30results about How to "Solve the problem of mutual trust" patented technology

The invention discloses a federated learning method and device based on a block chain. The method comprises the steps: determining the block chain; enabling the coordinator node to create a federatedlearning task according to the model original data sent by each participant node; receiving training data obtained by local training of the participant nodes; sending the to-be-updated parameters to other participant nodes according to the training data, so as to enable the other participant nodes to update own model parameters according to the to-be-updated parameters; and after model training iscompleted, issuing reward resources according to training data provided by each participant node in the training process, and writing rewards into the block chain. Compared with a traditional mode, the mutual trust problem of all parties is effectively solved; all parties participating in federated learning negotiate together to generate a coordinator node, so that the transparency of the processis improved; federated learning whole-process data is recorded in a block chain, so that the traceability of data operation is ensured; all parties are encouraged to actively participate through rewarding resources, and the enthusiasm of participants is improved.

The invention discloses a network connected vehicle accurate accident handling method based on block chain. The implementation process of the method comprises: 1, firstly, through a block chain technology, connecting all participated joints which are associated with accident handling, based on a P2P consensus network, establishing an alliance chain, putting life cycle of accident handling in the block chain to record; through an intelligent terminal on a vehicle accident site, acquiring on-site data and uploading, the participated joints which are associated with accident handling completing accident handling. Compared with the prior art, the network connected vehicle accurate accident handling method based on block chain effectively solves a mutual trust problem of involve parties throughan unified and decentralized method, improves accident responsibility confirmation accuracy rate and handling speed, and provides an accident retroactive function, improves transparency of accident handling process, shortens accident handling time, and saves vehicle accident handling cost.

The invention aims to provide a block chain-based information processing method. The method comprises the steps of obtaining to-be-stored transaction information, wherein the transaction information comprises an abstract of the transaction information; generating an information identifier through the transaction information; packaging the abstract of the transaction information and the informationidentifier to generate block chain data; and disclosing the block chain data in a block chain to provide an information query service. By using the scheme disclosed by the method, the problems that the efficiency is low, the expansibility is poor, the data cannot be shared and the data is maliciously tampered and faked during acquisition and storage of the transaction information in an existing insurance information platform are solved.

The invention relates to the technical field of block chains, intelligent contracts, data crowdsourcing, machine learning and deep learning, in particular to a data annotation crowdsourcing platform system based on an intelligent contract and a crowdsourcing data annotation method. The crowdsourcing data annotation method comprises the steps of separating the data crowdsourcing annotation task from the annotation result quality evaluation task, evaluating annotation data through the trained model, randomly selecting a plurality of annotation data quality inspectors for crowdsourcing evaluation, and determining the data annotation quality by integrating a plurality of evaluation modes. The whole process of the crowdsourcing task is written into the block chain through the block chain infrastructure, the mutual trust of all parties participating in crowdsourcing is achieved, the integrity and the non-tamper performance of behaviors are guaranteed, the data labeling quality is improved toa certain degree, and then the model training efficiency and the model prediction accuracy are improved.

The invention provides a supply chain financial system based on a block chain and a construction method thereof. According to the system, credit overflow of a core enterprise is utilized; real trade is taken as a support; an industrial network of symbiotic development between the core enterprise and the upstream multi-stage supplier is constructed; by relying on platform asset vouchers formed by first-level suppliers for receivable accounts of core enterprises, comprehensive financial services such as fund financing, payment settlement and process optimization are provided for the first-levelsuppliers, all the asset vouchers are stored through block chain nodes, and rapid confirmation and real-time sharing synchronization of all participants of a system platform are achieved. The supply chain financial system based on the block chain technology is realized, the problem of mutual trust among participants such as a core enterprise, a fund party and a factoring party is solved, the credit of the core enterprise can be effectively transferred, and the financing cost of small and medium-sized enterprises is effectively reduced.

The invention relates to a multi-layer blockchain cross-domain authentication method in an Internet of Things application scene, and belongs to the technical field of Internet of Things and blockchains. According to the method, a blockchain identity registration protocol, a cross-domain identity authentication protocol and a node trust degree evaluation method based on delegation proving of rights and interests are used for carrying out distributed node management and security protection on the blockchain in an application scene of the Internet of Things; and when nodes of different blockchains need to carry out cross-chain identity authentication and data exchange, the across-chain trusted identity authentication is carried out by using a public block chain, so that the user privacy and the data security are ensured. The technical scheme includes the contents in the specification. Compared with an original centralized identity authentication mode, the identity authentication efficiency under the distributed application scene of the Internet of Things is improved, the management problem of certificates under a heterogeneous network is solved, and good safety and usability are achieved.

The invention relates to the field of reverse pricing of a buyer, and provides a method and a system for reverse pricing of a buyer based on a block chain. The method comprises the following steps: receiving a buyer element by a first client, generating a buyer contract according to the buyer element, and recording the buyer contract in a block chain, the buyer element comprising a first element and a buyer price, and the first element comprising a to-be-purchased commodity name; receiving a seller element by at least one second client, generating a seller contract according to the seller element, and recording the seller contract in the block chain, the seller element comprising a second element, a seller price, and the second element comprising a to-be-sold commodity name; and judging whether the seller contract read from the block chain conforms to the buyer contract or not by a server, if yes, generating an intelligent contract for concluding a transaction, and recording the intelligent contract in the block chain, and if not, notifying the first client and the second client of a message characterizing the transaction failure. The invention avoids the control right of a centralized system management platform to the transaction between the buyer and the seller.

The invention is applicable to the technical field of computers, and provides a supply chain financial service management platform, which comprises a service management end, an enterprise client in communication connection with the service management end based on a blockchain network, and a financing server; the service management terminal is used for receiving a financing request sent by an enterprise client, constructing a data risk control model based on an intelligent risk control technology according to the credit sample data of the financing server, judging whether financing informationand transaction information of the enterprise client meet a preset credit extension rule or not according to the data risk control model, receiving identification information sent by the enterprise client when a preset credit extension rule is met, and sending a financing instruction carrying the identification information to the financing server. Safe and credible free circulation of business flows, information flows, logistics flows and capital flows on the chain is facilitated, real and credible trade data is provided for financial institutions, and the problem of mutual trust among multi-party participants in existing supply chain finance is solved.

The invention discloses a multi-cloud data center service quality determination method based on a block chain, and belongs to the technical field of cloud computing and block chains. According to themulti-cloud data center service quality confirmation method based on the block chain, a plurality of cloud data center providers establish an alliance chain in a P2P consensus network, the cloud datacenter providers serve as participation nodes to be added into the alliance chain consensus network, the participation nodes cooperate together to achieve consensus, and generation of a new block chain is completed; and the business system runs on a plurality of block chain cloud data centers, records the running service quality data in the block chain of the local cloud data center, and maintainsan account book together through the participation nodes of the local block chain cloud data center. The multi-cloud data center service quality identification method based on the block chain can effectively solve the mutual trust problem among multi-manufacturer data centers, multi-operation data centers and business system operators, and has good popularization and application values.

The invention discloses a medical insurance accurate identification method based on a block chain, and belongs to the technical field of intelligent contracts and block chains. According to the medical insurance accurate identification method based on the block chain, a block chain infrastructure is established in a P2P consensus network through a block chain service provider of a cloud data center, and execution of an intelligent contract and generation of a new block of the block chain are realized through cooperation; the participation nodes of the block chain jointly maintain an account book, and the execution condition of the key medical data intelligent contract in the commercial medical insurance life cycle process is recorded in the account book; health and medical conditions are provided by issuing tokens and enabling insurers to participate in, and medical and health data sharing among participation nodes is completed through a safety channel and anonymization processing. Themedical insurance accurate identification method based on the block chain can effectively solve the mutual trust problem between an insurance company and an insurance applicant, and has good popularization and application values.

The invention discloses a double CA (certificate authority) system which comprises a first certificate system, a second certificate system, interfaces and an account opening business machine. The first certificate system is used for authenticating a first certificate of devices or businesses, the second certificate system is used for authenticating a second certificate of the devices or businesses, the interfaces are used for issuing the first certificate and an authentication certificate to the devices or businesses authenticated by the first certificate system and the second certificate system, the account opening business machine is used for interconnecting the devices or businesses after the interfaces issue the first certificate and the second certificate to the devices or businesses, and the first certificate system and the second certificate system communicate with the account opening business machine through the interfaces. The invention further provides an implementation method of the double CA system. Mutual trust of the certificates is effectively realized, so that the problem of business overlapping is solved, the first certificate and the second certificate are authenticated by the first certificate system and the second certificate system, and interaction of the devices or businesses is facilitated by interconnection of the interfaces and the account opening business machine.

The invention discloses an electronic contract order pledge loan method and device based on a smart contract, and aims to solve the problems that an existing order pledge loan method is nonstandard inorder contract, high in bad loan rate and the like, and brings difficulty to actual implementation of order pledge loan. The blockchain network comprises a plurality of nodes, including a buyer node,a seller node and a financial institution node. The financial institution node receives a loan request sent by a seller node based on a pre-signed electronic contract order, and the electronic contract order comprises digital signatures made by the seller node and the buyer node based on digital certificates of the seller node and the buyer node respectively; based on a preset intelligent contract, the loan request is audited; and whether to issue a loan to the seller node or not is determined according to an audit result of the audit. By constructing a block chain network, identity authentication is carried out on each node, mutual trust among the nodes is guaranteed, and meanwhile, the security of communication data is guaranteed.

The invention discloses a financial collection management system. The system can be divided into system management, automatic case division management, platform management, collection company management, case management, cancel-after-verification management, commission management, repayment management, data management, external access management, homepage management, report management, intelligentcollection, interface management, content management, workbench basic general situation and case information according to functional roles. According to authority roles, the system can be divided into an asset company management platform, a collection company management platform, a collector workbench and a collection company external visit APP. The system is convenient and fast to use, can provide comprehensive process post-loan management service for asset parties, improves the post-loan management efficiency, supports the online and offline work of related business personnel, improves thecollection efficiency, and enhances the analysis and application of historical data in the collection process.

The invention provides a model for value cross-chain transfer between main chain side chains. The method comprises five parts: 1) enabling an intelligent contract running in a side chain to generate achain of a UTXO model as a contract chain through an algorithm and is used for storing and taking out a pass certificate transaction, the transaction unit is a unit of a main chain pass certificate,and price anchoring is carried out on the pass certificates of the two chains in the intelligent contract of the side chain through a bancor protocol; 2) operating the smart contract in the main chain, and storing the root value of each block in the contract chain in the smart contract; 3) issuing Event by an intelligent contract composed of Client, a monitoring chain and a side chain and callinga corresponding interface ; 4) enabling the main chain to run the smart contract of the main chain; and 5) performing intelligent contract of the side chain and an operation side chain. The inventionalso discloses a method for realizing the value cross-chain transfer between the main chain and the side chain, which comprises the following steps that: step 101, a user calls an intelligent contractof the main chain and stores the intelligent contract into the main chain pass to obtain the side chain pass;and step 102, the user calls an intelligent contract start Exit method of the side chain,and exchanges the side chain pass certificate as a main chain pass certificate.

The invention discloses a digital method of marketing rights and interests based on block chain, which is a basic rights and interests platform based on block chain technology. Including: the management end of the equity platform to build the rights and interests of publishers, marketing agents, individual users of the three rights and interests circle; equity issuer, which publishes management rights and interests, confirms the purchasing behavior initiated by the marketing entity, and writes off the rights and interests of individual users; Marketing entity, viewing and purchasing the rightsand interests published by each rights and interests issuer, distributes the rights and interests purchased by the rights and interests issuer to individual users; individual users, query, view the rights and interests of the rights and interests platform, and view their own rights and interests. The invention utilizes the block chain technology to construct a marketing ecological circle of threeroles of an equity issuer, a marketing subject and an individual user, thereby improving the digitalization degree of the equity marketing. Establish different rights and interests according to different customer groups, shorten the marketing chain; and to open up and share rights and interests to meet the needs of more consumers.

The invention discloses a block chain-based aviation material information sharing method, which comprises a block chain constructed based on a fabric system, and mainly comprises the following steps of realizing connection of bottom data at an aviation material information sharing participant by applying a block chain technology, and constructing a block chain network environment; linking the aviation material information sharing participation node into related aviation material information through a block chain at the node; realizing distributed file encrypted storage after aviation materialinformation sharing by applying a nationally-encrypted modified alliance block chain technology; applying the multi-channel characteristic of the block chain; providing technical support for classified management and authority control of aviation materials. According to the invention, the block chain technology is combined with aviation material information sharing, the characteristics of multi-party consensus and trust brought by block chain distributed account books, timestamps, cryptography and chain structures are combined with data non-tampering, real, objective and trust aviation material information sharing is taken as a support, and aviation material sharing ecological construction is provided.

The invention discloses a health insurance insuring method and device based on a block chain, and a medium. The method comprises the steps of acquiring insurance application information sent by an insurance applicant terminal, and according to identity information of an insured person, acquiring health data and / or diagnosis and treatment data of the insured person stored in a third-party main bodyon a health insurance block chain; depending on the type of insurance to be purchased, collecting candidate insurance product information of corresponding insurance types on an insurance network sales platform on the health insurance block chain; based on the health data and / or the diagnosis and treatment data of the insured person and the candidate insurance product information, processing by adopting an association analysis model to obtain recommended insurance product information, and sending the recommended insurance product information to an insurer end; and obtaining an insurance instruction sent by the insurance applicant side, and uploading insurance product information and insurance premium to the digital signature of the insurance applicant side to the health insurance block chain according to the health insurance intelligent contract. And information of an insured person and comparison of insurance products can be obtained truly and accurately.

The invention provides a network telephone processing method and device and a terminal, and relates to the technical field of communication. The method is applied to a called terminal, and comprises the following steps: receiving a message for inviting a network call sent by a calling terminal, the message carrying first signature information and recognition information of the calling terminal, and the first signature information being signature information for signing a message header for inviting the network call; querying a blockchain certificate of the calling terminal according to the recognition information of the calling terminal; and verifying the first signature information according to a public key in a blockchain certificate of the calling terminal, and establishing a network telephone connection with the calling terminal when the verification is passed. According to the scheme provided by the invention, the problem of mutual trust among multiple CAs in the existing networktelephone is solved.

The invention discloses a VANET location privacy protection trust management model based on a block chain, and mainly solves a series of privacy leakage problems possibly encountered when a mobile vehicle requests a location-based service (LBS) from a location service provider (LSP). The method mainly comprises the following three aspects: (1) recording the request information of a moving vehicle by using a block chain to resist external attacks, and proposing a Conflux-based double-chain consensus mechanism, so that the information processing speed is greatly accelerated on the premise of ensuring that the safety performance is not reduced; (2) proposing an improved distributed k anonymous algorithm to prevent the LSP from illegally acquiring personal privacy information of the vehicle from the query request; and (3) designing a trust management model dominated by a roadside unit (RSU) to solve the mutual trust problem of internal members of the anonymous set. The design mode may also reduce the computational burden of the vehicle and reduce the risk of privacy leakage during communication. The model provided by the invention solves various privacy security problems in the LBS process, and can be applied to a large-scale data set.

The invention discloses an insurance exchange warehouse financing system and method based on a block chain, and the system takes bank credit as a carrier, takes a bank acceptance bill as a settlementtool, controls the right of goods through the signing and issuing of a lading bill by a bank under the condition that a supplier commits the purchase, and builds an industrial network for the symbiotic development between the supplier and a downstream dealer. A dealer pays cash deposit to a bank and the bank issues an acceptance bill, comprehensive financial services such as fund financing, payment settlement and process optimization are provided for a downstream dealer, bill information, delivery bill information and cash deposit information are stored through block chain nodes, and rapid confirmation and real-time sharing synchronization of all participants of a system platform are achieved. According to the invention, the insurance exchange warehouse financing based on the blockchain technology is realized, the dealers can purchase in batches to obtain price preferences, and the modes of slack season payment and high-temperature season sales of the dealers are realized.

The invention relates to a multi-layer blockchain cross-domain authentication method under the application scenario of the Internet of Things, belonging to the technical fields of the Internet of Things and the blockchain. This method uses the blockchain identity registration protocol, cross-domain identity authentication protocol, and node trust evaluation method based on entrusted proof of rights and interests to perform distributed node management and security protection on the blockchain in IoT application scenarios. When different blocks When the nodes of the chain need to perform cross-chain identity authentication and data exchange, the public blockchain is used for cross-chain credible identity authentication to ensure user privacy and data security. Programs include etc. Compared with the original centralized identity authentication method, the present invention improves the efficiency of identity authentication in the distributed application scenario of the Internet of Things, solves the problem of certificate management in heterogeneous networks, and has better security and usability.

The invention discloses a method and a system for the identity authentication of an internet user. When website service fulfillment is carried out for the user, an operator network provides a website. The invention discloses a method and a system for the identity authentication of an internet user. When website service fulfillment is carried out for the user, an operator network provides a website server with circuit information of the user. The method comprises the following steps: when the user sends out an authentication message to the website server through the operator network, the operator server with circuit information of the user. The method comprises the following steps: when the user sends out an authentication message to the website server through the operator network, the operator network captures the authentication message sent out by the user, adds the circuit information of the user to the authentication message and sends the authentication message and the circuit informatr network captures the authentication message sent out by the user, adds the circuit information of the user to the authentication message and sends the authentication message and the circuit information of the user to the website server; the website server takes the circuit information of the user out and compares the same with the circuit information of the user preset in the website server, if ion of the user to the website server; the website server takes the circuit information of the user out and compares the same with the circuit information of the user preset in the website server, if the comparing result is consistent, the identity authentication of the internet user is passed. In the invention, because the identity mark of the user is accomplished by operator network equipment, a the comparing result is consistent, the identity authentication of the internet user is passed. In the invention, because the identity mark of the user is accomplished by operator network equipment, an encrypt method and an information format are only known by a cooperated operator and an e-commerce web site, thereby the safety risk during the user business is greatly reduced. A user circuit can nn encrypt method and an information format are only known by a cooperated operator and an e-commerce web site, thereby the safety risk during the user business is greatly reduced. A user circuit can not be fabricated so that the user circuit which carries out business through binding service can not be lost even if a user account is stolen.to be fabricated so that the user circuit which carries out business through binding service can not be lost even if a user account is stolen.

The invention provides a model for value cross-chain transfer between main chain side chains. The method comprises five parts: 1) enabling an intelligent contract running in a side chain to generate achain of a UTXO model as a contract chain through an algorithm and is used for storing and taking out a pass certificate transaction, the transaction unit is a unit of a main chain pass certificate,and price anchoring is carried out on the pass certificates of the two chains in the intelligent contract of the side chain through a bancor protocol; 2) operating the smart contract in the main chain, and storing the root value of each block in the contract chain in the smart contract; 3) issuing Event by an intelligent contract composed of Client, a monitoring chain and a side chain and callinga corresponding interface ; 4) enabling the main chain to run the smart contract of the main chain; and 5) performing intelligent contract of the side chain and an operation side chain. The inventionalso discloses a method for realizing the value cross-chain transfer between the main chain and the side chain, which comprises the following steps that: step 101, a user calls an intelligent contractof the main chain and stores the intelligent contract into the main chain pass to obtain the side chain pass;and step 102, the user calls an intelligent contract start Exit method of the side chain,and exchanges the side chain pass certificate as a main chain pass certificate.

The invention discloses a V2X high-speed fleet self-organizing system based on a blockchain and relates to the blockchain, intelligent contract, cooperation driving, Internet of things and V2X technology field. A V2X technology is used to form the Mesh network of a local area taking a vehicle as a center. Through blockchain and intelligent contract technologies, a temporary fleet building processis written into the blockchain through a blockchain infrastructure. A blockchain distributed account book technology is used to decentralize the characteristic of trust, the whole process of the organization and driving of a cooperation driving fleet is automatically executed through an intelligent contract and is recorded in the blockchain. Compared with a traditional mode, by using the system ofthe invention, through a uniform and decentralized mode, the mutual trust problems of involved parties is effectively solved, mutual trust among temporary fleet vehicles is realized, and the integrity and tamper-resistant performance of a temporary fleet behavior are guaranteed; and the cooperation driving of a high speed fleet is realized, the all party benefits of the temporary fleet are specified, and the reasonable distribution of cost savings is realized.

The invention discloses a chain identifier generation method and device, a chain cluster management method and system and a medium, and relates to the technical field of block chains and a block chain cluster system, hardware comprises a computer readable storage medium and a processor, software comprises at least two block chains, the computer readable storage medium stores a computer program, the processor can execute the computer program. When the computer program is executed, a block chain cluster management method and a block chain identifier generation method can be realized, and according to the management method, each block chain in the chain cluster has a chain identifier with uniqueness in the chain cluster; the hash value of each block is combined with the chain identifier of the block chain to which the block belongs to form an addressing identifier of the block, and the block can be inquired according to the addressing identifier. The block chain identifier generation method comprises the step of generating a chain identifier of each block chain according to a block in the block chain. Therefore, the problem of block hash value collision can be solved, and a chain cluster can be established to solve the problem of multi-chain collaboration.

The invention discloses a digital asset closed clearing method based on a smart contract. The method comprises the steps of 1, deploying a corresponding number of blockchain nodes in advance at each party according to an agreed weight coefficient; forming a relatively closed clearing environment by a system including a bank through a blockchain technology; pre-generating a smart contract on the blockchain, jointly appointing a set of format of blockchain data analysis by all parties, wherein the number of templates is set according to actual business requirements in the format, verifying the asset share held by an asset holder and the share held by the holder on the blockchain by a clearing initiator, generating and calling a blockchain calling instruction after the verification is correct, and executing the smart contract according to rules. According to the digital asset closed clearing method based on the smart contract, digital asset clearing work is completed by utilizing the credible advantage of blockchain natural data, the mutual trust problem in the digital asset clearing process is solved, and meanwhile, the complexity of all systems is reduced.

Embodiments of the present invention relate to the field of communication technologies, and disclose a method, device and computing device for inter-operator call charge transfer settlement. The method includes: a first operator node receiving a call charge transfer request from the first operator to the second operator sent by a user node; the first operator node generating a call charge settlement form according to the transfer call charge request; The first operator node sends the call charge settlement form to one or more other operator nodes in the blockchain network, and the call charge settlement form is stored in the accounting node in the blockchain network. the blockchain network, and when the call charge settlement form meets the conditions, perform call charge transfer in the blockchain network according to the call charge settlement form. The embodiment of the present invention realizes the transfer of telephone charges across operators.

The invention discloses a blockchain-based Internet of Things data sharing method. The method involves the following components or processes: S1) an account system module, user registration, user login, user information and user management; S2) data management, a data providing module, a data request module, a task publishing module, a task execution module, a data query module and a task query module; and S3) right management, data access control, data authorization management, and data release check. The method is based on a mainstream browser, and PCs are applied more and more widely, and therefore, users can use the method very conveniently, and the access threshold of the method is low. Compared with a traditional centralized management data sharing system, a decentralized data sharing system saves a lot of data intermediary costs and solves the security problem of centralized management. The trust-free feature of the blockchain technology can assist in solving the problem of mutual trust between Internet of Things data sharing nodes; and an IPFS (Inter-Planetary File System) is adopted, and therefore, the secure storage of massive data can be realized. The method has high expandability.

The invention provides a node interaction method, a certificate verification method, a device and related equipment. The node interaction method comprises the steps that a first CA node joins a mutual trust alliance, the mutual trust alliance comprises a plurality of CA nodes trust with the first CA node, and a block chain of the mutual trust alliance comprises a real-time CA state tree and root hash values corresponding to all leaf nodes of the CA state tree; each leaf node of the CA state tree comprises a node certificate and a node trust score value of one CA node, and each CA node stores a block chain. Therefore, the terminal can verify the certificate of the CA node in the mutual trust alliance in a Hash tree manner and then verify the legality of the terminal certificates of the other terminals through the certificate of the CA node aiming at certificates issued by other CA nodes in the same mutual trust alliance added to the CA node trusted by the terminal for other terminals. All certificates issued by CA nodes in a mutual trust alliance are trusted, and the mutual trust problem between any CA nodes is solved with low cost.