WO2020047802A1

WO2020047802A1 - Online auction method and system based on block chain technology

Info

Publication number: WO2020047802A1
Application number: PCT/CN2018/104400
Authority: WO
Inventors: 王李琰; 周才廷; 田保强; 靳子蔚; 靳菲菲
Original assignee: 王李琰
Priority date: 2018-09-06
Filing date: 2018-09-06
Publication date: 2020-03-12

Abstract

The present invention relates to an online auction method and system based on block chain technology. The method comprises the following steps of: a system receives and stores auction registration information input by an auctioneer and auction authentication information input by a public trust organization, and stores same on a block chain; the system creates a bidding contract and a pledge contract on the block chain, and transfers the corresponding margin of the auctioneer to the pledge contract; the system adds registration information of a bidder in the bidding contract, and transfers the corresponding margin of an account of the bidder to the pledge contract; after the bidding starts, the system receives a bidding request of the bidder according to a bidding contract agreement, determines a winning bidder according to the bidding contract agreement, and completes the auction according to the pledge contract. The present invention combines a unique auction process implemented on the basis of three intelligent contracts, and can perform consignment auctioning and automatic bidding auction, thereby improving the fairness and participation of the bidding and effectively improving the transaction rate of an auction target.

Description

Online auction method and system based on blockchain technology

Technical field

The present invention relates to the field of blockchain technology, and more particularly, to an online auction method and system based on blockchain technology.

Background technique

As of 2017, the turnover of the auction industry has exceeded 500 billion yuan for many consecutive years. Among them, online auctions have not only climbed year by year, but the auction categories have also become more and more diverse. It is worth noting that the Chinese auction market has a lot of problems and lot delivery. The problems in the link are still serious. How to better manage and control the pre-shooting and post-shooting delivery links to help solve the problem of streaming and delivery is a pain point that the domestic online auction industry hopes to solve urgently.

In the current online auction technology link, there are the following outstanding problems: most of the lots lack convincing descriptions and supporting documents, and investors cannot judge, leading to oversold; high-value lots require large transactions, and online payment schemes have limited payment methods The auction is opaque, investors cannot judge the authenticity and legitimacy of the source of the higher bid, and there is a risk of unfair bidding.

In the prior art, for example, the publication number is CN107679976A, which was published on February 9, 2018, and is a Chinese invention patent document entitled "A Blockchain-Based Auction Method", which discloses a blockchain-based auction method. , By publishing and trading related information on auction preparation, bidding and payment on the blockchain, providing a way to ensure the fairness of auctions without third-party credit agencies, to ensure that auction results are mandatory, and At the same time, because there is no third-party credit institution involved, a blockchain-based auction method that saves related fair costs is saved. However, this technology mainly solves the issue of impartiality of third-party credit agencies, and cannot solve the above-mentioned outstanding problems in the current auction process.

Summary of the Invention

The technical problem to be solved by the present invention is to provide an online auction method based on the blockchain technology in view of the foregoing defects of the prior art;

An online auction system based on blockchain technology is also provided.

The technical solutions adopted by the present invention to solve its technical problems are:

Construct an online auction method based on blockchain technology, which includes the following steps:

The first step: the system side receives and stores the lottery registration information entered by the auctioneer and the lottery certification information entered by the public trust institution, and stores it on the blockchain;

The second step: the system party creates an auction contract and a pledge contract on the blockchain, and transfers the corresponding amount of deposit of the auction party to the pledge contract;

The third step: the system party adds the registration information of the auctioneer to the auction contract, and transfers the corresponding margin of the auctioneer's account to the pledge contract;

Step 4: After the bidding starts, the system party receives the bidding request of the bidding party according to the bidding contract agreement method, determines the bidding winner according to the bidding contract agreement method, and completes the auction according to the pledge contract.

In the online auction method based on the blockchain technology of the present invention, in the first step, the system party receives the identity information uploaded by the auctioneer, the auctioneer, and the public credit agency, and Check it out;

After the verification is passed, the system party allocates a key pair to the auctioneer, the bidder, and the public credit agency, and the key pair includes a public key and a private key;

The public key is used as a basic input parameter for the auctioneer, the auctioneer, and the public credit institution to generate an account address on the system side;

The private key serves as an identity of the auctioneer, the auctioneer, and the public credit agency.

According to the online auction method based on the blockchain technology of the present invention, in the first step, the lot authentication information includes the lot basic information and lot value evaluation information, and a trusted time is added by the public credit institution Stamp signature.

The online auction method based on the blockchain technology according to the present invention, wherein in the second step, the system party receives a lottery auction contract creation request set by the auctioneer, and the request information is provided by the auctioneer Perform signature confirmation;

After the system party reviews that the auctioneer's account assets meet the auction guarantee amount requirements, the auction contract and the pledge contract are created on the blockchain.

The online auction method based on the blockchain technology of the present invention, wherein in the second step, the auction contract includes an auction rule and a delivery rule.

The online auction method based on the blockchain technology of the present invention, wherein in the third step, the system party receives registration information of the bidder on the auction contract that has not yet started, and the registration information Signed and confirmed by the bidder;

After the system party verifies that the bidder's account assets meet the auction asset requirements, the registration information is added to the bidding contract, and then the corresponding amount of deposit of the bidder's account is transferred to the pledge contract.

In the online auction method based on the blockchain technology of the present invention, in the fourth step, the bid requests are all trusted time signatures made by the bidder.

The online auction method based on the blockchain technology of the present invention, wherein in the fourth step, if the final bid price meets the bidding contract, the pledge contract automatically transfers the bidder's deposit except the winner Return to their account and automatically trigger the delivery rule to start completing the auction;

If the final bid price does not satisfy the bidding contract, the current auction will be auctioned, and the pledge contract will automatically return the deposit to the bidder and the auctioneer, respectively.

The online auction method based on the blockchain technology of the present invention, further comprising the step of: the bidder transfers the transaction price to the pledge contract and deducts the bidder's deposit amount according to the bidding contract;

If the bidder fails to pay the balance in accordance with the delivery rules, the bidder defaults, and all bidder deposits in the pledge contract are automatically transferred to the auctioneer's account.

After the winning bidder pays the balance, the auctioneer delivers the lot according to the delivery rules, and all assets in the pledge contract are transferred to the auctioneer's account;

If the auctioneer cannot deliver the lot, all assets in the pledge contract are automatically transferred to the auctioneer's account.

The online auction method based on the blockchain technology according to the present invention, wherein the bidder chooses whether to use a commission to participate in the auction according to the agreement of the auction contract;

The bidder creates a commission contract on the blockchain when using the commission, or registers with an existing commission contract on the blockchain.

The online auction method based on the blockchain technology of the present invention, wherein a bidding agent is designated in the commission contract, and the designation rule is formulated by the bidder who created the commission contract.

In the online auction method based on the blockchain technology of the present invention, the bidding agent uses a multi-signature method to indicate the agency intention of each client.

The present invention also provides an online auction system based on blockchain technology. According to the foregoing online auction method based on blockchain technology, the system includes:

Identity authentication module: used to identify and authenticate the unique identity information of the participants in the auction;

Payment transaction module: it is used to provide legal digital currency and virtual currency transfer, withdrawal and payment functions in the system platform;

Trusted time signature module: used for trusted time signature of digital information;

Smart contract module: used for smart contract registration, operation, interface encapsulation and invocation, and system-level open contract rule review, transaction interception and filtering functions for breach notification; the smart contract includes bidding contracts, pledge contracts, and commission contracts;

Blockchain platform: used to provide a distributed storage platform with non-tamperable characteristics, used to save identity information, transaction information, and smart contract information, and to provide an operating environment for the smart contract.

The beneficial effect of the present invention is that the present invention uses the blockchain technology and combines the pledge contract and the auction agreement to realize the auction process, and solves the problem of unfair auctions caused by the lack of persuasiveness of the auction lot and the opaque auction process, thereby improving the fairness of the auction Degree, transparency, and effectively increase the transaction rate of the auction target.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the present invention will be further described below with reference to the accompanying drawings and embodiments. The drawings in the following description are only some embodiments of the present invention. For ordinary technicians, other drawings can be obtained based on these drawings without paying creative labor:

1 is a flowchart of an online auction method based on a blockchain technology according to a preferred embodiment of the present invention;

2 is a flowchart of an auctioner of an online auction method based on a blockchain technology according to a preferred embodiment of the present invention;

3 is a flowchart of a bidder of an online auction method based on a blockchain technology according to a preferred embodiment of the present invention;

4 is a flowchart of payment and delivery after the auction ends based on the blockchain technology-based online auction method of a preferred embodiment of the present invention;

FIG. 5 is a principle block diagram of an online auction system based on a blockchain technology according to a preferred embodiment of the present invention.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, a clear and complete description is given below in conjunction with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the present invention, and Not all examples. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without paying any creative effort belong to the protection scope of the present invention.

The process of the online auction method based on the blockchain technology of the preferred embodiment of the present invention is shown in FIG. 1, and referring to FIG. 2 to FIG. 4. The participants in the auction process are: system, auctioneer, public trustee (for For auctioneers who do basic information and value evaluation) and auctioneers, the online auction method includes the following steps:

S01: The system party receives and stores the lottery registration information entered by the auctioneer and the lottery certification information entered by the public trust agency, and stores it on the blockchain;

S02: The system party creates an auction contract and a pledge contract on the blockchain, and transfers the corresponding margin of the auction party to the pledge contract;

S03: The system party adds the registration information of the auctioneer to the auction contract, and transfers the corresponding margin of the auctioneer's account to the pledge contract;

S04: After the auction starts, the system receives the bidding request of the bidder according to the contract agreement, determines the bid winner based on the contract agreement, and completes the auction according to the pledge contract.

This method uses blockchain technology, combined with the implementation of the pledge contract and auction agreement in the auction process, to solve the problem of unfair auction results caused by the lack of persuasiveness of the auction lot and the opaque auction process, thereby improving the fairness and transparency of the auction and effectively improving the auction. Underlying transaction rate.

As shown in Figure 1-4, in the first step, the system party receives and verifies the identity information uploaded by the auctioneer, bidder, and public credit agency; after the verification is passed, the system party verifies the auctioneer, bidder, and public credit agency Party assigns a key pair, which includes a public key and a private key; the public key serves as the basic input parameter for the auctioneer, auctioneer, and public trust institution to generate an account address on the system side; the private key serves as the auctioneer, bidder, and public trust Party identity; by supporting an open identity authentication system, the present invention can effectively reduce user access and learning costs.

As shown in Figure 1-4, in the first step, the lot authentication information includes the lot basic information and lot value evaluation information, and a trusted time stamp signature is added by the public credit institution; solving the lack of persuasiveness of the lot and the opaque auction process The problem of unfair auctions.

As shown in Figure 1-4, in the second step, the system party receives the auction contract creation request set by the auctioneer, and the request information is signed and confirmed by the auctioneer; the system party reviews the auctioneer's account assets to meet the auction guarantee amount requirements Later, auction contracts and pledge contracts are created on the blockchain; auctioneers are audited, and mandatory deposits are paid to reduce the risk of overdrafts.

As shown in Figure 1-4, in the second step, the bidding contract includes the bidding rules and delivery rules; the bidding rules ensure the orderly execution of the bidding process, and the delivery rules guarantee the smooth transaction of the payment after the bidding is over.

As shown in Figure 1-4, in the third step, the system party receives the bidder's registration information on the auction contract that has not started, and the registration information is confirmed by the bidder's signature; after the system party reviews the bidder's account assets to meet the auction asset requirements , Add registration information to the auction contract, and then transfer the corresponding margin of the bidder's account to the pledge contract; review the bidder and force the payment of the deposit to reduce the risk of overdrafts.

As shown in Figure 1-4, in the fourth step, the bidding request is signed by the bidder with a trusted time; each time the bidding is attached with the trusted time signature of the bidder, which facilitates retrospective inquiry and guarantees the fairness of the bidding.

As shown in Figure 1-4, in the fourth step, if the final bid price meets the bidding contract, the pledge contract automatically transfers the bidder's deposit other than the winner to its account, and automatically triggers the delivery rules to start completing the auction; if the final bid If the bidding contract is not satisfied, the current auction will be auctioned, and the pledge contract will automatically return the deposit to the bidder and the auctioneer respectively; the auctioneer and the bidder's security are guaranteed and easy to trace.

As shown in Figure 1-4, it also includes the steps: the bidder transfers the transaction price to the pledge contract and deducts the bidder's deposit according to the bidding contract; if the bidder fails to pay the balance according to the delivery rules, the bidder breaches the contract and pledges the contract All bidders' deposits in the auction will be automatically transferred to the auctioneer's account; mandatory restrictions will be placed on the bidders to prevent random bidding from interfering with normal auctions.

As shown in Figure 1-4, it also includes the steps: after the auctioneer pays the balance, the auctioneer delivers the lot according to the delivery rules, and all assets in the pledge contract are transferred to the auctioneer's account; if the auctioneer cannot deliver the lot, all of the assets in the pledge contract Assets are automatically transferred to the bidder's account; mandatory restrictions are placed on the auctioneer to prevent random auctions from interfering with normal auctions.

As shown in Figure 1-4, the auctioneer chooses whether to use the commission to participate in the auction according to the agreement of the auction contract; when the auctioneer uses the commission, the commissioner creates a commission contract on the blockchain or in the existing commission contract on the blockchain. Registration; convenient for bidders to choose commissioned auctions and automatic auctions.

As shown in Figure 1-4, the bidding agent can be designated in the commission contract, and the designation rules are formulated by the bidder who created the commission contract.

As shown in Figure 1-4, the bidding agent uses a multi-signature method to indicate the agency intention of each client.

Specifically, as shown in FIG. 2, the auctioneer process includes the following steps:

Step S201: Open identity authentication: access authentication or upload real-name authentication information through a third-party authentication platform, the system performs authentication, and the authentication information is stored on the blockchain;

Step S202, digital asset registration: authenticated users transfer funds to the system through bank transfer, online payment, etc., register digital assets for participating in the system auction, and the assets are recorded on the blockchain;

Step S203: Lot information registration: Users who have been authenticated and registered assets can act as auctioneers and import professionally certified lot basic information and evaluation information through a third-party public trust platform and store them on the blockchain for public disclosure;

Step S204: Initiate the auction: the auctioneer sets the bidding rules and delivery rules of the registered bidders, and agrees to transfer the deposit from the digital asset registered by the individual to the pledge contract according to the system rules;

Step S205: The system judges whether the digital asset meets the guarantee amount requirement. If the digital asset does not meet the requirement, the system fails to initiate an auction. If it does, the process proceeds to step S206.

Step S206: The system generates an auction contract according to the auction rules set by the auctioneer, generates a pledge contract according to the delivery rules, and the auctioneer's deposit is transferred to the pledge contract and recorded on the blockchain;

Step S207: Start the auction: when the system time reaches the start time set by the auctioneer in the auction rules, the auction contract starts to receive the auction request;

Step S208: The system determines whether the auction end time is reached. If not, the auction is delayed. The auctioneer can delay the auction end time by selecting according to demand.

Step S209: End the auction: when the system time reaches the end time set by the auctioneer in the auction rules, the auction smart contract stops receiving the auction request.

Specifically, as shown in FIG. 3, the bidder process includes the following steps:

Step S301: Open identity authentication: access authentication or upload real-name authentication information through a third-party authentication platform, the system performs authentication, and the authentication information is stored on the blockchain;

Step S302, digital asset registration: the authenticated user transfers funds to the system through bank transfer, online payment, etc., registers digital assets for participating in the system auction, and the assets are recorded on the blockchain;

Step S303: Auction registration: Users who have been authenticated and registered assets can act as bidders and import professionally certified lot information and evaluation information through a third-party public trust platform and store them on the blockchain for public announcement;

Step S304: The system determines whether the bidding project allows commissioned bidding;

Step S305: If yes, judge again whether to choose to commission the auction;

If yes, go to step S306 to enter the bidding process. Otherwise, go to step S307 to directly determine whether the assets in the entrusted contract or held by the user meet the requirements for the guaranteed amount. If not, the auction registration fails. If it is, then go to step. S308, start bidding;

Entrusted bidding: Create an entrusted contract or join an existing entrusted contract as required, and designate a bidding agent according to the entrusted contract rules, or formulate a bidding rule to automatically bid for the entrusted contract;

Start auction: When the system time reaches the start time set by the auctioneer in the auction rules, the auctioneer participates in the auction by himself or through the contract of entrustment, and sends the auction request to the auction contract;

Step S309: End the auction: When the system time reaches the end time set by the auctioneer in the auction rules, the auctioneer (including the commission contract) stops bidding.

Specifically, as shown in FIG. 4, the payment and delivery process after the auction ends includes the following steps:

Step S401: Determine whether the bid price finally accepted by the auction contract satisfies the auction rules, and if so, refund the auction deposit;

Step S402, the bidding deposit is refunded: the deposits of other bidders except the bidding winner are automatically returned to each account from the pledge contract;

Streaming shots: The bidder and auctioneer deposits in the pledge contract are automatically refunded;

Step S403: payment: the bidder transfers the balance after deducting the pledge deposit into the pledge contract according to the final transaction price;

Step S404: Determine whether the winning bidder delivers the balance according to the delivery rules; if so, the lot is delivered, otherwise the bidder defaults;

Step S405: Delivery of the lot: The auctioneer delivers the lot to the auctioneer in accordance with the delivery rules;

The bidder defaulted: all remaining assets in the pledge contract were transferred to the auctioneer's account;

Step S406: It is judged that the auction method is completed according to the delivery rules. If so, step S407 is performed to transfer all remaining money in the pledge contract to the auctioneer's account, otherwise the auctioneer defaults;

The auctioneer defaulted: All remaining assets in the pledge contract were transferred to the auctioneer's (including the commission contract) account.

As shown in FIG. 5, an online auction system based on blockchain technology is provided. According to the above-mentioned online auction method based on blockchain technology, the online auction system includes:

Identity authentication module 101: used to identify and authenticate the unique identity information of the participants in the auction;

Payment transaction module 102: It is used to provide the transfer and withdrawal of legal digital currency and virtual currency and payment functions in the system platform;

Trusted time signature module 103: used to perform trusted time signature on digital information;

Smart contract module 104: used for smart contract registration, operation, interface encapsulation and invocation, as well as system-level open contract rule review and transaction interception filtering functions for violation prompts;

Blockchain platform 105: It is used to provide a distributed storage platform with immutable characteristics, used to save identity information, transaction information, and smart contract information, and to provide a smart contract operating environment.

The online auction system based on the blockchain technology of the present invention utilizes an open identity authentication system to verify the identities of online auction participants, and three key smart contracts based on the blockchain, namely, auction contract, pledge contract and commission contract, Methods and systems for supporting auctions including British auctions, Dutch auctions, and sealed auctions.

The various concepts involved in the embodiments of the present invention are explained as follows:

Definition of time in the auction process: including but not limited to scalar time in the physical definition and block height as the unit of time calculation. The system can use any time definition method depending on the situation.

The open identity authentication system includes third-party identity authentication and system real-name authentication. It is an authentication process and method that can identify the user's unique identity information, with individuals or organizations as the basic identification unit.

Bidding agreement: A smart contract that supports multi-party signatures during the auction process, stipulates the logical rules in the bidding process, such as the bidding rules, bid winning rules, and delay rules.

Pledge contract: A smart contract that supports multi-party signatures during the auction process, and is used to host digital assets such as security deposits and payment payments of participating parties.

Entrustment contract: A smart contract that supports multi-party signatures during the auction process, used to deposit digital assets such as the deposit and payment of the bidder, and specifies the entrustment rules and bidding rules;

The solution of the present invention uses an open identity authentication system that can access the blockchain to verify the identity of online auction participants, and combines three smart contracts: pledge contract, auction contract and commission contract to realize the auction process, to solve the lack of persuasiveness of the auction lot, The problem of unfair auctions caused by the opaque auction process. By supporting an open identity authentication system, the present invention can effectively reduce user access and learning costs; combined with a unique auction process based on three smart contracts, commissioned auctions and automatic auctions can be performed Auction, so as to increase the fairness and participation of the auction, and effectively increase the auction target auction rate.

More specifically: The content of the bidding rules in the above embodiments includes, but is not limited to, the bidding form, the bidding start time, the starting price, the bidding end time, the minimum bid difference, the target price, the bidder qualification restrictions, whether to allow the bidding of agents and Restricted bidding conditions, etc.

The contents of the entrustment rules include, but are not limited to: the upper limit of the entrusted amount, the upper limit of the acceptable entrustment, the rules for the appointment of entrusted agents, the rules for automatic bidding for entrustment, the rules for the acceptance and cancellation of entrustment, etc.

The detailed auction process of the online auction system based on the blockchain technology of the present invention is as follows:

1. The system uses a tool that supports asymmetric encryption method KEYGEN to generate a key pair: public key SPub and private key SPriv; (SPub, SPriv) = KEYGEN (SEED);

2. Participating parties upload scans and photos of personal identification information, organization registration information, etc. in the system, and the system background performs automatic or manual principal identity authentication, and completes the verification and verification of the identity of natural persons and organization information;

3. After the identity authentication is passed, the parties use asymmetric encryption methods to generate a key pair consisting of a public key and a private key to identify their identity, which are the auctioneer key pair: PPub, PPriv, and the bidder's key pair: JPub. , JPriv, public key key pair TPub, TPriv, of which the public keys PPub, JPub, TPub are used as the basic input parameters for participants to generate account addresses in the system;

4. The auctioneer registers the lot information on the system blockchain. The basic information M and the value evaluation information E of the lot are imported by the third-party public information platform. The imported information includes the trusted time stamp signature TS of the third-party public information organization. TS = sign (M, E, TPub, timestamp), where timestamp is provided by the trusted timestamp service. After import, the information M, E and the signature TS will be stored on the system's blockchain;

5. The auctioneer sets the auction rules ARULE and delivery rules DRULE of the lot, and submits the auction contract creation request AReq to the system. The request information is signed and confirmed by the auctioneer using its private key PPriv: AReq = sign (ARULE, DRULE, PPriv, timestamp);

6. If the auctioneer's account assets meet the auction guarantee amount requirements, the system successfully creates an auction contract PSC: createSC (PPriv, AReq) and a pledge contract ESC: createSC (PPriv, AReq, amount) on the blockchain. The amount of margin is transferred to the pledge contract ESC: transfer (amount, PPub, ESC). Otherwise, the auctioneer fails to initiate the auction;

7. The bidder selects the bidding contract PSC that has not yet started in the system for registration, and the registration information JInfo is confirmed by the bidder using his private key JPriv: PReg = sign (PSC, JPriv, JInfo);

8. The bidder can choose whether to use the commission contract to participate in the auction according to the requirements and the rules of the auction contract PSC. The bidder can choose to create the commission contract DSC on the blockchain itself: createSC (JPriv, ARule, PSC, ESC, amount ), Or register in the existing delegation contract DSC on the blockchain: registerSC (JPriv, DSC, amount). Bidding agents can be designated in the commission contract, and the designation rule DLGRULE is formulated by the bidder who created the commission contract. Bidding agent: delegate (DLGRULE, JPriv1, JPriv2, JPriv3, ...), designate the bidding agent to use a multi-signature method to express the willingness of each client;

9. If the assets of the bidder's account or entrusted contract account meet the auction guarantee amount requirements, the bidder is successfully registered in the bidding contract, and the bidder directly registers: register (PSC, JPriv, timestamp) entrusted contract registration: register (PSC, DSC, timestamp), and transfer the corresponding margin of the auctioneer or commission contract account to the pledged contract ESC. Otherwise, the bidder fails to initiate a bid;

10. When the auction start time STime is reached, bidders can start bidding on their own: bidReq = call (PSC, "bid", bidoption, price, timestamp, JPriv). By entrusting the contract agent, it is assumed that the agent uses the key pair DPub DPriv: bidReq = call (PSC, "bid", bidoption, price, timestamp, DPriv) The bidding or automatic bidding method depends on the bidding method specified in the bidding rules: bitoption = getbitoption (PSC, DPriv);

11. Before the auction end time FTime is reached, the auctioneer may choose to delay the auction end time: postpone (PSC, timestamp, interval, PPriv). During the bidding process, the bidding contract automatically accepts or rejects the bidding according to the bidding rules;

12. When the end of the auction time FTime is reached, the auction contract stops accepting bids, and the winner of the auction is determined according to the auction rules set by the auctioneer winner = ARULE (bidReq1, bidReq2, ..., bidReqn). If the final bid does not meet the bidding rules, the lot will be sold, and the auction contract PSC will call the pledge contract ESC to automatically transfer the deposit to the bidder and auctioneer: internalcall (ESC, “fullescrowrefund”);

13. The bidding contract PSC decides the winning bidder according to the rule ARULE, and the pledge contract ESC automatically transfers the bidder's deposit other than the winning bidder to its account: internalCall (ESC, “escrowrefund”, [(bidders-winner) .pub] ), And automatically trigger subsequent delivery processes;

14. The bidder transfers the balance of the transaction price minus the bidder's deposit to the pledged contract ESC according to the delivery rule DRULE: call (ESC, “pay”, amount, DRULE, PPriv); if the bidder fails to pay the balance according to the delivery rule, If the bidder defaults, all the deposits in the ESC of the pledge contract are automatically transferred to the auctioneer's account: internalCall (ESC, “refund”, PPub);

15. After the auctioneer pays the balance, the auctioneer delivers the lot according to the delivery rule DRULE. After the auctioneer confirms, all assets in the pledge contract ESC are transferred to the auctioneer's account call (ESC, “paid”, PPub, JPriv). Otherwise, the auctioneer defaults and all assets in the pledge contract are automatically transferred to the auctioneer's account call (ESC, “refund”, JPub, SPriv). At this point, the auction process ends.

It should be understood that those skilled in the art can make improvements or changes according to the above description, and all these improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

An online auction method based on blockchain technology is characterized in that it includes the following steps:

The first step: the system side receives and stores the lottery registration information entered by the auctioneer and the lottery certification information entered by the public trust institution, and stores it on the blockchain;

The second step: the system party creates an auction contract and a pledge contract on the blockchain, and transfers the corresponding amount of deposit of the auction party to the pledge contract;

The third step: the system party adds the registration information of the auctioneer to the auction contract, and transfers the corresponding margin of the auctioneer's account to the pledge contract;

Step 4: After the bidding starts, the system party receives the bidding request of the bidding party according to the bidding contract agreement method, determines the bidding winner according to the bidding contract agreement method, and completes the auction according to the pledge contract.
The online auction method based on the blockchain technology according to claim 1, characterized in that, in the first step, the system party receives uploads from the auctioneer, the bidder, and the public trustee. Identity information and verification;

After the verification is passed, the system party allocates a key pair to the auctioneer, the bidder, and the public credit agency, and the key pair includes a public key and a private key;

The public key is used as a basic input parameter for the auctioneer, the auctioneer, and the public credit institution to generate an account address on the system side;

The private key serves as an identity of the auctioneer, the auctioneer, and the public credit agency.
The online auction method based on the blockchain technology according to claim 1, wherein in the first step, the lot authentication information includes the lot basic information and lot value evaluation information, and is provided by the public trust agency Add a trusted timestamp signature.
The online auction method based on the blockchain technology according to claim 1, wherein in the second step, the system party receives a lottery auction contract creation request set by the auctioneer, and the request information is The auctioneer performs signature confirmation;

After the system party reviews that the auctioneer's account assets meet the auction guarantee amount requirements, the auction contract and the pledge contract are created on the blockchain.
The online auction method based on the blockchain technology according to claim 1, wherein in the second step, the auction contract includes an auction rule and a delivery rule.
The online auction method based on the blockchain technology according to claim 1, wherein in the third step, the system party receives registration information of the bidder on the bidding contract that has not yet started, The registration information is confirmed by signature of the bidder;

After the system party verifies that the bidder's account assets meet the auction asset requirements, the registration information is added to the bidding contract, and then the corresponding amount of deposit of the bidder's account is transferred to the pledge contract.
The online auction method based on the blockchain technology according to claim 1, wherein in the fourth step, the bid requests are all trusted time signatures by the bidder.
The online auction method based on the blockchain technology according to claim 1, characterized in that in the fourth step, if the final bid price meets the bidding contract, the pledge contract will automatically exclude the winner except the winner. The bidder's deposit is transferred back to his account, and the delivery rules are automatically triggered to complete the auction;

If the final bid price does not satisfy the bidding contract, the current auction will be auctioned, and the pledge contract will automatically return the deposit to the bidder and the auctioneer, respectively.
The online auction method based on the blockchain technology according to claim 1, further comprising the step of: the bidder transfers the transaction price to the pledge contract and deducts the bidder's deposit amount according to the bidding contract. ;

If the bidder fails to pay the balance in accordance with the delivery rules, the bidder defaults, and all bidder deposits in the pledge contract are automatically transferred to the auctioneer's account.
The online auction method based on the blockchain technology according to claim 1, further comprising the step of: after the auction winner pays the balance, the auctioneer delivers the lot according to the delivery rules, and all of the pledge contracts Transfer of assets to the account of the auctioneer;

If the auctioneer cannot deliver the lot, all assets in the pledge contract are automatically transferred to the auctioneer's account.
The online auction method based on the blockchain technology according to claim 1, wherein the bidder chooses whether to use a commission to participate in the auction according to the agreement of the auction contract;

The bidder creates a commission contract on the blockchain when using the commission, or registers with an existing commission contract on the blockchain.
The online auction method based on the blockchain technology according to claim 11, characterized in that a bidding agent is designated in the commission contract, and the designation rule is formulated by the bidder who created the commission contract.
The online auction method based on the blockchain technology according to claim 12, wherein the bidding agent uses a multi-signature method to indicate the agency intention of each client.
An online auction system based on blockchain technology. The online auction method based on blockchain technology according to claims 1-13, wherein the online auction system includes:

Identity authentication module: used to identify and authenticate the unique identity information of the participants in the auction;

Payment transaction module: It is used to provide the transfer and withdrawal of legal digital currency and virtual currency and the payment function in the system platform;

Trusted time signature module: used for trusted time signature of digital information;

Smart contract module: used for smart contract registration, operation, interface encapsulation and invocation, and system-level open contract rule review, transaction interception and filtering functions for breach notification; the smart contract includes bidding contracts, pledge contracts, and commission contracts;

Blockchain platform: used to provide a distributed storage platform with non-tamperable characteristics, used to save identity information, transaction information, and smart contract information, and to provide an operating environment for the smart contract.