TW201828202A - System for digitizing and trading unquantifiable asset and method thereof - Google Patents

Abstract

A system for digitizing and trading unquantifiable asset and a method thereof are provided. By obtaining an asset contract address corresponding to an asset smart contract by a guaranty server when the guaranty server releases the asset smart contract, obtaining an auction contract address corresponding with an auction smart contract by an auction server when the auction server releases the auction smart contract including the asset contract address and a cutoff condition, setting a buyer address and a bid amount to the auction smart contract through the auction contract address by a buyer client, triggering the asset smart contract through the asset contract address when the cutoff condition is satisfied, and executing trade by the asset smart contract according with one of the buyer addresses selected by the auction smart contract based on the bid amount, the system and the method can improve security of high price object transaction online, and can achieve the effect of reducing cost of money and time of buyer and seller.

Description

System and method for digitizing non-quantitative assets and trading by smart contract

An asset trading system and method thereof, in particular, a system and method for digitizing and trading non-quantitative assets with intelligent contracts.

With the development of technology and the Internet, various traditional behaviors have also been transferred from the actual face-to-face to the Internet. For example, traditional transactions in physical stores have gradually shifted to online shopping. In addition to shopping on various shopping sites, you can also go to the auction site to trade. At present, the auction method provided by the auction website, the most common is that the seller sets the bidding time. Before the bidding time deadline, the buyer with the highest bid is the winner.

Since the buyers and sellers using the auction site usually have not seen each other, the auction items cannot be confirmed. If the amount of the auction item is very large, for example, if the auction item is a high-priced item such as real estate or gold diamond, and there is no professional third-party unit to check in the middle, the buyer and the seller often make the high-priced item online on the auction website due to the problem of trust. The chances are very low. Therefore, the current way of buying and selling high-priced items is still in the traditional way, that is, through impartial third-party units. However, through third-party unit agency, once a successful transaction, the buyer and the seller usually need to pay a third-party fee.

In summary, it can be seen that in the prior art, there has been a long-standing problem of people having no trust in online trading of high-priced items, and therefore it is necessary to propose improved technical means to solve this problem.

In view of the prior art, there is a problem that people have no trust in online trading of high-priced items, and the present invention discloses a system and method for digitizing non-quantitative assets and trading by smart contracts, wherein:

The system for digitizing and non-quantifying assets and trading by smart contract disclosed in the present invention comprises at least: a seller client for obtaining a seller address in a blockchain network; and a custodian server for generating and delivering the trust The asset intelligent contract corresponding to the asset, and the asset smart contract is issued to the blockchain, and the corresponding asset contract address is obtained, wherein the asset smart contract includes the seller address; the trust server is used to receive the storage server. The transmitted asset contract address, and generates an auction smart contract, and is used to issue an auction smart contract to the blockchain and obtain a corresponding auction contract address, wherein the auction smart contract includes the asset contract address and the deadline; at least one The buyer client, the buyer client is used to obtain the buyer address and the auction contract address in the blockchain network, and set the buyer address and the subscript amount in the auction smart contract according to the auction contract address; wherein, when the deadline condition is satisfied At the time, the auction smart contract selects the buyer’s address based on each subscript amount and touches the asset contract address. Intelligent function execution asset transactions contract asset, the asset transfer transaction function be transferred under the standard amount of assets in accordance with the buyer's address is selected.

The method for digitizing a non-quantitative asset and trading the smart contract disclosed in the present invention comprises the steps of: the seller client obtaining the seller address in the blockchain network; and the custodial server generating the asset corresponding to the asset being delivered to the trust The asset smart contract, the asset smart contract is issued to the blockchain, and the corresponding asset contract address is obtained, wherein the asset smart contract includes the seller address; the custodial server transmits the asset contract address to the trust server; the trust server generates the auction Smart contract, issuing an auction smart contract to the blockchain and obtaining the corresponding auction contract address, wherein the auction smart contract includes the asset contract address and the closing condition; the buyer client obtains the buyer address in the blockchain network and The auction contract address, and the buyer address and the subscript amount are set in the auction smart contract according to the auction contract address; when the closing condition is satisfied, if the closing function in the auction smart contract selects the buyer address, the conclusion function is based on the asset The contract address triggers the execution of the asset trading function in the asset smart contract, making the asset Easy transfer function for transfers under the standard amount of the assets according to the buyer address.

The system and method disclosed by the present invention are as above, and the difference from the prior art is that the present invention issues an asset smart contract through a custodial server and obtains a corresponding asset contract address, and the trust server issues an auction including an asset contract address and a deadline. The smart contract to the blockchain and obtain the corresponding auction contract address, the buyer client sets the buyer address and the subscript amount in the auction smart contract according to the auction contract address, and when the closing condition is satisfied, the knot in the auction smart contract The function selects the buyer's address according to the amount of the subscript, and triggers the asset trading function in the asset smart contract according to the asset contract address, so that the asset trading function performs asset trading according to the selected buyer address, thereby solving the problem of the prior art. And can achieve the technical effect of reducing the money and time costs of buyers and sellers.

The features and embodiments of the present invention will be described in detail below with reference to the drawings and embodiments, which are sufficient to enable those skilled in the art to fully understand the technical means to which the present invention solves the technical problems, and The achievable effects of the present invention.

The invention can provide the buyer to subordinate the asset corresponding to the asset smart contract in the auction smart contract. When the closing condition in the auction smart contract is satisfied, the auction smart contract can trigger the asset smart contract to execute the asset transaction and the amount transfer. The assets mentioned in the present invention may be non-quantitative items such as real estate, art, etc., but the invention is not limited thereto.

The smart contract (including the auction smart contract and the asset smart contract) proposed by the present invention is a code that can be executed by a computer, and corresponds to a smart contract address. The smart contract address (including the auction contract address corresponding to the auction smart contract and the asset contract address corresponding to the asset smart contract) proposed by the present invention is a node or a device sufficient to support the blockchain technology. Obtain data containing the corresponding smart contract entity, for example, the value of a variable in a smart contract entity when it is a specific block in the blockchain.

In the following, the system operation of the present invention will be described with reference to the system architecture diagram of the intelligent contract digitalization non-quantitative assets and transactions referred to in the "FIG. 1". As shown in "FIG. 1", the system of the present invention includes a storage server 110, a seller client 120, a buyer client 130, and a trust server 150. The storage server 110, the seller client 120, the buyer client 130, and the trust server 150 may be directly or indirectly connected to the blockchain network.

The vault server 110 can provide a connection to the vendor client 120 and can be connected to the trust server 150. The storage server 110 can be connected to the seller client 120 and/or the trust server 150 via a wired network such as Ethernet or a wireless network such as WiFi or Zigbee, but the invention is not limited thereto.

The custodial server 110 is responsible for generating asset intelligence contracts. The asset smart contract generated by the custodial server 110 corresponds to the asset delivered by the seller to the trust. In general, the custodial server 110 is typically provided by a group, unit, organization, or organization that provides trust in the assets of the seller, but the invention is not limited thereto. In some embodiments, the asset intelligence contract generated by the custodial server 110 may include an address used by the owner of the asset in the blockchain network. In the present invention, the address used by the owner of the asset is referred to as the "seller address".

The custod server 110 can pre-store a plurality of different smart contract templates, and when the asset intelligence contract needs to be generated, select a smart contract template corresponding to the asset from the pre-stored smart contract template according to the type of the asset, and use the selected Smart contract templates generate asset intelligence contracts. Among them, the types of assets mentioned above include, but are not limited to, real estate, real estate, accessories, artworks, and the like. In some embodiments, the custodial server 110 can provide an input seller address and, when using the smart contract template to generate an asset smart contract, add the input seller address to the corresponding location of the smart contract template, so that the generated asset smart contract Contains the seller's address.

It is worth mentioning that the custodial server 110 can generate different asset intelligence contracts for each asset, for example, different asset intelligence contracts for different real estates, and different asset intelligence contracts for different artworks.

The vault server 110 is also responsible for publishing the generated asset smart contracts into the blockchain. In more detail, the vault server 110 can generate a blockchain transaction containing the generated asset smart contract and send the generated blockchain transaction to the blockchain network, in the blockchain network. After receiving the blockchain transaction sent by the custodial server 110, the verification node may create a block containing the asset smart contract in the received blockchain transaction, and send the created block to the blockchain network. Synchronization in the road. When the block sent to the blockchain network is accepted, the block sent to the blockchain network is added to the end of the blockchain, so the asset smart contract contained in the block It can be published to the blockchain.

In some embodiments, the vault server 110 may set the entered seller address to the published asset smart contract after issuing the asset smart contract. That is, the vault server 110 can generate a blockchain transaction containing the entered seller address and send the generated blockchain transaction to the blockchain network, thereby the seller address in the blockchain transaction. Join the blockchain that contains the asset smart contract. Among them, since the process of setting the seller address in the asset smart contract by the deposit server 110 is the same as the issuing asset smart contract, the above is only a brief description.

The vault server 110 is also responsible for obtaining the asset contract address corresponding to the issued asset smart contract while issuing the asset smart contract to the blockchain, and transmitting the obtained asset contract address to the trust server 150. In some embodiments, the vault server 110 may also transfer the acquired asset contract address to the vendor client 120.

The seller client 120 and the buyer client 130 are devices or devices having data input, operation and transmission capabilities, including but not limited to computers, mobile phones, tablets, watches, televisions, digital cameras, multimedia players, navigation devices, vehicles. Use computers, walkmans, computer dictionaries, e-book readers, TV game instruments, handheld game instruments, etc. In addition, the seller client 120 and/or the buyer client 130 may be connected to the trust server 150 via a wired network such as Ethernet or a wireless network such as WiFi or Zigbee, but the invention is not limited thereto. In the present invention, the seller client 120 refers to a device or device operated by an object of possession of an asset (that is, a seller of an asset), and the buyer client 130 refers to a device operated by an object (ie, a buyer) who wants to purchase an asset or device.

The seller client 120 is responsible for obtaining the seller address. In general, the seller client 120 can provide the input seller address or read the seller address from the storage medium (not shown) of the seller client 120, but the invention is not limited thereto.

In some embodiments, the seller client 120 can receive the asset contract address transmitted by the custodial server 110, and can obtain a corresponding asset smart contract from the blockchain according to the received asset contract address, and The obtained seller's address is set in the acquired asset intelligence contract. In addition, the seller client 120 may also obtain the agent address and the auction contract address obtained by the trust server 150, and set the obtained agent in the auction smart contract issued by the trust server 150 according to the obtained auction contract address. address.

That is, the seller client 120 can generate a blockchain transaction containing the obtained seller address and/or agent address, and send the generated blockchain transaction to the blockchain network to thereby block the block. The seller's address and/or agent's address in the chain transaction is added to the blockchain containing the asset's smart contract. The process of setting the seller address and/or the agent address in the asset smart contract by the seller client 120 is the same as that of the custodian server issuing the asset smart contract, so the above is only a brief description.

The buyer client 130 is responsible for obtaining the buyer address. In general, the seller client 120 can provide the input buyer address or read the buyer address from the storage medium (not shown) of the buyer client 130, but the invention is not limited thereto. The address used by the user of the buyer client 130 in the blockchain network is referred to as the "buyer address" in the present invention.

The buyer client 130 is responsible for obtaining the auction contract address obtained by the trust server 150, and obtaining the auction smart contract corresponding to the auction contract address issued by the trust server 150 from the blockchain according to the obtained auction contract address, and Responsible for setting the subscript amount in the acquired auction smart contract. That is, the buyer client 130 can generate a blockchain transaction including the buyer address and the subscript amount, and send the generated blockchain transaction to the blockchain network, thereby the buyer in the blockchain transaction. The address and subscript amount are added to the blockchain containing the auction smart contract to set the subscript amount in the auction smart contract. Among them, since the process of setting the bid amount in the auction smart contract by the buyer client 130 is the same as that of the deposit server issuing the asset smart contract, the above is only a brief description.

In some embodiments, the buyer client 130 may also obtain the agent address in advance, and may set the agent address in the auction smart contract issued by the trust server 150. In general, the buyer client 130 can set the agent address together with the amount of the subscript. The buyer client 130 can provide the user input address of the buyer client 130 to obtain the agent address, but the manner in which the buyer client 130 obtains the agent address is not limited thereto.

The same process as the buyer client 130 setting the subscript amount in the auction smart contract, the blockchain transaction generated by the buyer client 130 may include the buyer address, the subscript amount, and the agent address, thereby the subscript amount and the proxy. The address of the person is set in the auction smart contract. However, the present invention is not limited thereto, and the buyer client 130 may separately generate different blockchain transactions including the buyer address and the subscript amount, and the buyer address and the agent address, and sequentially send the two blockchain transactions to In the blockchain network, the subscript amount and the agent address are respectively set in the auction smart contract.

It is worth mentioning that after the buyer client 130 sets the agent address to the auction smart contract issued by the trust server 150, the auction smart contract can trigger the execution of the subscript in the asset smart contract issued by the custodial server 110. The agent function, by which the bid amount set by the buyer client 130 into the auction smart contract is transferred by the buyer account used by the user of the buyer client 130 to the agent account. In more detail, the auction smart contract can be executed when the agent address is set, and the corresponding asset smart contract can be obtained according to the asset contract address contained in the blockchain, and the acquired smart contract can be obtained. In the buyer's address, the agent's address, and the subscript amount, and then take the buyer's address, the agent's address, and the subscripted amount as parameters, call the subscript agent function in the asset smart contract obtained, and so on. The bidding agent function can obtain the corresponding buyer account according to the buyer's address and obtain the corresponding agent account according to the agent's address, and can transfer the subscript amount from the buyer account to the agent account. In some embodiments, the buyer account and the agent account may be account network accounts, and the subscript agent function may complete the transfer of the subscript amount through the smart contract of the call account network, but the subscript agent transfer method is not This is limited to this.

The trust server 150 is responsible for receiving the asset contract address transmitted by the custodial server 110 and for generating an auction smart contract. The auction smart contract generated by the trust server 150 includes the received asset contract address, the knot function, and the cutoff condition. The above cut-off condition is one or more judgment formulas, and each judgment formula may include one or more check values. For example, when the judgment formula is to judge whether the subscript amount meets the settlement amount, the check value is the knot amount, and When the judgment formula is to judge whether the current time exceeds the cutoff time, the check value is the knot time, but the cutoff condition proposed by the present invention is not limited to the above.

The trust server 150 can pre-store the smart contract template and generate an auction smart contract based on the pre-stored smart contract template when an auction smart contract needs to be generated. The deadline condition in the smart contract template stored by the trust server 150 may include the defined check value, and the trust server may add the received asset contract address to the smart contract template, thereby based on the intelligence of the asset contract address. The contract template generates an auction smart contract; the deadline condition in the smart contract template stored by the trust server 150 may not include the check value, and the trust server may separately add the check value and the asset contract address to corresponding positions in the smart contract template. Generate an auction smart contract. However, the manner in which the trust server 150 generates an auction smart contract is not limited to the above.

The trust server 150 is also responsible for publishing the generated auction smart contracts into the blockchain and obtaining the corresponding auction contract address. Like the escrow server 110, the trust server 150 can generate a blockchain transaction containing the generated auction smart contract and send the generated blockchain transaction to the blockchain network so that the auction smart contract is Released into the blockchain, at the same time, the trust server 150 can also obtain the auction contract address corresponding to the auction smart contract issued in the blockchain while publishing the auction smart contract to the blockchain. The process in which the trust server 150 issues the auction smart contract to the blockchain is the same as the process in which the deposit server 110 issues the asset smart contract to the blockchain, and thus is only briefly described.

It is worth mentioning that when the deadline condition in the auction smart contract issued by the trust server 150 is satisfied, the knot function in the auction smart contract can be executed in the blockchain network. In general, blockchain programs cannot provide automatic execution of auction smart contracts, so devices or devices in a blockchain network, such as trust server 150, can drive the closing of an auction smart contract at regular intervals or periodically. The function causes the knot function to be executed in the blockchain network. When the knot function is executed, it can be judged whether the entity with the same knot function is executing or has been executed, or whether the knot function has been executed, and if so, the knot function can be ended. Execution, if not, the knot function can continue to execute. In addition, in the present invention, the blockchain program (such as the private blockchain network) can also be modified so that the knot function in the auction smart contract can be automatically executed.

When the conclusion function in the auction smart contract is executed, the winner can be determined according to all the subscript amounts set in the auction smart contract, and the execution asset can be triggered according to the asset contract address in the blockchain. A smart contract whereby the asset-smart contract is used to conduct asset transactions and amount transfers between the winner and the seller. In more detail, the conclusion function in the auction smart contract can select the highest amount among all the subscript amounts, so as to select the buyer address that is set in the auction smart contract together with the selected subscript amount. The address of the target, and the asset smart contract corresponding to the asset contract address can be obtained from the blockchain according to the asset contract address in the blockchain in which it is located, and the underlying amount to be selected and the selected subscript The amount is also set to the buyer's address in the auction smart contract (described below as "the winner's address") as the parameter to call the asset trading function in the asset smart contract, so that the asset trading function can be used with the asset The seller's address in the smart contract is set as the bidder's address, so that the owner of the asset corresponding to the asset smart contract is transferred from the seller to the bidder. In addition, the asset transaction function can also select the subscript amount. The buyer account corresponding to the winner's address is transferred to the seller account corresponding to the seller's address. The seller account and the buyer account may be accounts of the account network, and the asset transaction function may transfer the subscript amount from the buyer account to the seller account through the smart contract in the account network, but the invention is not limited thereto.

In some embodiments, if the buyer client 130 sets a subscript amount in the auction smart contract, the agent address is also set in the auction smart contract. Then, the knot function in the auction smart contract can call the selected subscript amount, the bidder address, and the proxy address set together with the bidder address as a parameter when triggering the execution of the asset smart contract. The asset trading function in the asset intelligence contract, similar to the above, the asset trading function can set the seller address in the asset smart contract as the bidder address, so that the owner of the asset corresponding to the asset smart contract is owned by the seller. Transferred to the buyer, in addition, the agent transaction function may also transfer the selected subscript amount to the seller account corresponding to the seller address by the agent account corresponding to the agent address set together with the bidder address. Wherein, if the agent account and the seller account are accounts of the account network, the asset transaction function can transfer the subscript amount from the agent account to the seller account through the smart contract in the account network, but the present invention does not limit.

In addition, the closing function in the auction smart contract can also be obtained by the auction smart contract one by one and the bid amount and the agent address set in the auction smart contract together with the buyer address of the non-winner address, and the obtained The subscript amount, the agent address, and the purchased buyer address are used as parameters to call the scale return function in the asset smart contract, so that the scale return function will subscript the amount of the proxy account corresponding to the agent address. Transfer back to the buyer account corresponding to the buyer’s address, in order to transfer the subscript amount from the agent back to the unsuccessful bidder.

In some embodiments, trust server 150 may communicate the acquired auction contract address to vendor client 120.

Next, an operational system and method of the present invention will be described with reference to an embodiment, and reference is made to the flowchart of the method for digitizing non-quantitative assets and trading in a smart contract according to the "2A". In this embodiment, it is assumed that neither the buyer nor the seller trades through the agent.

First, the seller of the asset may first operate the seller client 120 to obtain the seller address used in the blockchain network (step 201). Similarly, the buyer who wants to purchase the asset may first operate the buyer client 130 to obtain the blockchain network. The buyer's address used in the road.

In addition, the seller of the asset may provide all documents of the asset or asset to the trust custodian to deliver the asset to the trust, and the custodial server 110 provided by the trust custodian may generate assets corresponding to the assets provided by the seller to the trust custodian. The smart contract (step 211), and the generated asset smart contract is posted to the blockchain, and at the same time the asset contract address corresponding to the issued asset smart contract is obtained (step 215). In this embodiment, assuming that the asset is a real estate, the asset smart contract generated by the deposit server 110 is an asset smart contract corresponding to the real estate. The storage server 110 can provide the seller address obtained by inputting the seller client 120, and set the seller address as the owner address in the issued asset smart contract, so that the seller address is added to the asset included in the deposit server 110. In the blockchain of smart contracts, the seller is the owner of the asset through the asset smart contract corresponding to the asset.

After the custodial server 110 issues the asset smart contract to the blockchain and obtains the corresponding asset contract address, the custodial server 110 can transmit the obtained asset contract address to the trust server 150.

After the trust server 150 receives the asset contract address transmitted by the custodial server 110, the trust server 150 may generate an auction smart contract (step 221), and issue the generated auction smart contract to the blockchain, and publish The smart contract is auctioned while obtaining the transaction contract address corresponding to the published auction smart contract (step 225). Next, the trust server 150 can set the received asset contract address in the generated auction smart contract to add the received asset contract address to the blockchain containing the auction smart contract. The auction smart contract generated by the trust server 150 further includes a cutoff condition. In this embodiment, it is assumed that the cutoff condition is that the current time is greater than the cutoff time.

Thereafter, the trust server 150 can disclose the obtained auction contract address, so that the buyer can operate the buyer client 130 to obtain the auction contract address, and can subscript the auction smart contract according to the obtained auction contract address, that is, at the auction smart The buyer address and the subscript amount are set in the contract (step 251). In this embodiment, assuming that there are multiple buyers who want to purchase the seller's real estate, the buyer client 130 used by each buyer can obtain the auction smart contract in the blockchain according to the auction contract address disclosed by the trust server 150, and The buyer's address and the subscript amount are added to the blockchain containing the auction smart contract. In this way, the auction smart contract will be able to contain multiple buyer addresses and subscript amounts.

After the trust server 150 publishes the auction smart contract to the blockchain, the auction smart contract can be automatically executed in the blockchain network, and the knot function in the auction smart contract can continuously check the included deadline. Whether the condition is met. In this embodiment, it is determined whether the current time is greater than the deadline. If the cutoff condition is not met, that is, the current time is less than or equal to the cutoff time, the knot function can continue to check the cutoff condition.

And if the deadline condition is satisfied, the knot function may select the buyer address corresponding to the maximum subscript amount from all the subscript amounts set to the auction smart contract, and according to the asset contract address included in the auction smart contract. The asset transaction function in the execution asset intelligence contract is triggered (step 270). In this embodiment, when the knot function judges that the current time is greater than the cut-off time, a maximum subscript amount is selected, and the buyer address that is set in the auction smart contract together with the selected subscript amount is selected as the The bidder's address, and the bidder's address and the selected subscript amount as parameters, call the asset transaction function.

When the asset trading function in the asset intelligence contract is called and started execution, the asset trading function can be based on the bidder address in the call parameter (the buyer address is set to the buyer's address in the auction smart contract together with the subscript amount) Transfer of assets and transfer of subscript amounts (step 285). In this embodiment, the asset transaction function can set the bidder address as the new owner address in the asset smart contract, and transfer the subscript amount from the buyer account corresponding to the bidder address to the account network. The seller account that was originally set to the seller's address in the asset intelligence contract. Thus, through the present invention, asset transactions can be completed online.

In the above embodiment, if the asset intelligence contract restricts the transfer of the asset only through the agent address, after the trust server 150 issues the auction smart contract and obtains the corresponding auction contract address (step 225). The trust server 150 can transmit the obtained auction contract address to the seller client 120, and the seller client 120 can obtain the agent address, and can obtain the corresponding auction from the blockchain according to the received auction contract address. The smart contract, and the agent's address and the seller's address are added to the blockchain containing the auction smart contract, in order to set the agent address in the auction smart contract.

Thus, when the asset transaction function in the asset intelligence contract is triggered and executed, it can be determined whether the address used by the executor in the blockchain network is the same as the agent address set by the seller client 120, and if so, The asset trading function can continue to be executed, that is, the transfer of the asset and the transfer of the subscript amount based on the buyer's address (step 285). If not, the asset trading function will stop executing and the asset transaction will not proceed.

In addition, in the above embodiment, if the buyer client 130 obtains the auction contract address and bids in the auction smart contract according to the obtained auction contract address, the buyer address and the subscript amount are set in the auction smart contract. And the agent address (step 250). Then, as shown in the flow of "Phase 2B", the auction smart contract can trigger the execution of the subscript agent function in the asset smart contract (step 261), that is, the buyer address and the subscript amount to be set in the auction smart contract. And the agent address as a parameter, calling the subscript agent function, so that when the subscript agent function is executed, the subscript amount is transferred from the buyer account corresponding to the buyer address to the agent account corresponding to the agent address ( Step 265).

After that, when the deadline condition in the auction smart contract is satisfied, if the buyer address is selected as the winner's address by the closing function in the auction smart contract, the knot function can select the winner's address and be selected. The target amount and the agent address are used as parameters to call the asset transaction function in the asset intelligence contract, thereby triggering execution of the asset transaction function (step 270). When the asset trading function is executed, the winner's address can be set as the new owner's address of the asset in the asset smart contract, and the subscript amount is transferred from the agent account corresponding to the agent's address to the original through the account network. The seller account corresponding to the seller's address in the asset smart contract.

In addition, after the asset transaction function in the certificate function call asset intelligent contract in the auction smart contract, the present invention can also be called as shown in the flow of the "2C chart", and the knot function can be called in the asset smart contract. The scalar returns a function to trigger execution of the scalar return function (step 291) so that the scalar return function will be set to the underlying bid amount in the auction smart contract together with the unselected bidder address. The selected bidder address is collectively transferred to the buyer account corresponding to the agent address in the auction smart contract and returned to the buyer account corresponding to the unsuccessful bidder address (step 295). In this way, the knot function can complete the asset transaction through the asset smart contract.

In summary, it can be seen that the difference between the present invention and the prior art is that the storage server issues an asset smart contract and obtains a corresponding asset contract address, and the trust server issues an auction smart contract to the area including the asset contract address and the deadline. The corresponding auction contract address is obtained in the blockchain, and the buyer client sets the buyer address and the subscript amount in the auction smart contract according to the auction contract address. When the closing condition is satisfied, the closing function in the auction smart contract is based on The target amount selects the buyer address, and triggers the asset transaction function in the asset smart contract according to the asset contract address, so that the asset transaction function performs the asset transaction technical means according to the selected buyer address, and the prior art can be solved by using a technical means. There is a problem that people have no trust in online trading of high-priced items, and thus achieve the technical effect of reducing the money and time costs of both buyers and sellers.

Furthermore, the method for digitizing non-quantitative assets and trading in smart contracts of the present invention can be implemented in hardware, software or a combination of hardware and software, or can be implemented in a centralized manner in computer systems or distributed by different components. Implemented in a decentralized manner with several interconnected computer systems.

While the embodiments of the present invention have been described above, the above description is not intended to limit the scope of the invention. Any modification of the form and details of the practice of the present invention, which is a matter of ordinary skill in the art to which the present invention pertains, is a patent protection of the present invention. range. The scope of the invention is to be determined by the scope of the appended claims.

110‧‧‧Custody Server

120‧‧‧Seller client

130‧‧‧ Buyer Client

150‧‧‧trust server

Step 201‧‧‧Seller's client obtains the seller's address in the blockchain network

Step 211‧‧ The custodian server generates an asset intelligence contract corresponding to the assets of the delivery trust

Step 215‧‧ The custodian server issues the asset smart contract to the blockchain and obtains the corresponding asset contract address

Step 221‧‧‧The Trust Server generates an auction smart contract with the asset contract address

Step 225‧‧‧ The Trust Server issues the Auction Smart Contract to the blockchain and obtains the corresponding auction contract address

Step 250‧‧‧ The buyer client obtains the auction contract address and sets the buyer address, subscript amount and agent address in the auction smart contract according to the auction contract address.

Step 251‧‧‧ The buyer client obtains the auction contract address and sets the buyer address and the subscript amount in the auction smart contract according to the auction contract address.

Step 261‧‧‧ Auction Smart Contract Trigger Execution Asset Intelligence Contract

Step 265‧‧‧Subscript agent function transfers the subscript amount from the buyer account to the agent account

Step 270‧‧‧ When the closing conditions are met, the closing function in the auction smart contract selects the buyer's address and triggers the execution of the asset trading function in the asset smart contract based on the asset contract address.

Step 285‧‧‧ Asset Trading Function Transfer of Assets and Transfer of Subscript Amount Based on Buyer's Address

Step 291‧‧‧Segment function triggers the execution of the scale return function in the asset smart contract

Step 295‧‧‧The scalar return function transfers the subscript amount from the agent account to the buyer account

Figure 1 is a system architecture diagram of the present invention for digitizing non-quantitative assets and trading in smart contracts. Figure 2A is a flow chart of a method for digitizing non-quantitative assets and trading in smart contracts according to the present invention. FIG. 2B is a flow chart of a method for setting an agent address by a buyer client according to the present invention. Figure 2C is a flow chart of the method for transferring the underlying amount from the agent account back to the buyer account.

Claims (10)

A method for digitizing non-quantitative assets and trading by intelligent contract is applied to a blockchain network, the method comprising at least the following steps: a seller client obtains one of the seller addresses in the blockchain network; A storage server generates an asset intelligence contract corresponding to one of the assets of the delivered trust, issues the asset smart contract to a blockchain, and obtains a corresponding asset contract address, wherein the asset smart contract includes the The seller's address; the custodial server transmits the asset contract address to a trust server; the trust server generates an auction smart contract, issues the auction smart contract to the blockchain, and obtains a corresponding auction contract address, Wherein, the auction smart contract includes the asset contract address and a deadline condition; a buyer client obtains one of the buyer address and the auction contract address in the blockchain network, and according to the auction contract address, the auction smart contract Setting the buyer address and the subscript amount; and when the closing condition is satisfied, if the auction smart contract is When the labeling function selects the buyer address, the labeling function triggers execution of an asset trading function in the asset smart contract according to the asset contract address, so that the asset trading function performs the asset transfer according to the buyer address. Transfer with the amount of the subscript. The method for digitizing and non-quantifying an unquantifiable asset by smart contract as described in claim 1, wherein the method further includes the trust server transmitting the auction contract before the step of obtaining the auction contract address by the buyer client The step of the address to the seller client and the seller client setting an agent address in the auction smart contract according to the auction contract address. The method for digitizing and non-quantifying an unquantifiable asset by a smart contract as described in claim 1, wherein the buyer client sets the subscript amount in the auction smart contract according to the auction contract address, and further includes the step The buyer client sets an agent address in the auction smart contract, so that the auction smart contract triggers execution of a subscript agent function in the asset smart contract, so that the subscript amount is corresponding to the buyer account corresponding to the buyer address The step of transferring the account to one of the agent accounts corresponding to the agent's address. A method for digitizing and trading a non-quantitative asset with a smart contract as described in claim 3, wherein the method further includes, when the cutoff condition is satisfied, if the buyer address is not selected by the check function, The knot function triggers a step of executing a counter return function in the asset smart contract, whereby the subscript amount is transferred from the agent account to the buyer account. For example, in the method of claim 1, the method for digitizing and non-quantifying the non-quantitative assets by the smart contract, wherein the step of transferring the subscript amount by the closing function is to transfer the asset transaction function through the account network. A system for digitizing non-quantitative assets and trading in smart contracts is applied to a blockchain network, the system comprising at least: a seller client for obtaining a seller address in the blockchain network a storage server for generating an asset intelligence contract corresponding to the asset of the delivered trust, and for issuing the asset smart contract to a blockchain and obtaining a corresponding asset contract address, wherein The asset smart contract includes the seller address; a trust server for receiving the asset contract address transmitted by the custodial server, and generating an auction smart contract, and for issuing the auction smart contract to the blockchain And obtaining a corresponding auction contract address, wherein the auction smart contract includes the asset contract address and a cutoff condition; and at least one buyer client, each of the buyer client is used to obtain the blockchain network One of the buyer's address and the auction contract address, and the buyer's address and the amount of the bid are set in the auction smart contract according to the auction contract address; Wherein, when the deadline condition is satisfied, the auction smart contract selects a buyer address according to each of the subscript amounts, and triggers execution of an asset transaction function of the asset smart contract according to the asset contract address, so that the asset transaction letter The transfer of the asset and the transfer of the subscript amount are performed according to the selected buyer address. The system for digitizing non-quantitative assets and trading by smart contract as described in claim 6, wherein the trust server is further configured to transmit the auction contract address to the seller client, and the seller client is further used. An agent address is set in the auction smart contract according to the auction contract address. The system for digitizing non-quantitative assets and trading by smart contract as described in claim 6 of the patent scope, wherein the at least one buyer client is further configured to set an agent address in the auction smart contract to make the auction smart contract Triggering execution of a subscript agent function in the asset smart contract, by which the buyer account set by the at least one buyer client is transferred from the buyer account corresponding to the buyer address obtained by the at least one buyer client to The agent address corresponds to one of the agent accounts. A system for digitizing non-quantitative assets and trading in smart contracts as described in claim 8 of the patent scope, wherein the binding function is further used to call a counter return function in the asset smart contract, thereby obtaining The underlying amount set by the at least one buyer client of the selected buyer address is transferred from the agent account to the buyer account. A system for digitizing non-quantitative assets and trading in smart contracts as described in claim 6 of the patent application, wherein the asset transaction function is to transfer the amount of the subscript through the Internet of Accounts.