442 results about "Smart contract" patented technology

Methods, systems, and devices for digital token management are described. Techniques described herein may enable the generation of a key pair associated with the application that is temporarily valid without prompting the user to authenticate each transaction individually. For example, the user may validate a key pair to be used for transactions for a period of time, for an amount of crypto token, for a quantity of transactions, and the like. Accordingly, the user may perform purchases using the key pair without exiting the application. In some examples, the key pair may be generated by the application or by an SDK associated with a blockchain wallet application. The key pair may be signed by each of the user, the client application, and one or more on-chain smart contracts, which may prevent the key pair from being used for purchases that are not approved by the user.

A method for controlling the handling of a biological material, the method including the steps of: receiving, from a first apparatus of the plurality of apparatuses, a device associated with a user interface for inputting data relating to biological material, or a biological material packaging device, status information for the material and identification information identifying a smart contract associated with the material; querying a distributed ledger to retrieve a current status of a smart contract associated with the material; querying a data storage location that is not a secure distributed ledger to retrieve executable instructions; executing the instructions to process the status information, wherein the processing includes: validating the status information, and determining parts of the status information to store on the distributed ledger; and write to the distributed ledger to: store the determined part or parts of the status information, and update the status of the smart contract.

The invention name of the present disclosure is "Method and product for managing electronic coupons through public blockchain contract". The present disclosure provides a method and product for managing electronic coupons through a smart contract deployed on a public blockchain. The method comprises: receiving a request for performing an operation related to managing the electronic coupons; verifying the request; and in the case where the verification is positive, performing the requested operation and returning the result of the operation as a response to the request. The scheme of the present disclosure has the advantages of high availability, high security, high liquidity, high flexibility and the like for electronic coupon management.

This invention relates to the field of blockchain and smart contract application technology, specifically a smart contract-based anti-counterfeiting information verification system for commodity vouchers, comprising: a request receiving module for receiving commodity voucher verification requests sent by terminals; a network status monitoring module for acquiring node computational status data and consensus delay data, and quantifying and generating a consensus friction entropy index; a graph feature analysis module for extracting transaction flow graph data and generating risk exposure assessment results; a state machine decision-making module for combining the consensus friction entropy index and the risk exposure assessment results to output a target verification level; and an adaptive verification execution module for executing corresponding verification logic, updating the commodity voucher verification status, and adjusting smart contract resource consumption parameters to provide feedback control over the consensus friction entropy index of the blockchain network, thereby achieving coordinated control of verification efficiency and system operational security.

The present disclosure provides a method for tracing a path of an attack on a smart contract on a blockchain, belonging to the technical field of blockchains. The method specifically includes: determining a hacker's attack address, and determining an attack's start time and an attack's stop time according to a data record of the hacker's attack address; and determining hash values of all transactions from a hacker's attack destination address between the attack's start time and the attack's stop time automatically, and obtaining a fungible token and a non-fungible token by parsing the hash values automatically. The problems of large error and low efficiency during original manual extraction are solved, accuracy and efficiency are higher, and the overall security is improved.

This invention discloses a blockchain-based verifiable key generation method in MA-CPABE. The method includes: a data owner running a global setting algorithm to generate system parameters, and electing multiple decentralized attribute authorization nodes through a blockchain staking mechanism; each node generating public and private keys and uploading the public key to the blockchain; the data owner encrypting data based on a policy and publishing the ciphertext and its identifier to the blockchain; when a user requests a key, the attribute authorization node calls an optimized key generation circuit to generate a decryption key and a corresponding zero-knowledge proof, submitting the proof and related data to the blockchain, where a verification node verifies and records the key generation event; for the update history of the zero-knowledge proof, a chain-based evidence storage system is constructed through a smart contract event mechanism to achieve verifiable traceability of its change history. This invention achieves decentralized trusted key management, efficient off-chain computation and verifiability, and significantly reduced blockchain resource consumption.

A system and method for generating non-fungible tokens (NFTs) associated with encrypted near-field communication (NFC) tags is described. In an example implementation, the system may include an NFT creation platform configured to receive a request to generate an NFT in association with an asset. A wallet having a private key is then generated. A smart contract associated with the NFT can then be configured. The smart contract may have a unique identifier, and the NFT creation platform may be further configured to encrypt the unique identifier of the smart contract using the private key of the wallet. The encrypted unique identifier of the smart contract may then be stored in a database.

The application discloses a smart contract vulnerability detection method based on static analysis and large language model fusion, comprising the following steps: obtaining a smart contract source code to be detected, using a static analysis tool to analyze the pretreated smart contract source code, and generating a static analysis abstract; the smart contract source code and the static analysis abstract information are spliced according to a preset prompt template, and then input into a large language model to obtain a vulnerability detection result. The application effectively integrates the structured priori knowledge of static analysis into the input features, significantly improves the recognition ability of the model for seven core Solidity vulnerabilities, can accurately adapt to the classification task while maintaining the efficiency, and effectively prevents the false negatives, false positives and model security risks.

The application provides a kind of blow molding product full life cycle quality tracing and process sharing system based on blockchain, belongs to intelligent manufacturing and industrial data security technical field.The system includes data acquisition and storage module, for obtaining production information and storing key characteristic value or hash value in blockchain;Multi-party collaborative management module, for configuring dynamic data access rights for participants through smart contract;And process knowledge asset management module, for extracting process parameter set from blockchain data that is strongly associated with high-quality output results, encapsulating as verifiable process knowledge package, and realizing its pricing, transaction and feedback loop through smart contract.The method realizes cross-enterprise trusted data tracing, safe sharing and value realization of process knowledge through the collaborative work of the above modules, improves product quality consistency and industry knowledge reuse efficiency.

The embodiment registers nodes and data objects on the blockchain. The embodiment schedules object tasks associated with the data objects in the data controller via a scheduler. The data controller generates task execution tokens on the blockchain, whereby the task execution tokens are associated with the object tasks. The embodiment senses the task execution tokens received from the data controller by the nodes; in response to the sensed task execution tokens, the object tasks are executed on the nodes, and node energy consumption metrics and energy consumption tokens for the object tasks are generated on the blockchain. The embodiment also sends energy consumption tokens from the nodes to the data controller, causing smart contracts to calculate task energy consumption metrics based on the node energy consumption metrics, wherein the data objects on the blockchain are updated using the task energy consumption metrics.

The one or more embodiments of the specification provide a data account access authorization method and device, which is applied to a block chain node; an account type supported by the block chain includes a data account; the data account is used to maintain business data required for contract calculation of a smart contract deployed on the block chain; an account structure of the data account includes an authorization field used to maintain access authorization information corresponding to the data account; the method includes: receiving a data account authorization transaction initiated by a management party corresponding to the data account and directed to the data account; the data account authorization transaction includes an account identifier of a contract account and access permission information of the data account authorized to the contract account; in response to the data account authorization transaction, determining whether the management party has a management right corresponding to the data account; if yes, filling the correspondence between the account identifier of the contract account and the access permission information as the access authorization information corresponding to the data account into the authorization field in the data account.

This invention discloses a blockchain-based method and system for supervising, settling, and tracing prepaid funds in the commercial prepaid fund management field. It verifies the qualifications of applying merchants, generates a unique on-chain identity for each merchant upon successful verification, deploys a prepaid fund management smart contract on the blockchain, and initializes logically isolated consumer fund pools and merchant settlement pools within the smart contract. The consumer fund pool holds consumer prepaid funds, while the merchant settlement pool holds settlement funds awaiting transfer to merchants. This invention's dual-isolation fund pool design technically eliminates the possibility of merchants misappropriating prepaid funds, ensuring consumer fund security. The dynamic reserve fund mechanism adjusts the reserve fund provision ratio in real time based on merchant operating conditions, balancing risk control and merchant liquidity. The consortium blockchain architecture and hierarchical permission design meet the differentiated needs of regulatory agencies, merchants, consumers, and other stakeholders, promoting the healthy development of the prepaid consumption industry.

Systems and methods for configuring a smart contract are disclosed. A system may receive unstructured data and identifying, based on the unstructured data, an intent to perform a transfer of data. The system may then identify, based on the unstructured data, parameters associated with the transfer of data. The parameters may include an amount of data to be transferred, a transferee, and at least one condition associated with the transfer of data. The system may then retrieve identifier data from a storage module, the identifier data including a first unique identifier. The system may then send, to a Large Language Model (LLM) via a first prompt engine module and an LLM Application Programming Interface (API), a prompt based on the unstructured data and the identifier data. The system may then receive LLM output from the LLM, and based on the LLM output, configure a smart contract.

A proxy value allocation and instant settlement system for atomic tasks is disclosed. The task decomposition module is configured to receive complex tasks and decompose them into multiple atomic subtasks using a directed acyclic graph (DAG) algorithm. Each atomic subtask is bound to a dynamic identity identifier of the executor proxy. A value weight allocation module, connected to the task decomposition module, is configured to calculate the value weight and corresponding settlement amount for each atomic subtask based on preset indicators. A fund locking module, connected to the value weight allocation module, is configured to pre-lock the total task funds at a distributed settlement node using a smart contract and set release conditions. This invention, by utilizing the DAG construction unit within the task decomposition module during the task initiation phase, can decompose complex macro-objectives into a set of atomic subtasks with independent executability and verifiability, eliminating the risks of identity theft and responsibility shirking during task execution and laying the foundation for subsequent settlement.

Embodiments of the present application provide a method and system for probing, a terminal device and a medium, wherein in the method, a current time device parameter list of any network element in a network is obtained; all blocks in a device parameter blockchain are traversed to determine whether the current time device parameter list is saved in the device parameter blockchain, the device parameter blockchain being used to save the device parameter list of the network element; when the current time device parameter list is not saved in the device parameter blockchain, the current time device parameter list is stored in the device parameter blockchain; in response to a change in the device parameter blockchain, a smart contract is called, the smart contract being used to probe the network element; a probing result returned by the smart contract is obtained, and the probing result is stored in a probing result blockchain, thereby realizing automatic probing, ensuring that the probing is timely and effective, and realizing blockchain storage of the probing record, and ensuring the authenticity of the probing record.

The application belongs to the technical field of computers, and particularly relates to a safety acceptance method, device, equipment and storage medium, which are used to improve the efficiency of safety acceptance. The safety acceptance method comprises the following steps: in response to a safety acceptance instruction, obtaining a safety standard item to be accepted of a target project; based on a smart contract, performing acceptance on the safety standard item to be accepted; and outputting an acceptance result of the target project. The application can greatly improve the efficiency of safety acceptance and guarantee the accuracy and authority of the safety acceptance result.

The application discloses a kind of based on blockchain voting management method, system, equipment and storage medium, the method is executed by voting management system, voting management system is applied to the blockchain voting management framework including identity verification agency, comprising: when detecting that voting user sends first voting request, verification instruction is sent to identity verification agency, identity verification agency is determined to have voting identity when voting user based on first smart contract and verification instruction, login password is sent to voting user;When detecting that voting user sends second voting request based on login password, it is verified whether voting user has voting qualification;If yes, then the voting result of voting user is obtained;According to the voting result of voting user, generate voting information, and store voting information into target blockchain.The present application prevents false voting by login password for people without voting identity, and prevents tampering with voting by introducing blockchain, to ensure the credibility of voting.

Methods, systems, and devices for data management are described. An application may receive a request message including a payload for signature by a blockchain address and indicating requested information to be provided to a collection endpoint associated with a client application. The application may receive the information and encrypt the information using a cryptographic key generated based on a passkey associated with a user. A smart contract may store the encrypted information mapped to the blockchain address that is associated with the passkey. The application may obtain the encrypted information from the smart contract and decrypt the information using the cryptographic key. The application may broadcast, after receiving a user input executing the signature, messages to a blockchain network and configured to execute an operation on the blockchain network and transmit, using the collection endpoint, a response message including the requested information and an identifier of the operation.

The application discloses a hierarchical encryption storage method and system for a UAV. The method comprises the following steps: obtaining a dynamic security policy coded as a smart contract from a block chain network, and calling a static security policy from a local; the dynamic security policy and the static security policy both comprise a no-fly area and an execution action; obtaining a three-dimensional position of the UAV in real time, and judging whether the three-dimensional position of the UAV is in or near the no-fly area of the dynamic security policy or the static security policy; if yes, calling a pre-configured flight task type from the local, and determining a security level according to the flight task type; executing the corresponding dynamic security policy or static security policy according to the security level, and performing hierarchical data encryption storage. When the UAV enters a sensitive area, not only corresponding flight control is implemented, but also encryption of a corresponding level is triggered automatically and in real time, so that linkage protection of flight safety and data safety is realized, and data protection and flight state are ensured to be performed synchronously.

This application discloses a system and method for automatically analyzing smart contract vulnerabilities using AI, belonging to the field of blockchain technology. The key technical solutions include a data acquisition and preprocessing module, an AI vulnerability analysis module, a model continuous learning module, an integration service module, and a database module. This application provides comprehensive and in-depth security assessments. Through machine learning and deep learning technologies, this system can identify and predict unknown vulnerabilities, thereby greatly improving audit efficiency and accuracy.

The application discloses a kind of blockchain-based smart contract asynchronous execution method, system, equipment and medium, mainly related to smart contract asynchronous execution technical field, to solve the problem of slow efficiency of existing smart contract execution. It includes: generating Pre-Prepare message, sending to all nodes;When any node receives external Pre-Prepare message, the legality verification and correctness verification of external Pre-Prepare message are carried out, to be cached to local after the verification result is legal and correct, and Prepare message is sent to all nodes;When any node receives external Prepare message, the legality verification of external Prepare message is carried out, to obtain the verification result after verification is legal, to send Commit message to all nodes after the verification result meets preset rule;After any node is verified legal and correct, the Pre-Prepare message corresponding to external Prepare message in local cache is read, and the block data in the corresponding Pre-Prepare message is put into the waiting execution queue.

A data sharing method may be applied to a server side, and the method includes: receiving a data access request sent by a first client side, where the data access request includes first data-sharing information, and the first data-sharing information is used to describe to-be-accessed data; and sending first storage information to the first client side in a case that the first client side meets a first access condition in a first smart contract, where the first smart contract belongs to a first block in a blockchain, and the first storage information is used to represent information that is corresponding to the to-be-accessed data and that is stored in a storage server.

The application discloses a blockchain smart contract editor file management method and device in a WebIDE, wherein the method comprises the following steps: the smart contract editor comprises a browser end and a server end, the server end generates a smart contract editor resource file and a corresponding smart contract editor version file; the browser end initializes the smart contract editor and obtains a loading version file from the server end; the browser end checks whether the resource file corresponding to the selected version number has been cached locally according to the selected smart contract editor version number; if the browser end does not cache the resource file corresponding to the version number locally, the corresponding resource file is obtained from the server end according to the version number. The management scheme can effectively manage different version contract editor files, accelerate the loading speed of the contract editor file on the browser end, and the server end can timely process the version file to generate a new contract editor version file for the browser end.

The application discloses a kind of spatiotemporal constraint's blockchain digital collectible dynamic generation method and system, it is related to blockchain technology field, including, digital collectible technical service provider carries out digitization collection and modeling based on multi-view three-dimensional reconstruction technology to physical entity, generates high-precision initial three-dimensional model;The initial three-dimensional model is bound with the environmental data of the physical entity that is collected in real time by sensor network, and the digital twin model of the physical entity is constructed;Intelligent contract is deployed on blockchain, and the preset spatiotemporal constraint condition is defined as the verifiable rule in the intelligent contract;When user client meets the spatiotemporal constraint condition, it submits its spatiotemporal information to the intelligent contract Zero-knowledge proof that the verifiable rule is met.The application evolves initial three-dimensional model, generates final digital collectible file, finally the hash value and metadata of the file are notarized in blockchain, complete casting.

The application discloses a wallet cleaning contract detection method and system based on an intermediate representation and a large language model, and solves the technical problem that the existing intelligent contract detection method based on supervised learning highly depends on labeled data support. On-chain lacks large-scale labeled data, the model cannot fully learn the core malicious features, and finally the detection effectiveness of the wallet cleaning contract is greatly reduced. The method comprises the following steps: constructing a contract intermediate representation according to the obtained contract address on the Ethereum chain through the Gigahorse intelligent contract analysis tool; carrying out fund transfer behavior identification and semantic recovery processing on a plurality of functions in the contract intermediate representation, obtaining the original contract function level fund behavior and the pre-check feature corresponding to each function; using the explicit routing distribution rule to preliminarily judge and filter the functions, obtaining the explicit distribution candidate function and the routing distribution candidate function; based on the explicit routing distribution prompt word, using a large language model to detect the two types of candidate functions, and outputting the wallet cleaning contract detection result.

This invention discloses a smart contract-driven dynamic reconfiguration method and system for inspection convoys, relating to the field of blockchain smart contract technology. The method includes: a smart contract that, based on the physical state vectors uploaded by each inspection vehicle node to the blockchain sidechain, generates a comprehensive resource availability score through a preset resource evaluation function to monitor the operational status of the lead node; a smart contract-driven node election mechanism triggers dynamic convoy reconfiguration: selecting the optimal node as the new lead node, calculating the target positions of subordinate nodes according to preset formation parameters, and updating the geometric formation of subordinate nodes using spherical coordinate transformation and distance locking mechanisms; identifying detection failure points through task status determination during the inspection process, encapsulating the failure points and publishing them to the on-chain task pool, and comprehensively evaluating the spatial distance between nodes and task points and the node resource redundancy capability to select the optimal node to execute the supplementary testing task. The method described in this invention achieves optimal scheduling of inspection resources.