8 results about "Management contract" patented technology

The invention discloses a food safety traceability system and method based on a block chain technology, and relates to the technical field of supply chain management, and the system comprises a data collection layer, a block chain network layer, an intelligent contract layer and an application layer. The intelligent contract layer comprises a traceability data contract, a business rule contract, a trusted transaction contract, an authority management contract and an early warning trigger contract; the method comprises the steps of supply chain main body registration and authority configuration, business rule intelligent contract deployment, traceability data acquisition and uplink, business rule automatic verification and execution, credible transaction verification and confirmation, traceability query and credible verification, and abnormity early warning and emergency response. According to the invention, automatic execution and credible transaction verification of the business rules are realized through the smart contract, so that the traceability data cannot be tampered, interconnection and intercommunication of data in each link of the supply chain are realized, real-time early warning of abnormity and rapid emergency response are supported, and the credibility, transparency and efficiency of food traceability are improved.

This invention discloses a blockchain-based smart retail system and method, belonging to the field of supply chain management technology. The system includes: a blockchain network module with a hybrid architecture; a digital identity and asset management module; a smart contract cluster, including commodity traceability management contracts, token points management contracts, data rights management contracts, and supply chain finance contracts; and an application interface layer module. The method includes four steps: commodity traceability, points exchange, data rights trading, and supply chain finance. Through blockchain and smart contract technologies, the system deeply integrates commodity flow, information flow, value flow, and capital flow, constructing a decentralized, trustworthy collaborative, and fair value distribution new retail ecosystem. This effectively solves problems such as information opacity, isolated points systems, data monopolies, and financing difficulties for SMEs in the traditional model.

The application discloses a kind of based on blockchain technology's cross-industry alliance right management method and system, belong to blockchain technology field.The method includes: system initialization, rule setting, transaction processing and right exchange.System includes alliance chain network, smart contract layer, application layer and external service interface;Smart contract layer is deployed with general right management contract, transaction and account distribution contract, right exchange contract and right pool management contract.The application realizes the generation of general right and the transfer of right gold synchronization through right and fund anchoring mechanism;Through multilevel automatic account distribution, realize the real-time right distribution of multiple roles in single transaction;Adopt hybrid storage on-chain and off-chain, based on attribute encryption and zero-knowledge proof, realize data privacy protection.The application solves the problems of data silos, high trust cost, right idle and insufficient privacy protection in the prior art, and realizes safe, efficient and trusted cross-industry alliance right management.

The application relates to the technical field of blockchains, and provides a consortium chain account management method, system and device based on a smart contract and a medium. The method comprises the following steps: receiving a first smart contract transaction and smart contract parameters sent by an administrator terminal; calling an account management contract according to an account private key in the first smart contract transaction; and performing account management according to the account management contract and the smart contract parameters. The consortium chain account management method based on the smart contract provided in the application can directly initiate a consortium chain account management process through the administrator terminal in the process of consortium chain account management based on the smart contract, the contract system can call the account management contract to perform account management, the process is simple and convenient for auditing, and the account management process is simplified. Meanwhile, the administrator terminal with the highest authority can control the consortium chain account management process at any time in the process, and the account management security is improved.

Supporting various services related to digital legacy that smoothly substitute the procedures for handling digital legacy without waiting for requests from the bereaved family, and recover and delete digital legacy in accordance with the will of the deceased. 【Solution means】 The system is a digital legacy management system in which a first data terminal 3 operated by the contractor himself / herself communicates with a server device 1 that substitutes the procedures for handling the legacy in accordance with the management contract for the digital legacy requested from the terminal. The server device 1 requests the first data terminal 3 to confirm the survival of the contractor himself / herself as a survival confirmation request. The CPU 1-2 determines the survival status of the contractor based on the response result from the first data terminal 3, and automatically deletes the digital legacy of the deceased registered in the contract servers 2-1 to 2-N when the survival status of the contractor cannot be confirmed.

The application discloses a kind of based on blockchain technology's cross-industry alliance right management method and system, belong to blockchain technology field.The method includes: system initialization, rule setting, transaction processing and right exchange.System includes alliance chain network, smart contract layer, application layer and external service interface;Smart contract layer is deployed with general right management contract, transaction and account distribution contract, right exchange contract and right pool management contract.The application realizes the generation of general right and the transfer of right gold synchronization through right and fund anchoring mechanism;Through multilevel automatic account distribution, realize the real-time right distribution of multiple roles in single transaction;Adopt hybrid storage on-chain and off-chain, based on attribute encryption and zero-knowledge proof, realize data privacy protection.The application solves the problems of data silos, high trust cost, right idle and insufficient privacy protection in the prior art, and realizes safe, efficient and trusted cross-industry alliance right management.

The present application relates to the technical field of cross-chain transaction, in particular to a smart contract cooperation method, system, device and medium based on cross-chain transaction. It comprises the following steps: S1, initiating cross-chain transaction on the source chain, triggering the qualification review contract, node management contract and verification cooperation contract set on the source chain; S2, the qualification review contract extracts the qualification data of the initiator and the receiver according to the initiated cross-chain transaction, and the transaction value of the cross-chain transaction, carries out risk quantitative analysis on the cross-chain transaction according to the qualification data and the transaction value, and determines the risk value according to the analysis result; by constructing a multi-dimensional risk quantitative evaluation system, the problem of insufficient risk assessment accuracy is effectively solved, the qualification data of the transaction initiator and the receiver and the transaction value are deeply integrated, a multi-dimensional quantitative model with dynamic weight distribution is used to calculate the comprehensive risk value, and the cross-chain transaction risk is finely described.

The application provides a game guild management method, device and equipment, a server and a medium, and relates to the technical field of blockchains. The method comprises the following steps: in response to an application operation of a preset guild operation input by a first game player, obtaining management application information for a game guild; according to the management application information, sending a management request for the game guild to any node in a blockchain, so that the node uses a pre-deployed guild management contract to generate a contract for the game guild according to the management request; and receiving information of the contract sent by the node, wherein the contract is used to perform a preset guild operation of the game guild. The node uses the pre-deployed guild management contract to generate the contract for the game guild according to the management request, thereby improving the freedom of defining the contract of the game guild, and the contract is used to perform the preset guild operation of the game guild, thereby improving the freedom of the game guild operation, further improving the freedom of the game guild, and improving the user experience.