82results about How to "Ensure openness and transparency" patented technology

The invention discloses an intelligent investment product collocation method based on the block chain intelligent contract technology. According to the method, the authenticity and non tamperability of the data on the chain are guaranteed by block chain consensus, authentication, timestamp and other technical means, and the participants on the chain can see the same and real information; the intelligent contract is automatically executed without artificial interference and supervision in the process of work can be performed to ensure the interests of customers. Being different from the centralized central registration and settlement mechanism, the system of the invention adopts the distributed technical architecture, the participants jointly maintain the product life cycle, thereby ensuring that the products are open and transparent and credible, effectively reducing the credit risk and avoiding the lack of supervision and risk control, resulting from that the product contents and operation means are opaque, and thus the customer rights and interests are not guaranteed.

The invention discloses an anonymous electronic voting method based on a blockchain technology. According to the anonymous electronic voting method, voting contents are hidden through a homomorphic encryption algorithm, meanwhile, vote validity is ensured through a zero-knowledge proof technology, vote collecting, and the vote counting process and result disclosure are all conducted on a blockchain system, wherein voting results are decrypted through a dependable computing environment, the problem that a private key makes contact with a network in the voting result decrypting process under a traditional way is solved, and the anonymous attribute of voting is protected in the true sense.

The invention discloses a cross-chain transaction method, a cross-chain transaction system and a computer readable storage medium. The cross-chain transaction method is characterized in that for two block chains based on DPoS consensus, the two block chains have a public block producer, a user in one block chain initiates a transaction, and after the transaction is audited and voted by a block producer, funds in an account on one block chain can be transferred to an account of the other block chain in a cross-chain manner. The cross-chain transaction method and system and the computer readablestorage medium are easy to implement, and the cross-chain transaction is simple and convenient.

The invention relates to a real-time audit traceability system based on a blockchain technology. The system comprises a blockchain business network, transaction portals and transaction participators.The transaction participators comprise audited file departments, government and supervision organizations, auditors and common public personnel. According to the system, functions and authority of thetransaction participators are refined; the transaction portals and a temporary transaction portal group are established in case of transaction channels of detailed data information assets of audit files; the authority of the transaction participators is clear; the accuracy and public transparency of audit data are ensured; and the timeliness and accuracy in an audit process are improved.

The invention discloses an information acquisition and authentication system and method based on the Internet of Things and a block chain. the anti-counterfeiting packaging position and the code loading packaging process of the product are acquired through the information acquisition and processing device; position verification is carried out by using the position information; the process video isencrypted and stored through the block chain nodes; A product traceability block chain two-dimensional code printed by an external device serves as a unique information carrier of the identity of each product, an authentication terminal scans the code on the product by adopting the two-dimensional code, and the authenticity is verified by using the scanned two-dimensional code information to be consistent with the code information in the video content; All levels are mutually connected, so that efficient, reliable and low-cost product traceability and proofreading are achieved, and the problems that at present, information anti-counterfeiting is particularly important, however, an anti-counterfeiting system used at present is based on the centralized database technology, data of the anti-counterfeiting system is prone to being tampered, and existing information anti-counterfeiting verification information is single and not tight in verification are solved.

The invention discloses a weakly centralized and trusted data management system and method of a total-score double-chain of a digital bank. The method comprises the following steps of interweaving alltransaction flowing water into a directed transaction network according to the transaction subject and the transaction time; cutting the directed trading network into a general ledger chain and a plurality of account-by-account ledger chains from horizontal and vertical directions respectively; synchronously consolidating the header information of all the sub-ledger chains into a block of the general ledger chain, thereby consolidating the general ledger chain and the sub-ledger chain into a BC chain; inspecting the relevant transaction and account information through chain head verificationand transaction verification to ensure the authenticity of the inspection information. The total-division double-chain structure is adopted, on the premise of maintaining the centralized storage and management of data, the center ensures that the data is open and transparent, has the characteristics of non-tampering and traceability of block chain, and enables all depositors to be supervisors, indirectly auditing the overall accounting data of the system, thereby avoiding the possibility of bank tampering with data and bookkeeping false accounts.

The invention discloses a carbon emission right and green certificate transaction combination system and method based on a block chain, and the method comprises the steps: introducing a notarian mechanism of the block chain into a carbon emission right and green certificate transaction system, carrying out the information interaction, carrying out the information communication on the premise thattwo sets of systems operate independently, and removing the redundant declaration conditions; according to the invention, the green certificate can be automatically approved and issued, the green certificate and carbon emission right transaction can be carried out, the transaction reliability is ensured, the supervision process is simplified, the cross-chain recording is realized, and the repeatedquota in the carbon emission right and green certificate transaction is deducted through the communication of the two transaction systems.

The embodiment of the invention discloses a data processing method, related equipment and a medium. The data processing method comprises: a first client uploading first transaction data to a block chain network; the second client checking the first transaction data in the block chain network and sending the electronic resources and the supporting conditions of the electronic resources to the hosting system, so that the hosting system generates and uploads payment information to the block chain network according to the electronic resources and the supporting conditions; the first client checking and verifying the payment information in the block chain network, and publishing the unlocking parameters in the block chain network after the payment information is successfully verified; after theunlocking parameters are disclosed, the first client taking electronic resources from the hosting system; and the second client using the unlocking parameter to unlock the digital asset. The embodiment of the invention can provide a fair transaction mode, so that the digital assets can be better transacted between the first client and the second client.

The embodiment of the invention discloses a data processing method, related equipment and a medium. The data processing method comprises: uploading first transaction data to a regional chain network,the first transaction data being used for enabling the regional chain network to transfer digital assets of a first client to a second client, and before unlocking parameters of the digital assets arenot disclosed, controlling the digital assets to be in a locked state at the second client; checking payment information uploaded by the hosting system in the block chain network, wherein the paymentinformation is generated according to the electronic resources and the supporting conditions sent by the second client; wherein the payment information comprises a numerical value of the electronic resource and a domination condition, and the domination condition comprises that if the unlocking parameter is disclosed, the first client has the qualification of domination of the electronic resource; and disclosing the unlocking parameters in the block chain network, and taking electronic resources from the hosting system. The embodiment of the invention can provide a fair transaction mode, so that the digital assets can be better transacted between the first client and the second client.

The invention discloses a public welfare project information supervision method, a platform, a system, a device and a medium, comprising the following steps: obtaining and storing the public welfare project information uploaded by a related party of the public welfare project in the file system; converting the public welfare project information into a corresponding hash value through an intelligent contract, and uploading the converted hash value to the block chain; according to the hash value stored on the block chain, the corresponding public welfare project information stored in the file system being publicized. Based on the hash value stored on the block chain, the public benefit item information whose current hash value is consistent with the hash value stored in the block chain is selected from the file system, and the public welfare project information is publicized, so as to ensure that the public welfare project information in the publicized state is the information which is completely consistent with the original public welfare project information content and is not tampered with, that is, the application can ensure the public welfare project information to be open and transparent and prevent the information from being tampered with.

The invention discloses a risk assessment analysis method based on the block chain technology, and relates to the technical field of block chains. The method comprises the following steps of basic data preparation, alliance chain establishment, credit risk analysis, technical risk analysis, operation risk analysis, flowability risk analysis and transaction information verification. The invention relates to a risk assessment analysis method based on a block chain technology, the credit risk, the technical risk. The operation risk and the mobility risk in the regional chain technology application process can be effectively analyzed and evaluated. The information of each member in the supply chain can be known and disclosed. According to the invention, the information is ensured to be publicand transparent. The credit cost is reduced, medium and small enterprises can obtain timely financing and loaning. The development of the medium and small enterprises is facilitated. The fund circulation is greatly improved. The development of suppliers and dealers is promoted in terms of funds. The application safety of the regional chain technology can be greatly improved, and the regional chaintechnology is worth popularizing.

The embodiment of the invention provides a data processing method and system and a terminal. The method is applied to first blockchain node equipment, and comprises the following steps: receiving first fingerprint data sent by a user platform; performing uplink processing on the first fingerprint data; receiving a fairness notification sent by the first server, wherein the fairness notification comprises the first fingerprint data and a first fairness certificate; performing uplink processing on the first fair certificate; and when a judgment request sent by a second server is received, obtaining first fingerprint data and the first fairness certificate from the blockchain, and sending the first data fingerprint and the first fairness certificate to the second server. Based on the data processing method provided by the embodiment of the invention, the user platform protocol data or the activity announcement data is stored on the block chain, so that the public transparency and tamper resistance of the data can be ensured, and the user rights and interests can be ensured.

The invention discloses a method for managing digital assets in a private data form after a user loses a blockchain private key, and belongs to the technical field of block chains. The method providesa public and transparent asset recovery mode, which can recover private data to a new address according to pre-stored information after a user loses a private key and ensure that an asset recovery process is private and safe at the same time, and provides a user identity authentication mode based on a hidden third-party account, so that the real identity of the lost person can be verified safelyand reliably. The method is suitable for solving the asset restorability problem of the blockchain system after the private key is lost, and can verify the identity and restore the private data of theuser to the new address in the absence of the private key.

The invention belongs to the technical field of network questionnaire survey, and particularly relates to an anonymous questionnaire survey method based on zero knowledge proof and a block chain. Unbinding of the user identity and the questionnaire filled by the user identity is achieved through zero knowledge proof, an investigation initiator cannot obtain the user information through the submitted questionnaire, and the purpose of hiding the identity information of the investigated user is achieved. And meanwhile, the verification contract deployed on the block chain can ensure that only theuser passing the auditing can submit an effective questionnaire. The processes of questionnaire publishing, questionnaire submitting and the like are deployed on the block chain in a smart contract mode, so that the finally counted questionnaire result is public and credible.

The invention discloses a blockchain technology-based local multi-microgrid power transaction pairing method, and a multi-microgrid is an important component of an energy internet as a novel distributed power generation system. Selection of power generation resources and electric energy transaction have a series of problems of obvious centralization, low fairness and reliability and the like. Aiming at the defects of the micro-grids in real-time power transaction, the invention provides a multi-micro-grid power transaction pairing method based on a blockchain technology, constructs a competitive power spot market of decentralization of a transaction part and multi-seller-multi-buyer, and realizes integration of source-sale. Through the processes of transaction information uploading, matching and encryption and intelligent contract automatic settlement, the ant colony algorithm is utilized to realize random quotation and random pairing of each subject, and multi-target optimization is realized. Unification of power transaction energy flow, information flow and currency flow is realized in the whole process, and reasonable distribution of electric energy resources and openness and transparency of power transaction are ensured.

The invention provides a supply and demand construction method based on vehicles and services. A vehicle and service demand instruction transmitted by a demand side account is received and demand information is pushed to a supply side account; and quotation information transmitted by the supply side account is received, the quotation information meeting the demand conditions set by the demand sideaccount is selected out through screening and the quotation information is pushed to the demand side account. Initiating the demand of the demand side acts as the start, the supply side performs quotation according to the demand, the both sides can perform online negotiation and the both sides use the inquiry or quotation deposit as the guarantee for implementing the result of inquiry and quotation or online negotiation so that the authenticity and the validity of online quotation of the supply side can be guaranteed, the supply side can be effectively guided to judge the buying inclination of the demand side on the basis of whether the demand sides pays the inquiry deposit, the social resource allocation can be optimized, the production and operation activities of the relevant industriescan be arranged according to the demand situation, mismatching between supply and demand can be effectively avoided and the commodity and price information is ensured to be open and transparent.

The invention provides an information auditing method based on a block chain, an information auditing device based on the block chain, electronic equipment and a computer readable storage medium, andbelongs to the technical field of block chains. The method comprises the steps of obtaining to-be-audited information; broadcasting an auditing demand in a block chain, so that other nodes in the block chain provide auditing reference information about the to-be-audited information in response to the auditing demand; receiving auditing reference information sent by the other nodes; determining auditing standard information based on each part of auditing reference information; and auditing the to-be-audited information according to the auditing standard information. According to the invention,the information source of the auditing standard information is more comprehensive, so that the accuracy of information auditing is enhanced, and the information auditing efficiency is improved.

The invention discloses an electronic signing method. The method comprises the following steps of receiving a contract signing request submitted by each participant, wherein the contract signing request comprises an electronic contract about a target signed object; initiating the real-name authentication to each participant according to each contract signing request; when the real name authentication is completed according to the identity information submitted by each participant, calling the network certificate information of each participant; verifying each piece of network certificate information; when the verification passes, binding each piece of identity information with the electronic contract to complete electronic contract signing. According to the electronic signing method, thesigning efficiency can be effectively improved, meanwhile, the public transparency and safety legitimacy of the identities of the participants are guaranteed, responsibilities and benefits of the participants can be conveniently determined according to contracts, and the standard development of a transaction market is facilitated. The invention further discloses an electronic signing device and equipment and a computer readable storage medium which all have the above beneficial effects.

The invention discloses an animal information recording system and device capable of avoiding data modification. The animal information recording system is combined with a mechanical structure of theanimal information recording device, collected data are stored in a data storage device through a data self-destruction device, and then growth information of animals is directly observed through a liquid crystal display device, when the data are modified, the device must be dismounted, and once the device is dismounted, the data self-destruction device is activated, and the data in the data storage device are destroyed; and the animal growth information is prevented from being modified and tracked, the animal information recording device manufactured by the animal information recording systemis utilized to prevent the animal growth information from being modified, an elastic device is fixed to an animal leg and can grow with the animal leg, the length of elastic device can be extended orshortened and adapts to an entire growth cycle without the help of manpower, and in the meantime, longitudinal lines and transverse lines of the device can collaborate to prevent the device from moving and rotating while preventing bruises and infections caused by a foreign matter in a gap and wearing of the animal leg.

The invention discloses a traffic violation reporting excitation method and device based on a block chain, and a medium. The method comprises the steps of obtaining a traffic violation reporting instruction and reporting traffic violation subject identity information; calling public traffic monitoring equipment information based on the reported traffic violation instruction; acquiring a public transport monitoring equipment selection instruction; marking the monitoring information of selected monitoring equipment based on the public traffic monitoring equipment selection instruction to form traffic violation evidence information to be checked; checking the traffic violation evidence information to be checked, judging whether a traffic violation case exists or not, and if yes, forming traffic violation reporting case information from the reported traffic violation subject identity information and the traffic violation evidence information to be checked, and uploading the traffic violation reporting case information to a traffic violation reporting block chain; analyzing the traffic violation reporting case information, and obtaining a violation grade value according to a preset traffic violation grade; and determining an excitation mode to excite a reported traffic violation subject based on a traffic violation reporting smart contract according to the violation level value.

The invention discloses a universal financial system for protecting commercial confidentiality. The universal financial system comprises a user module, a business system module, a plurality of loan institution modules and a joint calculation module, the user module generates a key pair and sends the public key and the user ID to the service system module; the business system module sends the public key and the user ID to the loan institution module; the loan institution module homomorphic encrypts the inquired loan amount of the user to obtain first amount encryption information, and sends thefirst amount encryption information, the user ID and the public key to the joint calculation module; the joint calculation module performs homomorphic encryption on the plurality of parts of first amount encryption information to obtain second amount encryption information and sends the second amount encryption information to the service system module; the business system module sends the secondamount of encrypted information to the user module; and the user module decrypts the second amount encryption information to obtain a total loan amount. According to the universal financial system forprotecting the commercial confidentiality, the total amount of loans of a user in a plurality of loan institutions is inquired through a homomorphic encryption algorithm.

The invention discloses an intellectual property transaction method based on an alliance block chain, and the method comprises the steps that 1, a service provider node provides intellectual properties which can be provided by the service provider node and the value bidding price of the service provider for the intellectual properties to a transaction service provider node, and stores the intellectual properties into the block chain; step 2, the transaction service party node performs quality evaluation on the intellectual property provided by the service provider node, and finally performs quality pricing on the intellectual property; 3, the service demander node provides an intellectual property demand for the transaction service node, sets a threshold value and the weight of the value and the quality, and stores the intellectual property demand into a block chain; and step 4, the intellectual property demand of the service demander node is matched with the intellectual property provided by the service supplier node. It can be ensured that intellectual property transaction information cannot be tampered, and the method is public, transparent and active and traceable, so that thecredibility of intellectual property transaction is improved, and infringement behaviors are also avoided.

The invention discloses a symmetric searchable encryption method based on a PBFT consensus mechanism, and relates to the technical field of data processing methods. The method comprises the following steps: a preparation stage, a retrieval stage, a consensus stage and an updating stage. According to the method, a block chain technology and a searchable encryption technology are combined, so that the disclosure, transparency and traceability of a data retrieval process can be ensured; a symmetric searchable encryption method including data verification, data updating and node behavior supervision is established through an improved PBFT consensus, so that the transaction fairness between the user and the server can be ensured, the one-to-one correspondence between the user retrieval request and the retrieval result provided by the cloud server is ensured, and the method is real and reliable. And the credibility between the user and the cloud server can be effectively improved.

The invention discloses an administrative service data exchange system based on a block chain, and belongs to a multi-department and multi-level administrative service management system. The system comprises a plurality of window servers, a plurality of front approval subsystems, more than one rear approval subsystem and a block chain network. And the front approval subsystem and the rear approvalsubsystem share the approved files to the block chain network, so that government affair data sharing is realized. And the subsequent subsystem can only apply for access permission from the front approval subsystem, so that the data sharing degree of the rear approval subsystem is ensured. The invention further discloses an administrative service data exchange method based on the block chain.

The invention discloses a method for realizing government-bank subsidy fund management by using a block chain, which comprises the following steps of: establishing a block chain account book, storingcontent required to be consensus in a government-bank fund management process, and realizing safe storage and whole-process trace reservation of government-bank fund management information; establishing an intelligent contract, wherein the intelligent contract comprises a financial subsidy contract amount accumulation contract, a beneficiary information completion contract, a beneficiary repeatedsubsidy notification contract and a purchaser information completion contract, and when the block chain account book is updated, automatically updating the intelligent contract; in the subsidy fund distribution process, updating and reading the blockchain account book according to the subsidy fund distribution condition; configuring different authorities for the related participants, so that the related participants supervise, monitor and check the block chain account book to which the participants belong and the intelligent contract information. According to the method and the system providedby the invention, the data consistency of government departments and commercial banks is realized, and the government departments can timely and effectively supervise subsidy fund distribution.

The invention discloses a crowdsourcing construction method for smart contracts based on blockchain, including: 1. Contract Party A signs smart contracts including tasks and rules and publishes them on the main chain of the blockchain; 2. Contracts Party B claims several sub-tasks of the contract according to the contract tasks released by Party A and adds the claim information to the fork chain; 3. The system checks whether all sub-tasks of Party A's contract can be completed by Party B; 4. Party A and Party B The joint signature publishes the smart contract to the main chain of the blockchain, and the contract is automatically executed. The invention openly and transparently monitors the construction process of the contract, and automatically monitors the execution process of the contract; thus, the risks existing in the construction and execution of the crowdsourcing contract can be reduced.

The invention provides a logistics information query method and device, electronic equipment and a storage medium, and relates to the field of logistics, and the method is applied to a private chain of a blockchain, and comprises the steps: receiving privacy information which comprises identity information and a telephone number of a sender, a receiver and / or a logistics person after real-name system authentication; encrypting the private information by adopting a private key to generate encrypted information, and uploading the encrypted information to a public chain; when a query request sentby a user through a public chain is received, comparing the encrypted information on the public chain with the private information on the private chain; and when the comparison result of the encrypted information on the public chain and the private information on the private chain is consistent, decrypting the encrypted information through a public key matched with the private key to obtain corresponding private information, and sending the corresponding private information to the user. Customer information security can be protected and the distribution cost can be reduced.

The invention discloses a virtual power plant random adaptive robust optimization scheduling method considering a block chain technology. The method comprises the steps of constructing a virtual powerplant deterministic model taking optimal overall profit of a virtual power plant as a target according to original data; further considering the uncertainty in the operation process of the virtual power plant, processing the uncertainty of the market electricity price by adopting a stochastic programming method, processing the uncertainty of the photovoltaic output by adopting an adaptive robustmethod, establishing a stochastic adaptive robust scheduling model of the virtual power plant, and solving by optimizing modeling software GAMS; and finally, enabling the virtual power plant aggregator to publish a day-ahead planned output result obtained by optimization to an Ethereum platform through an intelligent contract editor Remix, and sending the result to each distributed energy node.

The invention provides a method and a device for recording a plant supply chain. A plant supply chain is built, the supply chain has the following roles: a plantation, a processing factory, a packaging factory, a dealer, a retailer and a user, five links of planting, production, packaging, distribution and retail are executed in sequence, data generated in each link is recorded into the supply chain, data among network nodes is synchronized in real time, and a trusted account book is provided to realize trusted tracing of plants.

The invention discloses an accounting method and system for block chain shared storage and a computer readable storage medium. The accounting method for block chain shared storage comprises the step of integrating downlink flow of all storage nodes, credit of the storage nodes and complete transmission times of all the storage nodes to carry out contribution statistics. According to the accountingmethod for block chain shared storage, the data exchange times and the exchange amount are considered, and the reliability is high.