TWI832119B - Creating and trading system for tokenized open-end funds and method thereof - Google Patents

Abstract

A creating and trading system for tokenized open-end funds and method thereof is disclosed. By deploying a smart contract of an open-end funds on a blockchain network through a fund end host, and calculating a performance fee according to an investment return rate of the open-end fund and adjusting a token value according to the performance fee, so as to generate a corresponding number of tokens according to a purchase request and the token value to transmit to a wallet address of a buyer’s host and updating a register of shareholders when receiving the purchase request from the buyer’s host, and executing a purchase function and a redemption function of the smart contract to simulate a transfer transaction when receiving the transfer request from the buyer’s, and centralized processing by the fund end host to avoid a transfer agent. The mechanism is help to improve the convenience, transparency and liquidity of fund transactions.

Description

Tokenized open-end fund creation and trading system and method thereof

The present invention relates to an open-end fund system and a method thereof, in particular to a tokenized open-end fund creation and transaction system and a method thereof.

In recent years, with the popularity and vigorous development of blockchain, various blockchain-based applications have sprung up. Among them, tokenizing real estate, stocks, funds or similar assets is currently popular. One of the applications.

Generally speaking, traditional assets, such as real estate, have high entry requirements for investment, a long closing period, and a lack of secondary markets for investment. Therefore, in order to solve this situation, some manufacturers have proposed converting assets into digital/tokenized securities, namely: Security Tokens. In this way, the assets can be divided into smaller units of investable parts. , while trading on established and regulated token exchanges. However, in open-end funds, no matter when investors enter the market, they should ensure that all investors receive equal treatment in paying performance fees. For example, if the return rate is high, higher performance fees should be paid, and if the return rate is low, higher performance fees should be paid. Lower performance fees. If the token value cannot be dynamically adjusted and performance fees are charged in an undisclosed or fixed-proportion internal deduction manner, investment will be reduced. The willingness of investors to buy and sell open-end funds also has the problem of poor convenience, transparency and liquidity of fund transactions.

To sum up, it can be seen that the convenience, transparency and liquidity of fund transactions have long been problems in the previous technology. Therefore, it is necessary to propose improved technical means to solve this problem.

The invention discloses a tokenized open-end fund creation and transaction system and a method thereof.

First, the present invention discloses a tokenized open-end fund creation and transaction system, which is applied to the blockchain network. This system includes: a fund-end host used to connect to and access the blockchain network. The fund-side host includes: a creation module, a calculation module, a subscription module and a transfer module. Among them, a module is established to publish smart contracts and fund wallet addresses corresponding to open-end funds on the blockchain network. The smart contract includes a shareholder list, a subscription function and a redemption function. The shareholder list Contains shareholder metadata and its corresponding shareholder wallet address, and when executing the smart contract, allows this smart contract to create, read, update or delete the shareholder metadata and its corresponding shareholder wallet address; computing module connection Establish a module to calculate the investment return rate of the open-end fund within a preset fixed period, calculate the performance fee based on the investment return rate, and adjust the token value based on the performance fee. When the equity of the open-end fund When the price of the unit remains unchanged, the token value is negatively correlated with the performance fee. When the price of the equity unit of the open-end fund is allowed to change, the token value is positively correlated with the performance fee; the subscription module is connected to the calculation module to When the fund-side host receives the subscription request from the buyer-side host, it executes the subscription function of the smart contract to generate N tokens based on the token value and the first price information of the subscription request, and transfer the N tokens The currency is transferred from the fund wallet address to the wallet address of the buyer's host, and The number of N tokens and the wallet address of the buyer's host are stored in the shareholder register, where N is a positive integer; the transfer module is connected to the calculation module to receive the source wallet address and destination wallet on the fund host. When making a transfer request for the address and transfer amount, the subscription function and redemption function of the smart contract are executed at the same time. When the subscription function is executed, M tokens of the corresponding transfer amount are generated, and the M tokens are Transfer to the destination wallet address, then store the generated number of M tokens and the destination wallet address in the shareholder register, and when executing the redemption function, destroy the corresponding transferred number of M tokens from the source wallet address. coins, where M is a positive integer; where, when the fund-side host receives a sale request from the seller-side host, and there is a subscription request from the buyer-side host on the fund-side host, the fund-side host compares the second price message of the sale request with When the first price information of the subscription request is matched, the fund-side host executes the subscription function and the redemption function to destroy tokens equivalent to the second price information from the wallet address of the seller-end host, and from the fund The wallet address transfers tokens equivalent to the second price information to the wallet address of the buyer-side host, and updates the shareholder metadata corresponding to the buyer-side host and seller-side host in the shareholder list and their corresponding shareholder wallet addresses.

In addition, the present invention also discloses a tokenized open-end fund creation and transaction method, which is applied to the blockchain network. The steps include: providing a fund-side host, and allowing the fund-side host to connect to and access the blockchain network. ; The fund host publishes the smart contract and fund wallet address corresponding to the open-end fund on the blockchain network. The smart contract includes the shareholder list, subscription function and redemption function. The shareholder list includes shareholder metadata and Its corresponding shareholder wallet address, and when executing the smart contract, this smart contract is allowed to create, read, update or delete the shareholder metadata and its corresponding shareholder wallet address; the fund-side host calculates at the preset fixed During the period, the investment return rate of the open-end fund is calculated, and the performance fee is calculated based on the investment return rate, and the token value is adjusted based on the performance fee. Among them, when the price of the equity unit of the open-end fund remains unchanged, the token value and the performance fee is negatively correlated, when open When the price of the equity unit of the fund is allowed to change, the token value is positively related to the performance fee; when the fund-side host receives a subscription request from the buyer-side host, the subscription function of the smart contract is executed to determine the value of the token according to the value of the token. and the first price information of the subscription request to generate N tokens, and transfer the N tokens from the fund wallet address to the wallet address of the buyer's host, and transfer the number of N tokens to the buyer's host The wallet address of When the second price information matches the first price information of the subscription request, the fund-end host executes the subscription function and the redemption function to destroy the wallet address of the self-sale end host and the value of the second price information. tokens, transfer tokens equivalent to the second price information from the fund wallet address to the wallet address of the buyer-side host, and update the shareholder metadata corresponding to the buyer-side host and seller-side host and their corresponding shareholders in the shareholder list wallet address; and when the fund-side host receives a transfer request containing the source wallet address, destination wallet address and transfer amount, it simultaneously executes the subscription function and redemption function of the smart contract. When executing the subscription function, Transfer the corresponding number of M tokens, transfer the M tokens to the destination wallet address, and store the number of M tokens and the destination wallet address in the shareholder register, and when executing the redemption function, The M tokens corresponding to the transferred amount are destroyed from the source wallet address, where M is a positive integer.

The system and method disclosed by the present invention are as above. The difference from the prior art is that the present invention publishes smart contracts corresponding to open-end funds on the blockchain network through the fund-end host, and at the same time calculates performance based on the investment return rate of the open-end funds. Fee and adjust the token value so that when receiving a subscription request from the buyer's host, a corresponding number of tokens will be generated based on the token value and the subscription request to be transferred to the wallet address of the buyer's host and the shareholder list in the smart contract will be updated. and upon receipt of a transfer request At the same time, the subscription function and redemption function of the smart contract are executed at the same time to simulate the transfer transaction, which is centrally processed by the fund-side host and avoids the use of a transfer agent.

Through the above technical means, the present invention can achieve the technical effect of improving the convenience, transparency and liquidity of fund transactions.

100:Blockchain network

110: Fund end host

111:Create a module

112:Computing module

113:Subscription module

114:Transfer module

120: Buyer-side host

130: Seller-side host

300: Shareholder list

400: Transaction window

410:Select component

420: Amount input block

430:Address input block

440: Determine component

Step 210: Provide a fund-side host and allow the fund-side host to connect to and access the blockchain network

Step 220: The fund host publishes a smart contract and a fund wallet address corresponding to an open-end fund on the blockchain network. The smart contract includes a shareholder list, a subscription letter and a redemption letter. Mode

Step 230: The fund host calculates an investment return rate of the open-end fund within a preset fixed period, calculates a performance fee based on the investment return rate, and adjusts a token value based on the performance fee

Step 240: When the fund-side host receives a subscription request from a buyer-side host, execute the subscription function of the smart contract to generate N based on the token value and a first price message of the subscription request. tokens, and transfer the N tokens from the fund wallet address to the wallet address of the buyer-side host, and store the number of N tokens and the wallet address of the buyer-side host in the shareholder register , where N is a positive integer

Step 250: When the fund-end host receives a transfer request including a source wallet address, a destination wallet address and a transfer amount, it simultaneously executes the subscription function and the redemption function of the smart contract, wherein, in When the subscription function is executed, M tokens corresponding to the transfer amount are generated, the M tokens are transferred to the destination wallet address, and the number of M tokens and the destination wallet address are stored in the Register of shareholders, and when executing the redemption function, the M tokens corresponding to the transferred amount are destroyed from the source wallet address, where M is a positive integer

Step 260: When the fund-side host receives a selling request from a seller-side host, and the fund-side host has the subscription request from the buyer-side host, the fund-side host compares a second price message of the sale request with the subscription request. The first price information of When executing the subscription function and the redemption function, the tokens equivalent to the second price message are destroyed from the wallet address of the seller's host, and the tokens equivalent to the second price are sent from the fund wallet address. The tokens equivalent to the message are transferred to the wallet address of the buyer-side host, and the shareholder metadata corresponding to the seller-side host and the corresponding shareholder wallet address in the shareholder list are updated.

Figure 1A is a system block diagram of the tokenized open-end fund creation and transaction system of the present invention.

Figure 1B is another system block diagram of the tokenized open-end fund creation and trading system of the present invention.

Figure 2A is a method flow chart of the tokenized open-end fund creation and transaction method of the present invention.

Figure 2B is another method flow chart of the tokenized open-end fund creation and transaction method of the present invention.

Figure 3 is a schematic diagram of a shareholder register applying the present invention.

Figure 4 is a schematic diagram of applying the present invention to subscribe, transfer and redeem open-end funds.

The embodiments of the present invention will be described in detail below with reference to the drawings and examples, so that the implementation process of how to apply technical means to solve technical problems and achieve technical effects of the present invention can be fully understood and implemented accordingly.

First, before describing the tokenized open-end fund creation and transaction system and method disclosed by the present invention, the environment in which the present invention is applied will be described. The present invention is applied in the environment of the blockchain network, and in This environment publishes smart contracts corresponding to open-end funds. The "smart contract" refers to a computer program that drives the execution of instructions based on established conditions and transmitted information based on the blockchain. Specifically, the smart contract is written through a programming language, such as: Solidity, Serpent, LLL, EtherScript, Sidechain, etc., which can include various functions, events, and parameter states. Etc., for example: subscription function and redemption function.

The following is a further explanation of the tokenized open-end fund creation and trading system of the present invention and its method with the help of diagrams. Please refer to "Figure 1A" first. "Figure 1A" illustrates the tokenized open-end fund creation and trading system of the present invention. The system block diagram of the trading system is applied to the blockchain network 100. This system includes: the fund-side host 110 is used to connect to and access the blockchain network 100. The fund host 110 includes: a creation module 111, a calculation module 112, a subscription module 113 and a transfer module 114. Among them, the creation module 111 is used to publish smart contracts and fund wallet addresses corresponding to open-end funds on the blockchain network 100. The smart contracts include shareholder lists, subscription functions, and redemption functions. In actual implementation, the information of the shareholder register can be stored in the array variables declared by the smart contract. The shareholder register contains shareholder metadata (Metadata) and its corresponding shareholder wallet address, and when executing the smart contract, the smart contract is allowed to Create, read, update or delete shareholder metadata and their corresponding shareholder wallet addresses.

The calculation module 112 is connected to the establishment module 111 to calculate the investment return rate of the open-end fund within a preset fixed period, calculate the performance fee based on the investment return rate, and adjust the token value based on the performance fee. In actual implementation, the fixed time can be one year, three years, five years or any specified period, and the investment return rate of the open-end fund during this period is calculated, such as: 18%, in order to further calculate the payment to the fund manager Performance fees from individuals or fund companies. Then, the token value is adjusted based on the performance fee. For example, if the performance fee is high, the token value will be adjusted lower, because when the fee paid to the fund manager or fund company becomes higher, each equity unit of the fund will If the price remains unchanged, it means that the value of each token will become lower. On the contrary, if the performance fee is low, the value of the token will be increased. In addition, when the price of each equity unit will change, a high performance fee means a high return on investment, that is, each unit of equity will change. The price of an equity unit will rise, so the token value can be adjusted higher. On the contrary, low performance fees mean poor return on investment, so the token value can be adjusted lower.

The subscription module 113 is connected to the calculation module 112, and is used to execute the subscription function of the smart contract when the fund-side host 110 receives the subscription request from the buyer-side host 120, and to execute the subscription function according to the token value and the first price of the subscription request. The message generates N tokens, transfers the N tokens from the fund wallet address to the wallet address of the buyer-side host 120, and stores the number of N tokens and the wallet address of the buyer-side host 120 to shareholders. Roster, where N is a positive integer. In other words, tokens are generated by executing the subscription function when subscribing, and the buyer's information and the number of tokens held are stored as shareholder metadata, and the wallet address of the buyer's host is stored. It is the shareholder wallet address. In actual implementation, when the fund-side host 110 generates tokens, the number of tokens generated and the transaction party information can be stored in the shareholder register as one of the shareholder metadata, and the wallet address or destination wallet of the buyer-side host 120 The address is stored as the shareholder wallet address corresponding to the shareholder metadata, and the generated tokens are transferred from the fund wallet address to the corresponding shareholder wallet address. That is to say, the tokens generated by executing the subscription function will first be stored in the fund wallet address, and then transferred to the corresponding shareholder wallet address. At the same time, the token owner information recorded in the shareholder register (i.e., transaction party information) and its information will be updated. Wallet address.

The transfer module 114 is connected to the calculation module 112 to simultaneously execute the subscription function and redemption function of the smart contract when the fund host 110 receives a transfer request including the source wallet address, destination wallet address and transfer amount, where , when executing the subscription function, generate the corresponding transfer amount of M tokens, transfer the M tokens to the destination wallet address, and store the number of M tokens and the destination wallet address in the shareholder register, And when the redemption function is executed, the corresponding transfer amount of the M tokens is destroyed from the source wallet address, where M is a positive integer. In actual implementation, when you want to transfer tokens, unlike the traditional direct transfer of tokens from the seller to the buyer, the transfer module 114 simultaneously executes the subscription function and The redemption function is used to simulate transactions between buyers and sellers and the transfer of tokens. In this way, some problems can be overcome, such as the lack of a transfer agent. In addition, the method of destroying the tokens can be to transfer the tokens to the black hole address (Eater Address) or execute the destruction function of the smart contract to destroy the tokens.

Next, please refer to "Figure 1B". "Figure 1B" is another system block diagram of the tokenized open-end fund creation and transaction system of the present invention, which is applied to the blockchain network 100. This system includes: Fund The end host 110 is used to connect to and access the blockchain network 100. Compared with "Figure 1A", "Figure 1B" has more seller-side hosts 130. When the fund-side host 110 receives a sale request from the seller-side host 130, and the fund-side host 110 has a subscription from the buyer-side host 120 When requesting, the fund-end host 110 can compare the second price information of the sale request with the first price information of the subscription request. When the comparison matches, execute the subscription function and the redemption function to purchase from the wallet of the end host 120 The address destroys tokens equivalent to the second price information, transfers tokens equivalent to the second price information from the fund wallet address to the wallet address of the seller's host 130, and updates the corresponding buyer's host 120 and seller in the shareholder list The shareholder metadata of the end host 130 and its corresponding shareholder wallet address. For example, assuming that the first price information is "50" and the second price information is also "50", they will be considered consistent when comparing the two. At this time, after tokens equivalent to the second price message “50” are destroyed from the wallet address of the buyer’s host 120 and tokens equivalent to the second price message “50” are generated, these generated tokens are Transfer from the fund wallet address to the wallet address of the seller-side host 130.

It should be noted that in actual implementation, the modules described in the present invention can be implemented in various ways, including software, hardware or any combination thereof. For example, in some implementations, each module can be implemented using software and hardware, or one of them. In addition, the present invention can also be implemented partially or completely based on hardware. For example, one or more modules in the system can be implemented through an integrated circuit chip, System on Chip (SoC), Complex Programmable Logic Device (CPLD), Field Programmable Gate Array (FPGA), etc. are implemented. The invention may be a system, method and/or computer program. The computer program may include a computer-readable storage medium having computer-readable program instructions for causing a processor to implement various aspects of the invention. The computer-readable storage medium may be a tangible device that can hold and store instructions for use by an instruction execution device. equipment. The computer-readable storage medium may be, but is not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: hard disks, random access memory, read-only memory, flash memory, optical disks, floppy disks, and any suitable combination of the above. As used herein, computer-readable storage media is not to be construed as a reference to transient signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (e.g., optical signals through fiber optic cables), or through electrical wires. transmitted electrical signals. In addition, the computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to various computing/processing devices, or downloaded through a network, such as the Internet, a local area network, a wide area network and/or a wireless network to an external computer device or external storage device. Networks may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, hubs and/or gateways. A network card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage on a computer-readable storage medium in each computing/processing device middle. Computer program instructions that perform operations of the present invention may be combination language instructions, instruction set architecture instructions, machine instructions, machine-related instructions, micro-instructions, firmware instructions, or source code or object code written in any combination of one or more programming languages. (Object Code), the programming language includes object-oriented programming language, such as: Common Lisp, Python, C++, Objective-C, Smalltalk, Delphi, Java, Swift, C#, Perl, Ruby With PHP, etc., as well as conventional procedural (Procedural) programming languages, such as: C language or similar programming languages. The computer program instructions may execute entirely on the computer, partly on the computer, as stand-alone software, partly on the client computer and partly on a remote computer, or entirely on the remote computer or server. execute on.

Please refer to "Figure 2A". "Figure 2A" is a method flow chart of the tokenized open-end fund creation and transaction method of the present invention. The steps include: providing the fund-side host 110, and allowing the fund-side host 110 to connect and Access the blockchain network 100 (step 210); the fund host 110 publishes the smart contract and fund wallet address corresponding to the open-end fund on the blockchain network 100. The smart contract includes the shareholder list, subscription function and Redemption function (step 220); the fund host calculates the investment return rate of the open-end fund within a preset fixed period, calculates the performance fee based on the investment return rate, and adjusts the token value based on the performance fee (step 230) ; When the fund-side host 110 receives the subscription request from the buyer-side host 120, it executes the subscription function of the smart contract to generate N tokens based on the first price information and token value of the subscription request, as well as the generated N tokens are transferred from the fund wallet address to the wallet address of the buyer's host 120, and the number of N tokens generated and the wallet address of the buyer's host 120 are stored in the shareholder register, where N is a positive integer (step 240 ); when the fund host 110 receives a transfer request including the source wallet address, destination wallet address and transfer amount, it simultaneously executes the subscription function and redemption function of the smart contract. When executing the subscription function, a corresponding Transfer the number of M tokens, transfer the M tokens to the destination wallet address, and store the number of M tokens and the destination wallet address in the shareholder register, and when executing the redemption function, automatically The source wallet address destroys the corresponding transferred number of M tokens, where M is a positive integer (step 250). Through the above steps, the smart contract corresponding to the open-end fund can be published on the blockchain network 100 through the fund-side host 110. At the same time, the performance fee is calculated and the token value is adjusted according to the investment return rate of the open-end fund, so that when receiving to the buyer's side When the host 120 makes a subscription request, a corresponding number of tokens are generated based on the token value and the subscription request to be transferred to the wallet address of the buyer's host 120 and the shareholder list in the smart contract is updated. When a transfer request is received, a smart transaction is executed at the same time. The subscription function and redemption function of the contract are simulated transfer transactions and are centrally processed by the fund-end host 110 to avoid the use of a transfer agent.

In addition, as shown in "Figure 2B", "Figure 2B" is another method flow chart of the tokenized open-end fund creation and transaction method of the present invention. The difference from "Figure 2A" lies in step 250 Afterwards, when the fund-side host 110 receives a sale request from the seller-side host 130, and the fund-side host 110 has a subscription request from the buyer-side host 120, the fund-side host 110 can compare the second price message of the sale request with the purchase request. When the first price information matches the comparison, the subscription function and the redemption function are executed to destroy the tokens equivalent to the second price information from the wallet address of the selling terminal host 130. The self-fund wallet address will be compared with the third price information. The tokens equivalent to the two price messages are transferred to the wallet address of the buyer's host 120, and the shareholder metadata corresponding to the buyer's host 120 and the seller's host 130 and their corresponding shareholder wallet addresses in the shareholder list are updated (step 260).

The following description is given in the form of an embodiment in conjunction with "Figure 3" and "Figure 4". Please refer to "Figure 3" first. "Figure 3" is a schematic diagram of the shareholder register applying the present invention. In actual implementation, the shareholder register 300 may contain shareholder metadata and their corresponding shareholder wallet addresses. Among them, shareholder metadata can be shareholder personal information, identification information or other similar and unique information, such as: unique identification code, ID card number, residence permit number, etc., and also includes tokens holding open-end funds. The number; the shareholder wallet address is the wallet address of the shareholder (that is, the person who holds the tokens of the open-end fund), which is used to identify where the token holder stores the tokens. The shareholder list 300 allows the smart contract to create, read, update or delete shareholder metadata and its corresponding shareholder wallet address when executing a smart contract for subscription, redemption or transfer. For example, in a new It will be created when subscribing; when exiting It will be updated (for example: partial sale/redemption) or deleted (for example: full sale/redemption). In this way, the information of the holders (shareholders) of the open-end fund and the fund shares they hold (i.e., the number of tokens) can be clearly obtained by reading the shareholder register, which facilitates auditing, verification, and cross-checking.

As shown in "Figure 4", "Figure 4" is a schematic diagram of applying the present invention to subscribe, transfer and redeem open-end funds. When a buyer wants to subscribe for an open-end fund, he can open the transaction window 400 through the buyer's host 120 and select the subscription in the selection element 410, then enter the transaction amount in the amount input block 420, and enter the wallet address in the address input block 430. Finally, click OK component 440. At this time, the buyer's host 120 will generate a subscription request based on the above selection and input amount and wallet address, where the input amount will be used as the first price message. Then, the buyer-side host 120 transmits the generated subscription request to the fund-side host 110, and the fund-side host 110 executes the subscription function of the smart contract to generate a corresponding number of tokens based on the token value and the first price information of the subscription request. . For example, assuming that the token value is "5 USD/each" and the first price information is "50 USD", then 10 tokens will be generated and these 10 tokens will be transferred from the fund wallet address to the buyer. The wallet address of the host 120, and the quantity "10" and the wallet address of the buyer's host 120 are stored in the shareholder register. After that, if you want to transfer the open-end funds you already hold, you can also select transfer in the selection element 410 in the transaction window 400, and then enter the number of tokens to be transferred in the amount input block 420, for example: the value "10" , and after entering the wallet address to be transferred to in the address input block 430, click the OK element 440. At this time, the buyer's host 120 will generate a transfer request based on the above selection and the input amount and wallet address. The input amount will be used as the transfer amount, the input wallet address will be used as the destination wallet address, and the buyer's host 120 will The wallet address is used as the source wallet address. Then, the buyer-side host 120 transmits the generated transfer request to the fund-side host 110, and the fund-side host 110 simultaneously executes the subscription function and the redemption function of the smart contract. When executing the subscription function, the corresponding transfer amount is generated. 10 tokens, these 10 tokens The coins are transferred to the destination wallet address, and the quantity "10" and the destination wallet address are stored in the shareholder register, and when the redemption function is executed, the corresponding transferred quantity of 10 tokens is destroyed from the source wallet address. In this way, the transfer can be realized by executing subscription and redemption at the same time to overcome the problem of being unable to transfer when there is no transfer agent. In addition, when you want to sell/redempt open-end funds, you can also select redemption in the selection element 410, enter the amount to be sold (ie: the second price information) in the amount input block 420, and Enter the wallet address holding the token in the address output block. The fund-side host 110 can also compare the second price message of the sale request with the first price message of the subscription request when the fund-side host 110 receives a sale request from the seller-side host 130 and there is a subscription request from the buyer-side host 120 . , when the comparison matches, the subscription function and the redemption function are executed to destroy tokens equivalent to the second price information from the wallet address of the buyer's host 120, and the fund wallet address will be compared with the second price information, etc. The value of the tokens is transferred to the wallet address of the seller-side host 130, and the shareholder metadata corresponding to the seller-side host 130 and its corresponding shareholder wallet address are updated in the shareholder list.

In summary, it can be seen that the difference between the present invention and the prior art is that the smart contract corresponding to the open-end fund is released on the blockchain network through the fund-end host, and at the same time, the performance fee is calculated and adjusted based on the investment return rate of the open-end fund. Token value, so that when receiving a subscription request from the buyer's host, a corresponding number of tokens will be generated based on the token value and the subscription request to be transferred to the wallet address of the buyer's host and update the shareholder list in the smart contract, and when receiving When a transfer request is made, the subscription function and redemption function of the smart contract are executed at the same time to simulate the transfer transaction, which is processed centrally by the fund-end host and avoids the use of transfer agents. This technical means can solve the problems of previous technologies. , thereby achieving the technical effect of improving the convenience, transparency and liquidity of fund transactions.

Although the present invention has been disclosed in the foregoing embodiments, they are not intended to limit the present invention. Anyone skilled in the similar art can make some modifications without departing from the spirit and scope of the present invention. Therefore, the scope of patent protection of the present invention must be determined by the scope of the patent application attached to this specification.

100:Blockchain network

110: Fund end host

111:Create a module

112:Computing module

113:Subscription module

114:Transfer module

120: Buyer-side host

Claims (6)

A tokenized open-end fund creation and transaction system, applied to a blockchain network. The system includes: a fund-end host used to connect to and access the blockchain network. The fund-end host includes: Establish a module for publishing a smart contract and a fund wallet address corresponding to an open-end fund on the blockchain network, where the smart contract includes a shareholder list, a subscription letter and a redemption letter Formula, the shareholder list contains at least one shareholder metadata and its corresponding shareholder wallet address, and when executing the smart contract, the smart contract is allowed to create and read the shareholder metadata and its corresponding shareholder wallet address. Retrieve, update or delete; a calculation module connected to the creation module to calculate an investment return rate of the open-end fund within a preset fixed period, and calculate a performance fee based on the investment return rate, And adjust the value of a token based on the performance fee. When the price of the equity unit of the open-end fund remains unchanged, the value of the token is negatively related to the performance fee. When the price of the equity unit of the open-end fund is allowed to change. When, the token value is positively related to the performance fee; a subscription module is connected to the calculation module to execute the smart contract when the fund-end host receives a subscription request from a buyer-end host The subscription function is used to generate N tokens based on the token value and a first price information of the subscription request, and transfer the N tokens from the fund The wallet address is transferred to the wallet address of the buyer's host, and the number of N tokens and the wallet address of the buyer's host are stored in the shareholder list, where N is a positive integer; and a transfer module is connected The calculation module is used to simultaneously execute the subscription function and the redemption function of the smart contract when the fund host receives a transfer request including a source wallet address, a destination wallet address and a transfer amount. , wherein, when executing the subscription function, M tokens corresponding to the transferred amount are generated, the M tokens are transferred to the destination wallet address, and the number of M tokens and the destination wallet are transferred The address is stored in the shareholder register, and when the redemption function is executed, the M tokens corresponding to the transferred amount are destroyed from the source wallet address, where M is a positive integer; where, the fund host receives When a selling request comes from a seller-side host, and the fund-side host has the subscription request from the buyer-side host, the fund-side host compares a second price message of the sale request with the first price of the subscription request. Messages, when the comparison matches, the fund-side host executes the subscription function and the redemption function to destroy the tokens equivalent to the second price message from the wallet address of the seller-side host. The fund wallet address transfers the tokens equivalent to the second price message to the wallet address of the buyer-side host, and updates the shareholder metadata corresponding to the buyer-side host and the seller-side host in the shareholder register and its corresponding wallet address of the shareholder. For example, the tokenized open-end fund creation and trading system of claim 1, wherein when the fund host generates the tokens, the number of the generated tokens and a transaction party information are stored in the shareholder register as all One of the above shareholder metadata, and store the wallet address of the buyer's host or the destination wallet address as the shareholder wallet address corresponding to the shareholder metadata, and then transfer the generated tokens from the fund wallet address to the corresponding shareholder wallet address. For example, the tokenized open-end fund creation and trading system of claim 1, wherein destroying the token means transferring the token to a black hole address or executing a destruction function of the smart contract to destroy the token. Tokens are destroyed. A tokenized open-end fund creation and transaction method, applied to a blockchain network, the steps include: providing a fund-side host, and allowing the fund-side host to connect to and access the blockchain network; the The fund host publishes a smart contract and a fund wallet address corresponding to an open-end fund on the blockchain network. The smart contract includes a shareholder list, a subscription function and a redemption function. The shareholder The roster contains at least one shareholder metadata and its corresponding shareholder wallet address, and when executing the smart contract, the smart contract is allowed to create, read, update or update the shareholder metadata and its corresponding shareholder wallet address. Delete; the fund host calculates an investment return rate of the open-end fund within a preset fixed period, calculates a performance fee based on the investment return rate, and adjusts the value of a token based on the performance fee, where, when The interest in the open-end fund When the price of the unit remains unchanged, the token value is negatively correlated with the performance fee. When the price of the equity unit of the open-end fund is allowed to change, the token value is positively correlated with the performance fee; when the fund host When receiving a subscription request from a buyer's host, execute the subscription function of the smart contract to generate N tokens based on the token value and a first price message of the subscription request, and transfer the N tokens are transferred from the fund wallet address to the wallet address of the buyer-side host, and the number of N tokens and the wallet address of the buyer-side host are stored in the shareholder register, where N is a positive integer; When the fund-side host receives a sale request from a seller-side host, and the fund-side host has the subscription request from the buyer-side host, the fund-side host compares a second price message of the sale request with the When the first price information of the subscription request is matched, the fund-side host executes the subscription function and the redemption function to destroy the second price information from the wallet address of the seller-side host. the tokens, transfer the tokens equivalent to the second price message from the fund wallet address to the wallet address of the buyer-side host, and update the shareholder list corresponding to the buyer-side host and the seller-side The shareholder metadata of the host and its corresponding shareholder wallet address; and when the fund-side host receives a transfer request containing a source wallet address, a destination wallet address and a transfer amount, it simultaneously executes the smart contract The subscription function and the redemption function, wherein when executing the subscription function, M tokens corresponding to the transfer amount are generated, and the M tokens are transferred to the destination wallet address, and store the number of M tokens and the destination wallet address in the shareholder register, and when executing the redemption function, destroy the corresponding transferred number of M tokens from the source wallet address. , where M is a positive integer. For example, the tokenized open-end fund creation and transaction method of claim 4, wherein when the fund host generates the tokens, the number of the generated tokens and a transaction party information are stored in the shareholder register as all One of the above shareholder metadata, and store the wallet address of the buyer's host or the destination wallet address as the shareholder wallet address corresponding to the shareholder metadata, and then transfer the generated tokens from the fund wallet address to the corresponding shareholder wallet address. For example, the tokenized open-end fund creation and transaction method of claim 4, wherein destroying the token means transferring the token to a black hole address or executing a destruction function of the smart contract to destroy the token. Tokens are destroyed.