CN112734429A - Application system and method based on block chain DAPP - Google Patents

Application system and method based on block chain DAPP Download PDF

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Publication number
CN112734429A
CN112734429A CN202110071344.1A CN202110071344A CN112734429A CN 112734429 A CN112734429 A CN 112734429A CN 202110071344 A CN202110071344 A CN 202110071344A CN 112734429 A CN112734429 A CN 112734429A
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module
unit
transaction
output end
input end
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王建军
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Shanghai Chaolian Information Technology Co ltd
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Shanghai Chaolian Information Technology Co ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/382—Payment protocols; Details thereof insuring higher security of transaction
    • G06Q20/3829—Payment protocols; Details thereof insuring higher security of transaction involving key management
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/08—Payment architectures
    • G06Q20/085—Payment architectures involving remote charge determination or related payment systems
    • G06Q20/0855—Payment architectures involving remote charge determination or related payment systems involving a third party
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q20/00—Payment architectures, schemes or protocols
    • G06Q20/38—Payment protocols; Details thereof
    • G06Q20/40—Authorisation, e.g. identification of payer or payee, verification of customer or shop credentials; Review and approval of payers, e.g. check credit lines or negative lists
    • G06Q20/401—Transaction verification
    • G06Q20/4014—Identity check for transactions
    • G06Q20/40145—Biometric identity checks

Abstract

The invention discloses an application system and method based on block chain DAPP, which comprises a control terminal, a transaction system and a security system, wherein the control terminal is in bidirectional connection with the transaction system, the transaction system is in bidirectional connection with the security system, and the security system is in bidirectional connection with the control terminal. This application system and method based on block chain DAPP, through being provided with secret system, cooperation information fills in the module, information center treater, login protection module, transaction information protection module, result display module, emergency treatment module, password unblock module, fingerprint unblock module and face identification module, adopt password unblock, the triple unblock mode of fingerprint unblock and face identification, and the processing of emergency treatment module, thereby make this block chain DAPP's application safer, can avoid revealing of information simultaneously, make operation more convenient, very big improvement the security of platform.

Description

Application system and method based on block chain DAPP
Technical Field
The invention relates to the technical field of DAPP application, in particular to a block chain DAPP-based application system and a block chain DAPP-based application method.
Background
Decentralized application (Dapp) generally refers to an application that runs on a distributed network, the information of participants is safely protected, and decentralized operation is performed by different people through network nodes; from an ethereal point of view, which is a transaction protocol, a contract or set of contracts to be executed according to conditions set on a blockchain, the application must be open-source, most tokens issued by Dapp run autonomously and not under the control of an entity, all data and records must be kept encrypted on the public and decentralized blockchain, the application must generate tokens by means of a standard algorithm or set of standards, it is possible to distribute some or all of the tokens at the beginning of the operation; these tokens must be used according to the needs of the application and any user offering the contribution should be rewarded with the tokens paid by the application.
The application range of the existing DAPP is wide, for example, in the process of currency transaction, the safety and the encryption are always a great problem, the existing DAPP can only carry out open transaction, and some privacy and information can be checked, therefore, the invention provides an application system and method based on block chain DAPP.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an application system and method based on block chain DAPP, which solves the problem that the information is shared but not safe in the currency transaction process of the existing DAPP.
In order to achieve the purpose, the invention is realized by the following technical scheme: an application system based on a block chain DAPP comprises a control terminal, a transaction system and a security system, wherein the control terminal is in bidirectional connection with the transaction system, the transaction system is in bidirectional connection with the security system, the security system is in bidirectional connection with the control terminal, and the security system comprises an information filling module, an information center processor, a login protection module, a transaction information protection module, a result display module, an emergency processing module, a password unlocking module, a fingerprint unlocking module and a face recognition module;
the output end of the information filling module is connected with the input end of the information center processor, the output end of the information center processor is connected with the input end of the login protection module, the output end of the login protection module is connected with the input end of the transaction information protection module, the output end of the transaction information protection module is connected with the input end of the result display module, the output end of the emergency processing module is connected with the input end of the login protection module, the output end of the password unlocking module is connected with the input ends of the login protection module and the transaction information protection module, the output end of the fingerprint unlocking module is connected with the input ends of the login protection module and the transaction information protection module, and the output end of the face recognition module is connected with the input end of the transaction information protection module.
Preferably, the transaction system comprises a user login module, a buyer preview unit, a seller pre-sale unit, a public transaction platform, a buying and selling agreement signing unit, a delivery transaction unit and a transaction center processor, wherein the output end of the user login module is connected with the input ends of the buyer preview unit and the seller pre-sale unit, the output ends of the buyer preview unit and the seller pre-sale unit are connected with the input end of the public transaction platform, the output end of the public transaction platform is connected with the input end of the buying and selling agreement signing unit, the output end of the buying and selling agreement signing unit is connected with the input end of the delivery transaction unit, and the output end of the transaction center processor is connected with the input end of the public transaction platform.
Preferably, the user login module comprises an account login unit and an account registration unit, the account registration unit comprises a data filling module, a real-name authentication module, a credit investigation verification module, a data verification module, a verification passing module and a verification refusing module, and an output end of the data filling module is connected with an input end of the real-name authentication module.
Preferably, the output end of the real-name authentication module is connected with the input end of the credit investigation verification module, the output end of the credit investigation verification module is connected with the input end of the data auditing module, and the output end of the data auditing module is connected with the input ends of the auditing passing module and the auditing returning module.
Preferably, the trade agreement signing unit comprises an agreement browsing unit, an agreement confirmation unit, an agreement signing unit and a transaction protection unit, wherein the output end of the agreement browsing unit is connected with the input end of the agreement confirmation unit, the output end of the agreement confirmation unit is connected with the input end of the agreement signing unit, and the output end of the transaction protection unit is connected with the input end of the agreement signing unit.
Preferably, the delivery transaction unit comprises a pre-transaction module, an order confirmation module, a payment skip module, a payment confirmation module, a delivery confirmation module, a transaction completion module, a short message verification module and a password input module, wherein the output end of the pre-transaction module is connected with the input end of the order confirmation module, the output end of the order confirmation module is connected with the input end of the payment skip module, and the output end of the payment skip module is connected with the input end of the payment confirmation module.
Preferably, the output end of the payment confirmation module is connected with the input end of the delivery confirmation module, the output end of the delivery confirmation module is connected with the input end of the transaction completion module, the output end of the short message verification module is connected with the input end of the password input module, and the output end of the password input module is connected with the input end of the payment confirmation module.
The invention also discloses an application method based on the block chain DAPP, which specifically comprises the following steps:
s1, firstly, logging in through an account logging unit and an account registration unit in a user logging module, wherein the account logging unit comprises a data filling module, a real-name authentication module, a credit investigation verification module, a data verification module, a verification passing module and a verification refusing module, and the data filling module, the real-name authentication module, the credit investigation verification module, the data verification module, the verification passing module and the verification refusing module are used for detecting whether an applicant meets the required credit standard;
s2, after entering the DAPP platform, selecting on the public transaction platform through the operations of the buyer preview unit and the seller pre-sale unit, signing a contract through the electronic trading agreement signing unit, and performing online transaction by using the delivery transaction unit;
s3, in the process of transaction, firstly browsing the protocol browsing unit to confirm the protocol confirming unit, and finally electronically signing by the protocol signing unit, wherein the transaction protecting unit is used for protecting the benefits of both parties, after forming an order, the operation payment of the user is carried out through the payment confirming module, the delivery confirming module, the transaction completion module, the short message verification module and the password input module, and the transaction of both parties can be ensured to be carried out simultaneously, and the platform is used as a third party for switching;
and S4, in all operations, the password, fingerprint and face recognition triple unlocking modes are realized by carrying out confidentiality through a confidentiality system and an emergency processing module, a password unlocking module, a fingerprint unlocking module and a face recognition module, and information of both parties is hidden by a third party to avoid leakage.
Advantageous effects
The invention provides an application system and method based on block chain DAPP. Compared with the prior art, the method has the following beneficial effects:
(1) this application system and method based on block chain DAPP, through being provided with secret system, cooperation information fills in the module, information center treater, login protection module, transaction information protection module, result display module, emergency treatment module, password unblock module, fingerprint unblock module and face identification module, adopt password unblock, the triple unblock mode of fingerprint unblock and face identification, and emergency treatment module's processing, thereby make this block chain DAPP's application safer, can avoid revealing of information simultaneously, make operation convenience more, very big improvement the security of platform.
(2) According to the application system and method based on the block chain DAPP, the user login module is arranged, and the real name authentication module, the credit investigation verification module, the data auditing module, the auditing passing module and the auditing returning module are matched, so that the credibility of a corresponding buyer can be seen, and some transaction accidents are avoided, so that the balance and the civilization of the platform are better.
(3) The application system and method based on the block chain DAPP have the advantages that the delivery transaction unit is arranged, and the delivery transaction unit is matched with the pre-transaction module, the order confirmation module, the payment skip module, the payment confirmation module, the delivery confirmation module, the transaction completion module, the short message verification module and the password input module, so that two parties can conduct bidirectional transaction through a third party, the transaction credibility is ensured, and meanwhile, the operation is smoother.
Drawings
FIG. 1 is a schematic block diagram of a system for applying the DAPP of the present invention;
FIG. 2 is a schematic block diagram of a security system of the present invention;
FIG. 3 is a functional block diagram of a transaction system of the present invention;
FIG. 4 is a functional block diagram of an account registration unit of the present invention;
FIG. 5 is a functional block diagram of a trade agreement signing unit of the present invention;
FIG. 6 is a functional block diagram of a delivery transaction unit of the present invention.
In the figure: 1-control terminal, 2-transaction system, 21-user login module, 211-account login unit, 212-account registration unit, 2121-data filling module, 2122-real name authentication module, 2123-credit investigation verification module, 2124-data auditing module, 2125-auditing passing module, 2126-auditing refusal module, 22-buyer preview unit, 23-seller pre-selling unit, 24-public transaction platform, 25-buying and selling agreement signing unit, 251-agreement browsing unit, 252-agreement confirmation unit, 253-agreement signing unit, 254-transaction protection unit, 26-delivery transaction unit, 261-pre-transaction module, 262-order confirmation module, 263-payment skip module, 264-payment confirmation module, 265-delivery confirmation module, 266-transaction completion module, 267-short message verification module, 268-password input module, 27-transaction center processor, 3-security system, 31-information filling module, 32-information center processor, 33-login protection module, 34-transaction information protection module, 35-result display module, 36-emergency processing module, 37-password unlocking module, 38-fingerprint unlocking module and 39-face recognition module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a block chain DAPP-based application system comprises a control terminal 1, a transaction system 2 and a security system 3, wherein the control terminal 1 is in bidirectional connection with the transaction system 2, the transaction system 2 is in bidirectional connection with the security system 3, the security system 3 is in bidirectional connection with the control terminal 1, and the security system 3 comprises an information filling module 31, an information center processor 32, a login protection module 33, a transaction information protection module 34, a result display module 35, an emergency processing module 36, a password unlocking module 37, a fingerprint unlocking module 38 and a face recognition module 39;
the output end of the information filling module 31 is connected with the input end of the information center processor 32, the output end of the information center processor 32 is connected with the input end of the login protection module 33, the information center processor 32 is an ARM9 series microprocessor, the output end of the login protection module 33 is connected with the input end of the transaction information protection module 34, the output end of the transaction information protection module 34 is connected with the input end of the result display module 35, the output end of the emergency processing module 36 is connected with the input end of the login protection module 33, the output end of the password unlocking module 37 is connected with the input ends of the login protection module 33 and the transaction information protection module 34, the output end of the fingerprint unlocking module 38 is connected with the input ends of the login protection module 33 and the transaction information protection module 34, the output end of the face recognition module 39 is connected with the input end of the transaction information protection module 34, and by, the cooperation information fills in module 31, information center treater 32, login protection module 33, transaction information protection module 34, result display module 35, emergency treatment module 36, password unblock module 37, fingerprint unblock module 38 and face identification module 39, adopt the password unblock, the triple unblock mode of fingerprint unblock and face identification, and emergency treatment module 36's processing, thereby make this block chain DAPP's application safer, can avoid revealing of information simultaneously, make the operation more convenient, very big improvement the security of platform.
Referring to fig. 3, the transaction system 2 includes a user login module 21, a buyer preview unit 22, a seller pre-sale unit 23, a public transaction platform 24, a buying and selling agreement signing unit 25, a delivery transaction unit 26 and a transaction center processor 27, the transaction center processor 27 is an ARM9 series processor, the output ends of the user login module 21 are connected with the input ends of the buyer preview unit 22 and the seller pre-sale unit 23, the output ends of the buyer preview unit 22 and the seller pre-sale unit 23 are connected with the input end of the public transaction platform 24, the output end of the public transaction platform 24 is connected with the input end of the buying and selling agreement signing unit 25, the output end of the buying and selling agreement signing unit 25 is connected with the input end of the delivery transaction unit 26, and the output end of the transaction center processor 27 is connected with the input end of the public transaction platform 24.
Referring to fig. 4, the user login module 21 includes an account login unit 211 and an account registration unit 212, the account registration unit 212 includes a data filling module 2121, an actual name authentication module 2122, a credit investigation module 2123, a data approval module 2124, an approval pass module 2125 and an approval reject module 2126, an output end of the data filling module 2121 is connected to an input end of the actual name authentication module 2122, an output end of the actual name authentication module 2122 is connected to an input end of the credit investigation module 2123, an output end of the credit investigation module 2123 is connected to an input end of the data approval module 2124, output ends of the data approval module 2124 are connected to input ends of the approval pass module 2125 and the approval reject module 2126, and by providing the user login module 21, the actual name authentication module 2122, the credit investigation module 2123, the data approval module 2124, the approval pass module 2125 and the approval reject module 2126, the credibility of the corresponding buying and selling party can be seen, and the occurrence of some transaction accidents is avoided, so that the balance and the civilization of the platform are better.
Referring to fig. 5, the trade agreement signing unit 25 includes an agreement browsing unit 251, an agreement confirmation unit 252, an agreement signature unit 253, and a transaction protection unit 254, wherein an output terminal of the agreement browsing unit 251 is connected to an input terminal of the agreement confirmation unit 252, an output terminal of the agreement confirmation unit 252 is connected to an input terminal of the agreement signature unit 253, and an output terminal of the transaction protection unit 254 is connected to an input terminal of the agreement signature unit 253.
Referring to fig. 6, the delivery transaction unit 26 includes a pre-transaction module 261, an order confirmation module 262, a payment skip module 263, a payment confirmation module 264, a delivery confirmation module 265, a transaction completion module 266, a short message verification module 267, and a password input module 268, an output end of the pre-transaction module 261 is connected to an input end of the order confirmation module 262, an output end of the order confirmation module 262 is connected to an input end of the payment skip module 263, an output end of the payment skip module 263 is connected to an input end of the payment confirmation module 264, an output end of the payment confirmation module 264 is connected to an input end of the delivery confirmation module 265, an output end of the delivery confirmation module 265 is connected to an input end of the transaction completion module 266, an output end of the short message verification module 267 is connected to an input end of the password input module 268, an output end of the password input module 268 is connected, by arranging the delivery transaction unit 26, and matching with the pre-transaction module 261, the order confirmation module 262, the payment skip module 263, the payment confirmation module 264, the delivery confirmation module 265, the transaction completion module 266, the short message verification module 267 and the password input module 268, the two parties can perform bidirectional transaction through a third party, the credibility of the transaction is ensured, and the operation is smoother.
The invention also discloses an application method based on the block chain DAPP, which specifically comprises the following steps:
s1, firstly, log in through the account login unit 211 and the account registration unit 212 in the user login module 21, wherein the login includes a data filling module 2121, a real name authentication module 2122, a credit investigation verification module 2123, a data auditing module 2124, an auditing pass module 2125, and an auditing reject module 2126, and is used for detecting whether the applicant meets the required credit standard;
s2, entering DAPP platform, selecting on the public transaction platform 24 through two-side operation of the buyer preview unit 22 and the seller pre-sale unit 23, signing contract through the electronic buying and selling agreement signing unit 25, and performing online transaction through the delivery transaction unit 26;
s3, in the process of transaction, firstly browsing from the protocol browsing unit 251 to the protocol confirmation unit 252 for confirmation, and finally electronically signing by the protocol signing unit 253, wherein the transaction protection unit 254 is used for protecting the benefits of both parties, after forming an order, the operation payment of the person is carried out through the payment confirmation module 264, the delivery confirmation module 265, the transaction completion module 266, the short message verification module 267 and the password input module 268, and the transactions of both parties can be ensured to be carried out simultaneously, and the platform is used as a third party for switching;
and S4, in all operations, the security system 3 is used for keeping secret, and the emergency processing module 36, the password unlocking module 37, the fingerprint unlocking module 38 and the face recognition module 39 are used for realizing triple unlocking modes of passwords, fingerprints and face recognition, and hiding information of the two parties through a third party to avoid leakage.
And those not described in detail in this specification are well within the skill of those in the art.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (8)

1. An application system based on block chain DAPP, comprising a control terminal (1), a transaction system (2) and a security system (3), wherein the control terminal (1) and the transaction system (2) are connected in a bidirectional manner, the transaction system (2) and the security system (3) are connected in a bidirectional manner, and the security system (3) and the control terminal (1) are connected in a bidirectional manner, characterized in that: the security system (3) comprises an information filling module (31), an information center processor (32), a login protection module (33), a transaction information protection module (34), a result display module (35), an emergency processing module (36), a password unlocking module (37), a fingerprint unlocking module (38) and a face recognition module (39);
the output end of the information filling module (31) is connected with the input end of the information center processor (32), the output end of the information center processor (32) is connected with the input end of the login protection module (33), the output end of the login protection module (33) is connected with the input end of the transaction information protection module (34), the output end of the transaction information protection module (34) is connected with the input end of the result display module (35), the output end of the emergency processing module (36) is connected with the input end of the login protection module (33), the output end of the password unlocking module (37) is connected with the input ends of the login protection module (33) and the transaction information protection module (34), the output end of the fingerprint unlocking module (38) is connected with the input ends of the login protection module (33) and the transaction information protection module (34), and the output end of the face recognition module (39) is connected with the input end of the transaction information protection module (34) .
2. A block chain DAPP-based application system according to claim 1, wherein: the transaction system (2) comprises a user login module (21), a buyer preview unit (22), a seller pre-sale unit (23), a public transaction platform (24), a trading agreement signing unit (25), a delivery transaction unit (26) and a transaction center processor (27), the output end of the user login module (21) is connected with the input ends of a buyer preview unit (22) and a seller pre-sale unit (23), the output ends of the buyer preview unit (22) and the seller pre-sale unit (23) are connected with the input end of a public transaction platform (24), the output end of the public transaction platform (24) is connected with the input end of the trading agreement signing unit (25), the output end of the trade agreement signing unit (25) is connected with the input end of the delivery transaction unit (26), the output end of the trading center processor (27) is connected with the input end of the public trading platform (24).
3. A block chain DAPP-based application system according to claim 2, wherein: the user login module (21) comprises an account login unit (211) and an account registration unit (212), the account registration unit (212) comprises a data filling module (2121), a real-name authentication module (2122), a credit investigation verification module (2123), a data auditing module (2124), an auditing passing module (2125) and an auditing refusing module (2126), and the output end of the data filling module (2121) is connected with the input end of the real-name authentication module (2122).
4. A block chain DAPP-based application according to claim 3, wherein: the real name authentication module (2122) has an output end connected with an input end of an investigation and verification module (2123), the investigation and verification module (2123) has an output end connected with an input end of a data auditing module (2124), and the data auditing module (2124) has an output end connected with input ends of an auditing passing module (2125) and an auditing refusing module (2126).
5. A block chain DAPP-based application system according to claim 2, wherein: the trade agreement signing unit (25) comprises an agreement browsing unit (251), an agreement confirmation unit (252), an agreement signature unit (253) and a transaction protection unit (254), wherein the output end of the agreement browsing unit (251) is connected with the input end of the agreement confirmation unit (252), the output end of the agreement confirmation unit (252) is connected with the input end of the agreement signature unit (253), and the output end of the transaction protection unit (254) is connected with the input end of the agreement signature unit (253).
6. A block chain DAPP-based application system according to claim 2, wherein: the delivery transaction unit (26) comprises a pre-transaction module (261), an order confirmation module (262), a payment skip module (263), a payment confirmation module (264), a delivery confirmation module (265), a transaction completion module (266), a short message verification module (267) and a password input module (268), wherein the output end of the pre-transaction module (261) is connected with the input end of the order confirmation module (262), the output end of the order confirmation module (262) is connected with the input end of the payment skip module (263), and the output end of the payment skip module (263) is connected with the input end of the payment confirmation module (264).
7. A block chain DAPP-based application according to claim 6, wherein: the output end of the payment confirmation module (264) is connected with the input end of the delivery confirmation module (265), the output end of the delivery confirmation module (265) is connected with the input end of the transaction completion module (266), the output end of the short message verification module (267) is connected with the input end of the password input module (268), and the output end of the password input module (268) is connected with the input end of the payment confirmation module (264).
8. An application method based on block chain DAPP is characterized in that: the method specifically comprises the following steps:
s1, firstly, logging in through an account logging unit (211) and an account registration unit (212) in a user logging module (21), wherein the logging in includes a data filling module (2121), a real-name authentication module (2122), a credit investigation verification module (2123), a data verification module (2124), a verification passing module (2125) and a verification refusal module (2126), and the verification refusal module is used for detecting whether an applicant meets the required credit standard;
s2, entering the DAPP platform, selecting on the public transaction platform (24) through the operations of the buyer preview unit (22) and the seller pre-sale unit (23), signing a contract through the electronic buying and selling agreement signing unit (25), and performing online transaction through the delivery transaction unit (26);
s3, in the process of transaction, firstly browsing the agreement from the agreement browsing unit (251) to the confirmation of the agreement confirmation unit (252), and finally electronically signing by the agreement signing unit (253), wherein the transaction protection unit (254) is used for protecting the benefits of both parties, after an order is formed, the operation payment of the person is carried out through the payment confirmation module (264), the delivery confirmation module (265), the transaction completion module (266), the short message verification module (267) and the password input module (268), and the transactions of both parties can be ensured to be carried out simultaneously, and the platform is used as a third party for switching;
and S4, in all operations, the password, the fingerprint and the face recognition triple unlocking mode is realized through the security system (3) and the emergency processing module (36), the password unlocking module (37), the fingerprint unlocking module (38) and the face recognition module (39), and the information of the two parties is hidden through a third party to avoid leakage.
CN202110071344.1A 2021-01-19 2021-01-19 Application system and method based on block chain DAPP Pending CN112734429A (en)

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