage field may no longer be a null value; the Storage field may be used to maintain the asset status of the "virtual asset" corresponding to the asset account. The specific manner of maintaining the asset status of the "virtual asset" corresponding to the asset account in the Storage field may be flexibly designed based on the requirement, and will not be described herein.

In blockchain projects derived from an ethernet-based architecture, a user can create a virtual asset on the blockchain that matches the physical asset value of the real-world non-monetary attribute by the implementation shown below:

In one implementation, the transaction types supported by the blockchain may be expanded to expand a transaction for creating a virtual asset; for example, the transaction types supported by the ethernet usually include a general transfer transaction, a transaction for creating a smart contract, and a transaction for calling a smart contract, and then a transaction for creating a virtual asset can be expanded based on the above three types of transactions.

In this case, a user may issue a transaction to the blockchain network for creating a virtual asset through the platform, which is performed by the node device in the blockchain in the local EVM to create the virtual asset for the user. When the node devices agree through the consensus mechanism, the virtual asset is successfully created, an asset account corresponding to the virtual asset appears on the blockchain, and the virtual asset has a specific address.

In another implementation, intelligent contracts for creating virtual assets may also be deployed on the blockchain; the process of deploying the smart contracts for creating the virtual assets is not described in detail.

In this case, a user may issue a transaction to the blockchain network for invoking the smart contract via the platform, the transaction being performed by a node device in the blockchain in the local EVM, and running the smart contract-related contract code in the EVM to create a virtual asset for the user. When the node devices agree through the consensus mechanism, the virtual asset is successfully created, an asset account corresponding to the virtual asset appears on the blockchain, and the virtual asset has a specific address.

Of course, for some blockchain projects derived from ethernet-based architecture, if they also support the function of converting real-world currency into virtual tokens capable of circulating on the chain, then some physical assets of non-monetary nature in the real world can still be converted into the form of virtual tokens capable of circulating on the blockchain, and will not be repeated in this specification.

With the continuous enrichment of the business scenes of the blockchain, more and more blockchain items begin to introduce some business scenes which are irrelevant to the value transfer, besides the business which is relevant to the value transfer, such as transfer; for example, the blockchain interfaces with financial institutions and the like, and business scenarios such as asset securitization are completed on the blockchain.

Securitization of assets refers to the process of issuing Asset support securities (Asset-Backed Securities, ABS) based on the credit enhancement by a structured design with cash flows generated in the future of the underlying Asset as a value support.

The basic flow of securitization of assets includes: the original equity of the base asset sells the base asset to an SPV (Special Purpose Vehicle, special-purpose agency), or the SPV actively purchases the base asset. The SPV then aggregates the purchased base assets into a base asset pool, pays the value-bearing securities of the issuing on the financial market with the cash flow generated by the base asset pool as value, and finally pays out the issued securities with the cash flow generated by the base asset pool.

The base asset may be a base liability asset, such as accounts receivable, etc.

The securities assets may refer to securities supported by the base assets in the base asset pool, for example, the securities assets may be bonds, funds, etc., and are only exemplified herein, and are not specifically limited.

Based on this, the present specification proposes a technical solution for base asset buying by calling a blockchain intelligent contract when cash flow in an investment account of an asset manager of a securitized asset satisfies a preset condition.

In one aspect, an asset manager platform (for ease of description, referred to herein simply as an asset manager) securities assets issues a target transaction to a blockchain upon determining that cash flow in an investment account of the asset manager meets a preset condition.

The node device of the blockchain may invoke base asset purchasing logic in an intelligent contract deployed on the blockchain in response to the target transaction, add a target base asset to be purchased screened from the blockchain-authenticated base assets to the base asset pool, freeze an asset purchasing fund corresponding to the target base asset in an investment account of the asset manager through a banking system, and update a equity person of the target base asset to the asset manager when a fund freezing record for the purchasing fund issued to the blockchain by the banking system is monitored.

On the other hand, before updating the equity of the target base asset to the asset manager, the node device of the blockchain may further initiate an equity confirmation process for the target base asset and determine that the asset manager confirms the target base asset, and after updating the equity of the target base asset to the asset manager, the node device of the blockchain may generate an equity confirmation completion event that the asset manager has confirmed the target base asset, so that when the bank system monitors the equity confirmation completion event, the frozen asset corresponding to the target base asset purchases funds, from the investment account of the asset manager, to the investment account of the original equity of the target base asset.

As can be seen from the above description, when detecting that the cash flow index in the investment account of the asset manager meets the preset condition, the asset manager platform may send a target transaction to the blockchain to trigger the blockchain point device to invoke the intelligent contract, screen the target base asset to be purchased from the base asset stored in the blockchain, freeze the purchased funds of the target base asset through the banking system, complete the equity change of the target base asset after freezing, and instruct the banking system to transfer the asset-purchased funds of the asset manager from the asset manager investment account to the original equity investment account of the target base asset after confirming the target base asset, thereby realizing that the asset manager of the securitized asset can continuously and automatically purchase the base asset by calling the intelligent contract of the blockchain by using the cash flow in the investment account. Referring to fig. 4, fig. 4 is a schematic diagram of a blockchain-based asset procurement system shown in an exemplary embodiment of the description.

The blockchain-based asset procurement system includes: a blockchain, an original equity person platform for the blockchain docking, an asset management side platform for securitized assets, and a banking system.

The original equity person platform is used for publishing the basic assets of the original equity person to the blockchain for certification.

A securitized asset manager platform (herein referred to as an asset management platform) for issuing asset screening rules formulated by asset managers to the blockchain for certification, and deploying intelligent contracts for asset screening on the blockchain. The asset manager platform is of course also used to send transactions to the node devices on the blockchain after monitoring certain events to trigger the node devices on the blockchain to execute the transactions.

For example, the asset manager platform issues a target transaction to the blockchain upon determining that cash flow indicators in an investment account of the asset manager meet preset conditions, such that node devices of the blockchain invoke intelligent contracts deployed on the blockchain in response to the target transaction, screen target base assets to be purchased from the blockchain-certified base assets, and complete the purchasing of the target base assets.

The functionality of the asset manager platform is only illustrated here by way of example and is not specifically limited thereto.

Furthermore, the management mechanism may include: SPV (Special Purpose Vehicle, special purpose agency), etc., are only exemplary and not specifically limited herein.

And the banking system is used for maintaining the investment account of the original equity person, the investment account of the asset management party, transferring funds and the like.

Referring to fig. 5, fig. 5 is a flow chart illustrating a blockchain-based asset procurement method that is applicable to a blockchain node device that certifies the underlying asset to which an original equity is published, according to an exemplary embodiment of the present description, and that may include the steps as follows.

Step 502: the node equipment of the blockchain receives a target transaction triggered when a cash flow index of an investment account of an asset management party of the securitized asset meets a preset condition; wherein the securitized asset is an asset issued supporting a pool of base assets as value on the blockchain; the base asset pool is an asset pool created based on the blockchain-certified base asset;

step 504: the node equipment of the blockchain responds to the target transaction, invokes basic asset purchasing logic in an intelligent contract deployed on the blockchain, adds target basic assets to be purchased, which are screened out of the basic assets with the blockchain storage, into the basic asset pool, and freezes the asset purchasing funds corresponding to the target basic assets in an investment account of the asset manager through a banking system;

step 506: and updating the equity person of the target base asset to the asset management party when the node equipment of the blockchain monitors the fund freezing record for the purchased funds issued to the blockchain by the banking system.

The present specification does not specifically limit the above-mentioned base assets, which may be base liability assets such as receivables and the like.

The investment account may be a escrow account opened by an original equity person on a escrow bank.

The asset filtering rules can be set by an asset manager and issued to the blockchain for certification through the asset manager platform shown in fig. 4.

The base asset pool may be a collection of identifications of a plurality of screened base assets generated by intelligent contracts on a blockchain. The base assets in the base asset pool may issue securitized assets as value supports.

The base asset pool may be stored in a Storage space (Storage) of a contract account corresponding to the smart contract or in an account Storage space of a blockchain account of an asset manager (e.g., SPV agency). The storage locations of the pool of base assets are not specifically defined herein.

In addition, intelligent contracts for underlying asset screening are deployed on the blockchain.

In a deployed smart contract, comprising: basic asset purchase logic and asset validation logic.

And the base asset purchasing logic is used for adding the target base asset to be purchased, which is screened from the base assets stored in the blockchain, into the base asset pool, freezing the asset purchasing funds corresponding to the target base asset in the investment account of the asset manager through a banking system, and updating the equity person of the target base asset as the asset manager when the funds freezing record of the purchasing funds, which is issued to the blockchain by the banking system, is monitored.

And the asset validation logic is used for initiating validation processing for the target base asset before updating the equity person of the target base asset to the asset manager and updating the equity person of the target base asset to the asset manager after the asset manager validates the target base asset.

When the intelligent contract deployment is completed, the asset management side of the securitized asset can construct a target transaction through the asset management side platform when detecting that the cash flow index of the investment account of the asset management side meets the preset condition, and then issue the target transaction to the blockchain to call the intelligent contract deployed on the blockchain so as to complete the purchasing of the target basic asset.

In particular implementations, the target transaction may be constructed when the asset manager platform monitors that cash flow indicators in the investment account of the asset manager meet preset conditions. Or when the asset manager detects that the cash flow indicator in the investment account of the asset manager meets the preset condition, a purchase request can be initiated to the asset manager platform so that the asset manager platform constructs a target transaction.

For example, the cash flow indicator may be a cash flow balance and the predetermined condition may be that the cash flow balance reaches a predetermined threshold.

When the asset manager platform monitors that the cash flow balance in the investment account of the asset manager reaches a preset threshold, a target transaction may be constructed. Or when the asset manager detects that the cash flow balance in the investment account of the asset manager reaches a preset threshold, a request for purchase may be initiated to the asset manager platform to cause the asset manager platform to construct a target transaction.

The asset manager platform may then issue the constructed target transaction to the blockchain.

After the target transaction is monitored, the node device of the blockchain may invoke the underlying asset procurement logic declared in the smart contracts deployed on the blockchain.

In one aspect, the intelligent contract can add a target base asset to be purchased, screened from the blockchain-certified base assets, to the base asset pool based on the base asset purchasing logic.

In particular, the intelligent contract can detect whether asset screening rules set by an asset manager are verified on the blockchain.

If the blockchain does not store the asset screening rules set by the asset manager, a reminder event is generated. And prompting the asset manager to set asset screening rules after the platform of the asset manager monitors the reminding event. And the platform of the asset management side issues the set asset screening rules to the blockchain.

If the blockchain is verified by the asset screening rule set by the asset management side, the asset screening rule is obtained, target base assets to be purchased, which accord with the asset screening rule set by the asset management side, are screened out from the base assets of the blockchain verification, and the target base assets are added into the base asset pool.

Of course, to ensure that the value of the screened target base asset matches the asset-in funds of the asset manager. In the process of screening the target base assets, the node device of the blockchain can screen out target base assets which meet asset screening rules set by an asset manager and have asset values matched with the value of the asset purchasing funds of the asset manager from the base assets of the blockchain certificate.

It should be noted that, the asset value of the target base asset matches the value of the asset-applied funds, which may mean that the asset value of the target base asset is completely consistent with the value of the asset-applied funds.

For example, if the cash flow generated by a target base asset is 1000 ten thousand and the asset-applied funds are also 1000 ten thousand, the asset value of the target base asset matches the value of the asset-applied funds.

Of course, the asset value of the target base asset matching the value of the asset-applied funds may also mean that the asset value of the target base asset is a preset multiple of the value of the asset-applied funds, the asset value of the target base asset being approximately consistent with the value of the asset-applied funds.

For example, the asset value of the target base asset is 1.1 times the asset's applied funds. Assuming that the asset value of the target base asset is 1100 ten thousand and the asset procurement funds are 1000 ten thousand, the asset value of the target base asset can be considered to match the asset procurement funds.

Or assume that the asset value of the target base asset is 0.9 times the asset's applied funds. Assuming that the asset value of the target base asset is 900 ten thousand and the asset procurement funds are 1000 ten thousand, the asset value of the target base asset can be considered to match the asset procurement funds.

The node device of the blockchain may also perform validation on the target base asset after the creation of the target base asset pool is completed.

On the other hand, the intelligent contract may freeze, via a banking system, the asset-procurement funds corresponding to the target base asset in the investment account of the asset manager based on the base asset-procurement logic.

When implemented, the smart contract may generate a freeze event for the asset-declared funds corresponding to the target base asset in the investment account for the asset manager.

When the bank system monitors the freezing event, the bank system can freeze the asset buying funds corresponding to the target basic assets in the investment account of the asset management party, and issue a funds freezing record to the blockchain.

After receiving the fund freezing record issued to the blockchain by the banking system, the intelligent contract can determine that the banking system freezes the purchased funds corresponding to the target basic asset in the investment account of the asset management party, and updates the equity person of the target basic asset as the asset management party.

In the embodiment of the specification, before updating the equity person of the target base asset to the asset manager, the node device of the blockchain may further call asset validation logic in an intelligent contract on the blockchain, initiate validation processing for the target base asset, and update the equity person of the target base asset to the asset manager after the asset manager validates the target base asset.

For example, the node device of the blockchain may further invoke asset validation logic in the smart contract to generate a validation event in a contract account of the smart contract. After the asset manager platform monitors the right confirming event, the asset manager can be reminded to confirm the target basic asset and sign. After the asset manager completes the validation of the target base asset, the asset manager platform submits validation information submitted by the asset manager (e.g., asset manager signature) to the smart contract. After receiving the rights information, the intelligent contract can determine that the asset manager rights the target base asset, and then the intelligent contract can update the rights and interests corresponding to the target base asset from the original rights and interests to the asset manager.

In updating the equity, in an alternative implementation, equity information for the base asset is maintained on node devices of the blockchain. Upon updating, the intelligent contract can update the equity person of the base asset after the validation maintained on the blockchain node device from the original equity person to the asset manager.

In another alternative implementation, the equity information of the target base asset is maintained on the asset manager platform, the intelligent contract may generate an equity update event, and after the equity update event is monitored by the asset manager platform, the equity of the maintained target base asset on the asset manager platform may be updated by the original equity to the asset manager, and equity update success information may be submitted to the intelligent contract. The intelligent contract, upon receipt of the equity update success information, may determine that the equity of the target base asset is updated as an asset manager.

In addition, upon determining that the asset manager has authorized the target base asset, the banking system may be instructed to transfer the frozen applied funds from the investment account of the asset manager to the investment account of the original equity person of the target base asset.

When the intelligent contract is realized, after receiving the right confirming information, the intelligent contract confirms that the asset management party confirms the target basic asset. The smart contract may then generate a validation completion event that the asset manager has validated against the target base asset.

And when the bank system monitors the right confirmation completion event, transferring the frozen purchase funds corresponding to the target basic asset from the investment account of the asset management party to the investment account of the original equity person of the target basic asset.

As can be seen from the above description, when detecting that the cash flow index in the investment account of the asset manager meets the preset condition, the asset manager platform may send a target transaction to the blockchain to trigger the blockchain point device to invoke the intelligent contract, screen the target base asset to be purchased from the base asset stored in the blockchain, freeze the purchased funds of the target base asset through the banking system, complete the equity change of the target base asset after freezing, and instruct the banking system to transfer the asset-purchased funds of the asset manager from the asset manager investment account to the original equity investment account of the target base asset after confirming the target base asset, thereby realizing that the asset manager of the securitized asset can continuously and automatically purchase the base asset by calling the intelligent contract of the blockchain by using the cash flow in the investment account.

The application also provides an embodiment of the device corresponding to the embodiment of the method.

Corresponding to the method embodiments described above, the present specification also provides an embodiment of a blockchain-based asset buying device. Embodiments of the blockchain-based asset buying apparatus of the present specification may be applied to an electronic device. The apparatus embodiments may be implemented by software, or may be implemented by hardware or a combination of hardware and software. Taking software implementation as an example, the device in a logic sense is formed by reading corresponding computer program instructions in a nonvolatile memory into a memory by a processor of an electronic device where the device is located for operation. In terms of hardware, as shown in fig. 6, a hardware structure diagram of an electronic device where the blockchain-based asset purchasing device in the present disclosure is located is shown in fig. 6, and in addition to the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 6, the electronic device where the device is located in the embodiment generally may further include other hardware according to the actual function of the electronic device, which is not described herein again.

Referring to fig. 7, fig. 7 is a block chain based asset procurement device shown in an exemplary embodiment of the description.

The apparatus is applied to a node device of the blockchain, the apparatus comprising:

a receiving module 701 for receiving a target transaction triggered when a cash flow index of an investment account of an asset manager of a securitized asset meets a preset condition; wherein the securitized asset is an asset issued supporting a pool of base assets as value on the blockchain; the base asset pool is an asset pool created based on the blockchain-certified base asset;

A calling module 702, responsive to the target transaction, for calling base asset purchasing logic in an intelligent contract deployed on the blockchain, adding a target base asset to be purchased, which is screened out of the blockchain-authenticated base assets, to the base asset pool, and freezing asset purchasing funds corresponding to the target base asset in an investment account of the asset manager through a banking system;

And an updating module 703, configured to update the equity person of the target base asset to the asset manager when the frozen record of the funds for the purchased funds issued to the blockchain by the banking system is acquired.

Optionally, the cash flow indicator is a cash flow balance;

Optionally, the calling module 702 obtains an asset screening rule set by an asset manager of the blockchain storage certificate; and screening out target base assets to be purchased, which accord with the asset screening rule, from the base assets of the blockchain certification based on the acquired asset screening rule, and adding the screened target base assets into the base asset pool.

The calling module 702 screens out, from the blockchain-certified base assets, base assets that meet the asset screening rules and whose asset value matches the value of the asset's applied funds.

Optionally, the invoking module 702 generates a freeze event for the purchased funds corresponding to the target base asset in the investment account of the asset manager, so that when the bank system monitors the freeze event, the purchased funds corresponding to the target base asset in the investment account of the asset manager are frozen, and the funds freeze record is issued to the blockchain for certification.

Optionally, the updating module 703 further invokes an asset validation logic in the intelligent contract, initiates a validation process for the target base asset, and updates the equity person of the target base asset to the asset manager after the asset manager validates the target base asset.

Optionally, the apparatus further includes a generating module 704 that generates an acknowledgment completion event that the asset manager has made an acknowledgment to the target base asset, such that when the bank system monitors the acknowledgment completion event, the frozen applied funds corresponding to the target base asset are transferred from the investment account of the asset manager to the investment account of the original equity person of the target base asset.

The system, apparatus, module or unit set forth in the above embodiments may be implemented in particular by a computer chip or entity, or by a product having a certain function. A typical implementation device is a computer, which may be in the form of a personal computer, laptop computer, cellular telephone, camera phone, smart phone, personal digital assistant, media player, navigation device, email device, game console, tablet computer, wearable device, or a combination of any of these devices.

In a typical configuration, a computer includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM). Memory is an example of computer-readable media.

Computer readable media, including both non-transitory and non-transitory, removable and non-removable media, may implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, read only compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic disk storage, quantum memory, graphene-based storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by the computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.

It should also be noted that 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 one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

The foregoing describes specific embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

The terminology used in the one or more embodiments of the specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the specification. As used in this specification, one or more embodiments and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used in one or more embodiments of the present description to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of one or more embodiments of the present description. The word "if" as used herein may be interpreted as "at … …" or "at … …" or "in response to a determination" depending on the context.

The foregoing description of the preferred embodiment(s) is (are) merely intended to illustrate the embodiment(s) of the present invention, and it is not intended to limit the embodiment(s) of the present invention to the particular embodiment(s) described.

Claims

1. A blockchain-based asset procurement method, comprising:

Receiving a target transaction triggered when a cash flow index of an investment account of an asset manager meets a preset condition, wherein a securitized asset of the asset manager is an asset issued by supporting a base asset pool as a value on the blockchain, and the base asset pool is an asset pool created based on the blockchain-evidence-based base asset;

In response to the target transaction, executing base asset procurement logic in an intelligent contract deployed on the blockchain, adding target base assets to be procured, which are screened from the blockchain-certified base assets, to the base asset pool, and freezing asset procurement funds corresponding to the target base assets in an investment account of the asset manager through a banking system;

Updating the equity person of the target base asset to the asset manager when a funds freeze record for the purchased funds issued by the banking system to the blockchain is acquired;

wherein the freezing, by the banking system, the purchased funds corresponding to the target base asset in the investment account of the asset manager comprises: and generating a freezing event of the purchased funds corresponding to the target basic assets in the investment account of the asset management party, so that when the bank system monitors the freezing event, the purchased funds corresponding to the target basic assets in the investment account of the asset management party are frozen, and a fund freezing record is issued to the blockchain for certification.

2. The method of claim 1, the adding to the base pool of target base assets to be purchased screened from the blockchain-certified base assets, comprising:

And screening target base assets to be purchased, which accord with the asset screening rule, from the base assets with the blockchain certification based on the acquired asset screening rule, and adding the screened target base assets into the base asset pool.

3. The method of claim 2, the target transaction further comprising an asset-applied funds of an asset manager; screening target base assets to be purchased which meet the asset screening rule from the base assets with the blockchain certification, wherein the target base assets to be purchased are screened out from the base assets with the blockchain certification, and the target base assets to be purchased comprise:

and screening out the basic assets conforming to the asset screening rule from the blockchain-certified basic assets, and matching the asset value with the value of the asset-purchased funds.

4. The method of claim 1, the updating the equity person of the target base asset to the asset manager, comprising:

And executing asset validation logic in the intelligent contract, initiating validation processing for the target base asset, and updating the equity person of the target base asset to the asset manager after the asset manager validates the target base asset.

5. The method of claim 4, the method further comprising:

6. The method of claim 1, the investment account comprising a escrow account opened at a escrow bank; the securitized asset comprising a bond or a fund; the base assets include base liability assets.

7. A blockchain-based asset procurement method, comprising:

determining whether cash flow indicators of investment accounts of asset managers meet preset conditions, wherein securitized assets of the asset managers are assets issued by supporting a base asset pool as value on the blockchain, and the base asset pool is an asset pool created based on the blockchain-authenticated base assets;

When the cash flow index meets preset conditions, initiating target transaction to a blockchain, so that node equipment of the blockchain executes basic asset purchasing logic in an intelligent contract deployed on the blockchain, adding target basic assets to be purchased, which are screened out of basic assets stored in the blockchain, into the basic asset pool, and freezing asset purchasing funds corresponding to the target basic assets in an investment account of an asset manager through a banking system; and updating the equity person of the target base asset to the asset manager upon acquiring a funds freeze record for the purchased funds issued by the banking system to the blockchain;

8. A blockchain-based asset buying device comprising:

The system comprises a receiving module, a processing module and a processing module, wherein the receiving module is used for receiving a target transaction triggered when a cash flow index of an investment account of an asset management side meets a preset condition, securitized assets of the asset management side are assets issued by taking a basic asset pool as a value to be supported on a blockchain, and the basic asset pool is an asset pool created based on the basic assets of the blockchain storage;

A calling module, responding to the target transaction, executing basic asset purchasing logic in an intelligent contract deployed on the blockchain, adding target basic assets to be purchased, which are screened out from the basic assets with blockchain storage, into the basic asset pool, and freezing the asset purchasing funds corresponding to the target basic assets in an investment account of the asset manager through a banking system;

The updating module is used for updating the equity person of the target basic asset to the asset management party when acquiring a fund freezing record aiming at the purchased fund and issued to the blockchain by the banking system;

The calling module is specifically configured to: and generating a freezing event of the purchased funds corresponding to the target basic assets in the investment account of the asset management party, so that when the bank system monitors the freezing event, the purchased funds corresponding to the target basic assets in the investment account of the asset management party are frozen, and a fund freezing record is issued to the blockchain for certification.

9. The apparatus of claim 8, the invoking module to obtain asset screening rules set by an asset manager for the blockchain inventory; and screening out target base assets to be purchased, which accord with the asset screening rule, from the base assets of the blockchain certification based on the acquired asset screening rule, and adding the screened target base assets into the base asset pool.

10. The apparatus of claim 9, the target transaction further comprising an asset-applied funds of an asset manager;

11. The apparatus of claim 8, the update module to execute asset validation logic in the smart contract, initiate validation processing for the target base asset, and update a equity person of the target base asset to the asset manager after validation of the target base asset by the asset manager.

12. The apparatus of claim 11, further comprising a generation module that generates an validation completion event that the asset manager has validated the target base asset such that when the validation completion event is monitored by the banking system, frozen applied funds corresponding to the target base asset are transferred from the investment account of the asset manager to the investment account of the original equity person of the target base asset.

13. The apparatus of claim 8, the investment account comprising a escrow account opened at a escrow bank; the securitized asset comprising a bond or a fund; the base assets include base liability assets.

14. A blockchain-based asset buying device comprising:

A determining unit configured to determine whether a cash flow index of an investment account of an asset manager satisfies a preset condition, wherein the securitized asset of the asset manager is an asset issued by supporting a base asset pool as a value on the blockchain, and the base asset pool is an asset pool created based on the blockchain-authenticated base asset;

A calling unit, when the cash flow index meets a preset condition, initiating a target transaction to a blockchain, so that node equipment of the blockchain executes basic asset purchasing logic in an intelligent contract deployed on the blockchain, adds target basic assets to be purchased, which are screened out of basic assets with the blockchain, into the basic asset pool, and freezes asset purchasing funds corresponding to the target basic assets in an investment account of an asset manager through a banking system; and updating the equity person of the target base asset to the asset manager upon acquiring a funds freeze record for the purchased funds issued by the banking system to the blockchain;

The calling unit is specifically configured to: and generating a freezing event of the purchased funds corresponding to the target basic assets in the investment account of the asset management party, so that when the bank system monitors the freezing event, the purchased funds corresponding to the target basic assets in the investment account of the asset management party are frozen, and a fund freezing record is issued to the blockchain for certification.

15. An electronic device, comprising:

A processor;

A memory for storing processor-executable instructions;

wherein the processor is configured to implement the method of any of claims 1-7 by executing the executable instructions.

16. A computer readable storage medium having stored thereon computer instructions which, when executed by a processor, implement the steps of the method of any of claims 1-7.