CN115578097A - Block chain-based digital asset transaction method and system - Google Patents
Block chain-based digital asset transaction method and system Download PDFInfo
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Abstract
A method and a system for block chain-based digital asset transaction, the method is realized based on intelligent contracts of block chains, and comprises the following steps: storing the digital assets to the block chain according to the digital asset issuing and circulating standard contract when receiving a digital asset issuing request sent by a digital asset issuing client; receiving and recording a digital asset transaction request sent by a user side, and calculating the current pricing and current balanced exchange rate of each type of digital assets by an asset pricing intelligent contract according to the current issuing amount, current consumption amount, transaction total amount, commodity price index capable of being purchased and commodity quantity of each type of digital assets; and according to the digital asset issuing and circulating standard contract and the current balanced exchange rate, the transaction conversion intelligent contract carries out transaction on the digital assets according to all the digital asset transaction requests. The method can determine the value and exchange rate of the digital assets in real time according to the market information, the scale of the digital assets and the transaction condition, and ensures the stable circulation of the value of the digital assets and the balance of the exchange rate.
Description
The application is a divisional application of a primary application, and the application numbers of the primary application are as follows: 201810247448.1, the name of the invention is: a digital asset transaction method and system based on block chains are disclosed, the application date is as follows: year 2018, month 3, and day 23.
Technical Field
The invention relates to the technical field of computer networks, in particular to a digital asset transaction method and system based on a blockchain.
Background
Digital assets on the internet generally refer to digital resources that exist in the form of electronic data and have a certain value and economic benefit, such as merchant points, electronic money, paid music, and the like. Generally, each digital asset system is relatively independent, and digital assets can only circulate in the same system and cannot be intercommunicated and exchanged among cross systems. However, with the development of the internet and shared economy, the circulation among various digital assets will become a trend, which has an important promoting effect on realizing the effective allocation of resources.
The basis of digital asset transaction is the common trust of value, transaction parties and transaction rules, but because the value evaluation of each digital asset system is difficult to achieve unification and great difference exists in benefit distribution requirements, the benefit distribution is difficult to coordinate, and free transaction among digital assets is difficult to achieve. In order to realize free trading among the digital assets, the traditional solution is to adopt a centralized exchange, which can make a uniform trading rule or realize trading among the digital assets according to a market matching mechanism by relying on the credit endorsement of the exchange. However, setting up a multi-party approved authority among numerous digital assets and establishing a unified set of transaction rules across multiple value systems requires immeasurable computational, storage, and management costs; moreover, the centralized organizational architecture centralizes rights and information, which makes the central authority itself vulnerable to attacks or malicious operations, thereby disrupting the operation of the marketplace.
The block chain is used as a bottom layer technology of the bit currency, combines technologies such as distributed computation and storage, a cryptography algorithm, a distributed consistency algorithm, an intelligent contract and the like, constructs a decentralized, whole-network consensus, transparent data and traceable distributed network architecture, and has attracted high attention in various fields such as finance, economy, science and technology and the like.
At present, in terms of using a blockchain to realize transactions between different digital assets, there are mainly 0x protocols and the like, and these digital asset systems utilize the characteristics of block chain full-network accounting and distributed consensus, provide a decentralized instant payment and settlement system, or realize circulation between different digital assets by means of matching users with bills and trades. However, when the pricing and exchange rate of the digital assets are determined, the methods completely depend on the buying and selling in the external market, so that in the digital asset market with insufficient scale and extremely asymmetric information, the trading price is extremely easily influenced by human factors, so that the trading price deviates from the value of the assets, larger fluctuation is generated, the assets are lost, and the stable circulation and balance of the value are difficult to realize.
Disclosure of Invention
The application provides a block chain-based digital asset transaction method and a block chain-based digital asset transaction system, which are used for carrying out balanced pricing on digital assets in a market, automatically determining pricing and balanced exchange rate of the digital assets and ensuring optimal allocation of resources in the market.
According to a first aspect, an embodiment provides a block chain-based digital asset transaction method applied to a server, wherein the server comprises a digital asset issuance circulation standard contract, a transaction redemption intelligent contract and an asset pricing intelligent contract, and the method comprises the following steps:
receiving a digital asset transaction request sent by a user side;
the transaction conversion intelligent contract records all the digital asset transaction requests;
the asset pricing intelligent contract calculates the current pricing of each type of digital assets according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets, and determines the current equilibrium exchange rate according to the current pricing;
according to the digital asset issuing and circulating standard contract and the current balanced exchange rate, the transaction conversion intelligent contract carries out transaction on the digital asset according to all the digital asset transaction requests;
the digital asset issuance currency standard contract, the transaction conversion smart contract, and the asset pricing smart contract are smart contracts established on a blockchain basis.
According to a second aspect, an embodiment provides a blockchain-based digital asset transaction system, comprising:
a user client for sending a digital asset transaction request to a server;
the server comprises an intelligent contract layer, a block chain and a universal module for realizing interaction of the intelligent contract layer and the block chain, wherein the intelligent contract layer runs on the block chain and comprises a digital asset intelligent contract module, a transaction exchange intelligent contract module and an asset pricing intelligent contract module; the transaction exchange intelligent contract module is used for recording all the digital asset transaction requests, calculating the current pricing of each type of digital assets according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets, and determining the current balanced exchange rate according to the current pricing; the asset pricing intelligent contract module is used for trading the digital assets according to all the digital asset trading requests according to the digital asset issuing circulation standard contract established by the digital asset intelligent contract module based on the block chain and the current equilibrium exchange rate.
According to a third aspect, an embodiment provides a computer readable storage medium comprising a program executable by a processor to implement a method for blockchain based digital asset trading as described above.
According to the block chain-based digital asset trading method, system and computer-readable storage medium of the embodiment, the server can calculate the current pricing of each type of digital asset according to the current issuing amount, current consumption amount, transaction total amount, commodity price index and commodity quantity which can be purchased, determine the current equilibrium exchange rate according to the current pricing, and then perform trading of all digital assets according to the current equilibrium exchange rate according to the standard contract of digital asset issuing and circulation, so that the value and exchange rate of the digital assets can be determined in real time according to the macroscopic information of the market and the self scale and trading condition of each type of digital assets, and the optimal configuration of resources in the market is ensured.
Drawings
FIG. 1 is a schematic diagram of a server in one embodiment;
FIG. 2 is a block diagram of a digital asset issuance circulation standard contract;
FIG. 3 is a class diagram of a digital asset issuance currency standard contract;
FIG. 4 is a block diagram of a blockchain-based digital asset transaction system in one embodiment;
FIG. 5 is a flow diagram of a blockchain-based digital asset transaction method in an exemplary embodiment;
FIG. 6 is a flow diagram of a digital asset merchant issuing a digital asset;
FIG. 7 is a schematic diagram of a structure for issuing digital assets by merchants and purchasing digital assets by users;
fig. 8 is a flow diagram of redemption of different types of digital assets between different users.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
The block chain provides a bottom framework with whole network accounting, information transparency and non-falsification through distributed storage, an encryption algorithm and a consensus mechanism, and the intelligent contract is a service logic code operated based on the block chain, so that the block chain provides conditions for the intelligent contract, and the intelligent contract can be operated on the bottom block chain framework (such as an Ethernet block chain).
In the embodiment of the invention, based on a block chain, an intelligent contract layer in a server calculates the current pricing of each type of digital assets in real time according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets in the market, determines the current balanced exchange rate according to the current pricing, and further issues a circulation standard contract according to the established digital assets so that all transaction requests are carried out according to the balanced exchange rate.
Fig. 1 shows a schematic structural diagram of a server in an embodiment, as shown in fig. 1, the server includes an intelligent contract layer 1, a general module 2, and a blockchain 3, the intelligent contract layer 1 interacts with the blockchain 3 through the general module 2, so that the intelligent contract layer 1 runs on the blockchain 3; in the present embodiment, intelligent contract layer 1 includes digital asset intelligent contract module 11, transaction conversion intelligent contract module 12 and asset pricing intelligent contract module 13. The transaction conversion intelligent contract module 12 is used for recording all digital asset transaction requests when the server receives the digital asset transaction requests; the asset pricing intelligent contract module 13 is used for calculating the current pricing of each type of digital assets according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets, and determining the current balanced exchange rate according to the current pricing; the transaction conversion intelligent contract module 12 is further configured to trade the digital assets according to all the digital asset transaction requests according to the current equilibrium exchange rate determined by the digital asset issuance and circulation standard contract and the asset pricing intelligent contract module 13, which are established by the digital asset intelligent contract module 11 based on the blockchain.
The Digital asset intelligent contract module 11 constructs a Digital asset distribution Standard contract, i.e. a unified Digital asset distribution and transaction manner, and fig. 2 and 3 show the contents of the Digital asset distribution Standard contract in the form of a structure diagram and a class diagram, respectively, as shown in fig. 2 and 3, the Digital asset distribution Standard contract (Digital Assets Standard) includes the following contents:
1) Digital asset name (name): representing the name of the digital asset in the form of a string; it is represented in the class diagram as: -name: string;
2) Digital asset symbol (symbol): a unit symbol representing a digital asset in the form of a string; it is represented in the class diagram as: -symbol: string;
3) Total digital asset release (totalSupply): representing the total volume of issuance of the digital asset in the form of a long integer (agent 256); it is represented in the class diagram as: -totalpupply: a uint256;
4) Digital asset account balance array (balanceOf): representing the balance of an account with the digital asset and the digital asset corresponding to the account by mapping (address = > uint 256) of the account address and the balance, wherein the balance is represented in a long integer form;
it is represented in the class diagram as: -balanceOf: mapping (address = > unint 256);
5) The digital asset issuing method comprises the following steps: issuing the digital assets by taking the destination account address (address _ to) and the issuing amount (uint 256_ account 1) of the digital assets as parameters, and increasing the total issuing amount of the digital assets corresponding to the destination account address;
the digital asset issuance method is represented in the class diagram as: issue (address _ to, issue 256_ account 1), which is a digital asset distribution function;
6) The digital asset consumption method comprises the following steps: consuming the digital assets by taking the consumption account address (address _ from) and the consumption amount (uint 256_ account 2) of the digital assets as parameters, and correspondingly reducing the total issuing amount of the digital assets corresponding to the consumption account address;
the digital asset consumption method is represented in the class diagram as: the constraint (address _ from, fluid 256_ account 2), which is a digital asset consumption function;
7) The digital asset transfer method comprises the following steps: transferring assets under the digital asset system of the same type by taking the sender account address (address _ from), the receiver account address (address _ to) and the digital asset transfer amount (uint 256_ value) as parameters, and modifying an account balance array under the digital asset system of the type, namely increasing the account balance corresponding to the receiver account address and reducing the account balance corresponding to the sender account address by equal amount;
the digital asset transfer method is represented in the class diagram as: transfer (address _ from, address _ to, uint256_ value): bool, a digital asset transfer function; wherein, the boolean data type is represented by the bool;
8) The digital asset conversion method comprises the following steps: carrying out digital asset transfer among different types of digital assets by taking the account address (address _ sourceToken) of the sending party, the account address (address _ destToken) of the receiving party and the sent digital asset amount (uint 256_ sourceAmpount) as parameters, wherein the asset amount received by the receiving party is obtained by the current balanced exchange rate determined by the asset pricing contract intelligent module 13;
the digital asset transition method is represented in the class diagram as: convert (address _ sourceToken, address _ destToken, uint256_ sourceAmount): bool, i.e. the digital asset transfer function.
Based on the server shown in fig. 1, fig. 4 shows a digital asset transaction system based on a block chain in a specific embodiment, as shown in fig. 4, the system comprises a user client a, a server B and a digital asset issuing client C, the user client a comprises "query", "asset consumption", "asset transfer" and "asset exchange" functions, and relevant request messages can be sent to the server B according to the selection of a user, so that the server B can implement corresponding functions through an intelligent contract layer 1; the digital asset issuing client C comprises the functions of 'asset issuing', 'asset authorization' and 'commodity scale expansion', and similar to the user client A, can send related request messages to the server B according to the selection of a digital asset merchant, so that the server B can realize the corresponding functions through the intelligent contract layer 1. The general-purpose module 2 in the server B includes a visualization front-end module 21, an account management module 22, an Application Programming Interface (API) module 23, and a identity design mode module 24, which together provide an interactive Interface for data interaction between the intelligent contract layer 1 and the blockchain 3. The blockchain 3, which may be an ethernet blockchain, for example, includes an encryption algorithm module 31, a consensus algorithm module 32, a script engine module 33, a communication protocol module 34, and a data storage module 35, and is configured to implement functions of data storage, network communication, encryption and consensus of data transmission, and provide an operating environment for the intelligent contract layer 1.
In practical applications, the system interaction API module 23 may be Web3 or RPC (Remote Procedure Call); the encryption algorithm module 31 may employ a Hash (Hash) algorithm, such as the SHA256 algorithm or the SM3 algorithm; the consensus algorithm module 32 may employ a PoW (Proof of Work) algorithm, a PoS (Proof of title) algorithm, or a combination of both; the script engine module 33 may be an EVM (etherhouse Virtual Machine); at least one of a P2P (Peer to Peer) protocol, a broadcast mechanism, a routing management, an RPC, and a communication encryption may be adopted in the communication protocol module 34; the data storage module 35 may be a database, such as a LevelDB database or a CouchDB database system, and may also be a file system or a cloud storage. It should be noted that the present invention is only illustrative and not limited thereto.
Based on the digital asset transaction system shown in fig. 4, fig. 5 shows a block chain-based digital asset transaction method in an embodiment, which is described by taking a digital asset transaction performed by a user as an example, as shown in fig. 5, comprising the following steps:
step S1: a digital asset transaction request is sent.
The user may submit a digital asset transaction request, such as a digital asset sale request, a digital asset purchase request, or a digital asset redemption request, on the user client a, at which time the user client a sends the digital asset transaction request to the server B.
Step S2: a digital asset transaction request is recorded.
At the present moment, after receiving digital asset transaction requests sent by all users through the user client a, the server B triggers the intelligent contract layer 1 to run on the blockchain 3, and at this moment, the transaction exchange intelligent contract module 12 records all the digital asset transaction requests.
And step S3: current pricing is calculated.
The asset pricing intelligent contract module 13 calculates the current pricing of each type of digital assets according to the current issuing quantity, the current consumption quantity, the transaction total quantity, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets in the market, and is specifically realized by steps S31 to S33:
step S31: the current release total is calculated.
The asset pricing intelligent contract module 13 calculates the current issuing total amount of each type of digital assets by using formula (1) according to the current issuing amount and current consumption amount of each type of digital assets, wherein the formula (1) is as follows:
S i ＝I i -C i (1)
where i is the type of digital asset, S i For the current release amount of type I digital assets, I i Is the current volume of issue, C, of type i digital assets i Is the current consumption of type i digital assets, i being an integer greater than 0.
Step S32: the flow-through rate is calculated.
The asset pricing intelligent contract module 13 calculates the circulation rate of each type of digital assets according to the transaction total amount of each type of digital assets by using formula (2), namely, the average turnover number of each unit of digital assets per day, wherein the formula (2) is as follows:
wherein, V i Is the circulation rate of the type i digital assets,
for the total amount of transactions for type i digital assets,
for trade discount, the trade discount is defined as the product of the number of digital assets spent in a trade and the number of digital assets staying days in the trade, and reflects the transaction activity of the digital assets, wherein t j Transaction amount for j of type i digital assets, N j Consumption of j-th time for i-type digital assets, W j Is N j Corresponding number of detention days, m is the transaction number of i type digital assets, and j and m are integers greater than 0.
Step S33: current pricing is calculated.
The asset pricing intelligent contract module 13 calculates the current pricing of each type of digital assets by using formula (3) according to the calculated current release total amount, circulation rate, commodity price index and commodity quantity that each type of digital assets can buy, wherein the formula (3) is as follows:
wherein p is i A For the current pricing of i-type digital assets, P is the commodity price index, M, that i-type digital assets can purchase i The number of items that can be purchased for the type i digital asset.
And step S4: and calculating the current equilibrium exchange rate.
After obtaining the current pricing rate of each type of digital asset, the asset pricing intelligent contract module 13 obtains the ratio between the current pricing rates of any two types of digital assets to obtain the current equilibrium exchange rate.
Step S5: a transaction is conducted for the digital asset.
After the asset pricing intelligent contract module 13 obtains the current equilibrium exchange rate, the transaction conversion intelligent contract module 12 performs transaction on the digital assets according to all the digital asset transaction requests by taking the current equilibrium exchange rate as the exchange rate in the transaction according to the digital asset transfer method and/or the digital asset conversion method in the digital asset issuing and circulation standard contract. Specifically, the transaction conversion intelligent contract module 12 matches all digital asset transaction requests, and then achieves transactions according to the current equilibrium exchange rate, for example, the request for exchanging the asset 2 by using the asset 1 sent by the user 1 is matched with the request for exchanging the asset 1 by using the asset 2 sent by the user 2, and after the matching is successful, the transaction conversion intelligent contract module 12 achieves asset conversion transactions between the user 1 and the user 2 according to the digital asset conversion method in the digital asset issuing and circulation standard contract and the current equilibrium exchange rate.
In practical applications, the digital asset merchant can issue the digital asset at any time through the digital asset issuing client C by using its own account. Fig. 6 shows a flow chart of issuing digital assets by a digital asset merchant, as shown in fig. 6, the digital asset merchant logs in its own account on a digital asset issuing client C, sets the name, symbol and issuing amount of a digital asset to be issued, and then initiates a digital asset issuing request, the digital asset issuing client C sends the digital asset issuing request and the name, symbol and issuing amount of the digital asset to a server B, the server B receives the digital asset issuing request and then triggers an intelligent contract layer 1 to run a digital asset issuing method in a digital asset issuing circulation standard contract on a block chain 3, the digital asset is stored in the block chain, and the total commodity amount and issuing amount corresponding to the type of digital asset are increased, at this time, the transaction total amount T and the current total commodity amount S in the asset pricing intelligent contract module 13 are increased.
Similarly, the user may also use his own account to send a request for exchanging commodities through the user client a, specifically, the user logs in his own account on the user client a, and then sends a request for exchanging commodities to the server B, and the server B triggers the intelligent contract layer 1 to run a digital asset consumption method in the digital asset issuance and circulation standard contract on the blockchain 3 after receiving the request for exchanging commodities, at this time, the transaction exchange intelligent contract module 12 consumes the digital assets by using the digital asset consumption method, and reduces the balance of the user account, and at this time, the transaction total amount T and the current issuance total amount S in the asset pricing intelligent contract module 13 are reduced.
In order to more clearly embody the object of the present invention, further illustration is made on the basis of the above-mentioned embodiments.
Fig. 7 is a schematic diagram showing the structure of a digital asset issued by a merchant and purchased by a user, as shown in fig. 7, three merchants issue three different digital assets into the market through a digital asset transaction platform (a digital asset issuing client or a digital asset issuing web page) according to a digital asset issuing circulation standard contract: asset 1, asset 2, and asset 3, and sets the name, symbol, and release amount for these three different digital assets, respectively. There are two users in the market: the method comprises a user 1 and a user 2, wherein the user 1 purchases an asset 1 through a legal coin, the user 2 purchases an asset 2 and an asset 3 through the legal coin, and at the moment, a circulation standard contract is issued according to the digital asset, and a transaction exchange intelligent contract module automatically stores the digital asset purchased by the user in a corresponding user balance account book. At this time, the transaction total amount T and the current release total amount S of each digital asset in the asset pricing intelligent contract module are increased, and the price of the digital asset is automatically updated. In the process, for example, the merchant continues to issue the asset 1 to the market, the commodity total amount and the issuing amount corresponding to the asset 1 are increased, at this time, the transaction total amount T and the current issuing total amount S of the asset 1 in the asset pricing intelligent contract module are increased, at this time, the pricing and the current equilibrium exchange rate of the asset 1 are recalculated, so that the price of the asset 1 is automatically updated, and the equilibrium of the exchange rate is ensured.
Similarly, the user may use the digital assets to exchange corresponding commodities, for example, the user 2 uses the asset 2 to exchange commodities, and according to the digital asset issuing and circulating standard contract, the transaction exchange intelligent contract module may reduce the account balance of the user 2, and at the same time, the transaction total amount T and the current issuing total amount S of the asset 2 in the asset pricing intelligent contract module may be reduced, at this time, the asset pricing intelligent contract module may recalculate the pricing of the asset 2 and the current equilibrium exchange rate, so that the price of the asset 2 is automatically updated, and the exchange rate is kept in equilibrium.
The user can transfer money in the same type of digital asset system, for example, the user 1 and the user 2 both have the asset 1, the user 1 transfers a part of the asset 1 to the user 2, at this time, the transaction total amount T and the current issuing total amount S of the asset 1 in the asset pricing intelligent contract module are not changed, the pricing of the asset 1 and the current equilibrium exchange rate are kept balanced, the account balance of the user 1 is reduced by the transaction exchange intelligent contract module according to the digital asset issuing circulation standard contract, and the account balance of the user 2 is correspondingly increased.
The user may also exchange one type of digital asset for another, and fig. 8 shows a flow chart of exchanging different types of digital assets between different users, i.e., a flow chart of exchanging one type of digital asset for another type of digital asset by a user; as shown in fig. 8, a user 1 has an asset 1, a user 2 has an asset 2, and when the user 1 needs to exchange the asset 1 for the asset 2 and the user 2 needs to exchange the asset 1 for the asset 2, the user 1 and the user 2 respectively use their own accounts to initiate a digital asset transaction request through a user client transaction platform or a web page transaction platform, specifically, the user 1 initiates a request for exchanging the asset 1 for the asset 2, and the user 2 initiates a request for exchanging the asset 2 for the asset 1; after receiving the two requests, the server triggers the intelligent contract layer to run on the block chain, at the moment, the two requests enter the transaction exchange intelligent contract module, the transaction exchange intelligent contract module records the two requests, and then the current balanced exchange rate is sought for the asset pricing intelligent contract module; at this time, the asset pricing intelligent contract module calculates the pricing of the asset 1 and the asset 2 according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each digital asset, obtains the current equilibrium exchange rate between the asset 1 and the asset 2 according to the pricing, and then returns the equilibrium exchange rate to the transaction conversion intelligent contract module; the transaction conversion intelligent contract module utilizes the digital asset issuing and circulating standard contract module to perform transaction on the asset 1 and the asset 2 according to the balanced exchange rate so as to complete the conversion between the asset 1 and the asset 2; after the transaction is completed, the transaction broadcast and consensus can be performed through the blockchain and stored in the database of the blockchain.
In the digital asset exchange process shown in fig. 8, a distributed network architecture with block chain decentralized and network accounting, information transparency and real-time settlement characteristics are utilized, and since the exchange rate between asset 1 and asset 2 is calculated in real time according to the current issuing amount, current consumption amount, total transaction amount and other information of each digital asset in the market, the exchange is not completely dependent on the market mechanism, and thus is not affected by human factors; the issuing amount, the consumption amount, the commodity scale, the circulation speed and the like of each digital asset are monitored in real time through the asset pricing intelligent contract module, namely, each macroscopic economic index of the digital assets in the market is obtained in real time through the asset pricing intelligent contract module, each digital asset can be priced in real time, and the stable circulation of the digital asset value and the balance of exchange rate are ensured.
According to the digital asset transaction method and system based on the block chain, a digital asset merchant can issue assets according to a digital asset issuing and circulating standard contract through a digital asset issuing client, and a user can purchase, consume, transfer and exchange the digital assets through the user client, so that free issuing of each digital asset in a market and transaction and intercommunication of different types of digital assets are realized; the method utilizes a block chain decentralized distributed network architecture and the characteristics of whole network accounting, information transparency and real-time settlement, records all requests through a transaction exchange intelligent contract module when receiving a digital asset transaction request sent by a user, then calculates the current issuing total amount and circulation rate of each type of digital assets through an asset pricing intelligent contract module according to the current issuing amount, current consumption amount, transaction total amount, commodity price index and commodity quantity of each type of digital assets in the market, calculates the current pricing and balanced exchange rate of each type of digital assets through the current issuing total amount and circulation rate, and further utilizes a digital asset issuing and circulation standard contract to enable the digital assets to trade according to the balanced exchange rate; the intelligent contract module for asset pricing can monitor various macroscopic economic indexes such as the issuing amount, the consumption amount, the commodity scale and the circulation speed of each digital asset in real time to obtain market macroscopic information, can automatically price each digital asset in real time according to the market macroscopic information, the self scale and the transaction condition of each type of digital asset, and automatically determines the exchange rate, so that the intelligent contract module for asset pricing can not be influenced by human factors, ensures the stable circulation of the digital asset value and the balance of the exchange rate, and further ensures the optimal allocation of resources in a market.
Those skilled in the art will appreciate that all or part of the functions of the various methods in the above embodiments may be implemented by hardware, or may be implemented by computer programs. When all or part of the functions of the above embodiments are implemented by a computer program, the program may be stored in a computer-readable storage medium, and the storage medium may include: a read only memory, a random access memory, a magnetic disk, an optical disk, a hard disk, etc., and the program is executed by a computer to realize the above functions. For example, the program may be stored in a memory of the device, and when the program in the memory is executed by the processor, all or part of the functions described above may be implemented. In addition, when all or part of the functions in the above embodiments are implemented by a computer program, the program may be stored in a storage medium such as a server, another computer, a magnetic disk, an optical disk, a flash disk, or a removable hard disk, and may be downloaded or copied to a memory of a local device, or may be version-updated in a system of the local device, and when the program in the memory is executed by a processor, all or part of the functions in the above embodiments may be implemented.
The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. Numerous simple deductions, modifications or substitutions may also be made by those skilled in the art in light of the present teachings.
Claims (10)
1. A block chain-based digital asset transaction method is applied to a server, wherein the server comprises a digital asset issuing circulation standard contract, a transaction exchange intelligent contract and an asset pricing intelligent contract, and the method comprises the following steps:
receiving a digital asset transaction request sent by a user side;
the transaction exchange intelligent contract records all the digital asset transaction requests;
the asset pricing intelligent contract calculates the current pricing of each type of digital assets according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets, and determines the current equilibrium exchange rate according to the current pricing;
according to the digital asset issuing circulation standard contract and the current balanced exchange rate, the transaction conversion intelligent contract carries out transaction on the digital asset according to all the digital asset transaction requests;
the digital asset issuing circulation standard contract, the transaction exchange intelligent contract and the asset pricing intelligent contract are intelligent contracts established on the basis of blockchains;
the digital asset distribution standard contract comprises a digital asset name and a digital asset symbol which are expressed in the form of character strings, a total digital asset distribution amount which is expressed in the form of a long integer, a digital asset account balance array which is expressed in the form of a mapping of an account address and a balance, a digital asset distribution method, a digital asset consumption method, a digital asset transfer method and a digital asset conversion method;
the digital asset issuing method is a method for increasing the total issuing amount of the digital asset corresponding to a target account address by taking the issuing amount of the digital asset and the target account address as parameters;
the digital asset consumption method is a method for reducing the total issuing quantity of the digital assets corresponding to the consumption account address by taking the digital asset consumption amount and the consumption account address as parameters;
the digital asset transfer method is a method for increasing the account balance corresponding to the account address of a receiver and reducing the account balance corresponding to the account address of a sender by taking the account address of the sender, the account address of the receiver and the transfer amount of the digital assets as parameters for the same type of digital assets;
the digital asset conversion method is a method for transferring digital assets among different types of digital assets by taking the account address of a sender, the account address of a receiver and the amount of the sent digital assets as parameters.
2. The method of claim 1, wherein calculating the current pricing for each type of digital asset based on the current issue volume, current consumption volume, total transaction volume, commodity price index available for purchase, and quantity of commodities, and determining a current balanced rate based on the current pricing comprises:
calculating the current issuing total amount of each type of digital assets by adopting a formula (1) according to the current issuing amount and the current consumption amount of each type of digital assets;
calculating the circulation rate of each type of digital assets by adopting a formula (2) according to the transaction total amount of each type of digital assets;
calculating the current pricing of each type of digital assets by adopting a formula (3) according to the current issuing total amount, the circulation rate, and commodity price indexes and commodity quantity which can be purchased by each type of digital assets;
calculating the ratio of the current pricing of any two types of digital assets to obtain the current balanced exchange rate;
the formulas (1), (2) and (3) are respectively as follows:
S i ＝I i -C i (1)
where i is the type of digital asset, S i For the current total amount of issues of type I digital assets, said I i Is the current volume of issue of the type i digital assets, said C i For the current consumption of i-type digital assets, the V i Is the circulation rate of the i-type digital assets, the
Is the transaction amount of the i-type digital assets, the
For trade discounts, wherein t j Transaction amount for j of type i digital assets, N j Consumption of j-th time for i-type digital assets, W j Is N j Corresponding number of detention days, m being the number of transactions of a type i digital asset, said p i A Pricing the i type digital assets currently, wherein P is the commodity price index that the i type digital assets can purchase, and M i And the number of commodities which can be purchased for the type i digital assets, wherein i, j and m are integers which are larger than 0.
3. The method of claim 1, wherein said trading exchange smart contract trading digital assets in accordance with all of said digital asset trading requests based on a digital asset issuance circulation standard contract and a current equilibrium exchange rate comprises:
and according to the digital asset transfer method and/or the digital asset conversion method, the transaction conversion intelligent contract trades the digital assets according to all the digital asset trading requests by taking the current equilibrium exchange rate as the exchange rate during trading.
4. The method of claim 1, wherein the method further comprises:
receiving a digital asset issuing request sent by a digital asset issuing end, and a set digital asset name, a digital asset symbol and a digital asset issuing quantity;
and storing the digital assets in the block chain by the digital asset issuing method according to the digital asset issuing request and the set digital asset name, digital asset symbol and digital asset issuing quantity.
5. The method of claim 1, wherein the method further comprises:
receiving a commodity exchange request sent by a user side;
and according to the commodity exchange request, consuming the digital assets by adopting the digital asset consumption method.
6. A blockchain-based digital asset transaction system, comprising:
a user client for sending a digital asset transaction request to a server;
the server comprises an intelligent contract layer, a block chain and a universal module for realizing interaction of the intelligent contract layer and the block chain, wherein the intelligent contract layer runs on the block chain and comprises a digital asset intelligent contract module, a transaction exchange intelligent contract module and an asset pricing intelligent contract module; the transaction exchange intelligent contract module is used for recording all the digital asset transaction requests, and the asset pricing intelligent contract module is used for calculating the current pricing of each type of digital assets according to the current issuing amount, the current consumption amount, the transaction total amount, the commodity price index capable of being purchased and the commodity quantity of each type of digital assets and determining the current balanced exchange rate according to the current pricing; the transaction conversion intelligent contract module is used for performing transaction on the digital assets according to all the digital asset transaction requests according to a digital asset issuing and circulation standard contract and the current balanced exchange rate which are established by the digital asset intelligent contract module based on a block chain;
the digital asset distribution standard contract comprises a digital asset name and a digital asset symbol which are expressed in the form of character strings, a total digital asset distribution amount which is expressed in the form of a long integer, a digital asset account balance array which is expressed in the form of a mapping of an account address and a balance, a digital asset distribution method, a digital asset consumption method, a digital asset transfer method and a digital asset conversion method;
the digital asset issuing method is a method for increasing the total issuing amount of the digital asset corresponding to a target account address by taking the issuing amount of the digital asset and the target account address as parameters;
the digital asset consumption method is a method for reducing the total issuing quantity of the digital assets corresponding to the consumption account address by taking the digital asset consumption amount and the consumption account address as parameters;
the digital asset transfer method is a method for increasing the account balance corresponding to the account address of a receiver and reducing the account balance corresponding to the account address of a sender by taking the account address of the sender, the account address of the receiver and the transfer amount of the digital assets as parameters for the same type of digital assets;
the digital asset conversion method is a method for transferring digital assets among different types of digital assets by taking the account address of a sender, the account address of a receiver and the amount of the sent digital assets as parameters.
7. The system of claim 6, wherein the asset pricing intelligence contract module is specifically configured to calculate a current release total for each type of digital asset using equation (1) based on a current release volume and a current consumption volume for each type of digital asset; calculating the circulation rate of each type of digital assets by adopting a formula (2) according to the transaction total amount of each type of digital assets; calculating the current pricing of each type of digital assets by adopting a formula (3) according to the current issuing total amount, the circulation rate, and commodity price indexes and commodity quantity which can be purchased by each type of digital assets; calculating the ratio of the current pricing of any two types of digital assets to obtain the current balanced exchange rate; the formulas (1), (2) and (3) are respectively as follows:
S i ＝I i -C i (1)
where i is the type of digital asset, S i Is the current release amount of I type digital assets, the I i Is the current volume of issue of type i digital assets, C i For the current consumption of i-type digital assets, the V i Is the circulation rate of the i-type digital assets, the
Is the transaction amount of the i-type digital assets, the
For trading a compromise, wherein t j Transaction amount for j of type i digital assets, N j Consumption of j-th time for i-type digital assets, W j Is N j Corresponding number of days of stay, m being the number of trades of a type i digital asset, said p i A Current pricing for i-type digital assets, P being an index of commodity prices that i-type digital assets can purchase, M i The i, j and m are integers greater than 0 for the number of goods that can be purchased by the type i digital asset.
8. The system of claim 6, wherein the digital asset transaction system further comprises:
and the digital asset issuing client is used for sending a digital asset issuing request and the set digital asset name, digital asset symbol and digital asset issuing quantity to the server so as to enable the server to store the digital assets in the blockchain through a digital asset issuing method in the digital asset issuing circulation standard contract according to the digital asset issuing request and the set digital asset name, digital asset symbol and digital asset issuing quantity.
9. The system of claim 6, wherein the user client is further configured to send a redemption merchandise request to a server to cause the transaction redemption smart contract module in the server to consume digital assets via digital asset consumption methods in the digital asset issuance currency standard contract in accordance with the redemption merchandise request.
10. A computer-readable storage medium, characterized by comprising a program executable by a processor to implement the method of any one of claims 1 to 5.
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