Abstract: The present disclosure provides a method and an apparatus for identifying a dark web website in a scenario where a plurality of pages are accessed simultaneously. The method includes: obtaining browsed network traffic packets of websites to be identified, and extracting direction sequence features from the network traffic packets; dividing the direction sequence features into a plurality of subsequence features based on a plurality of sliding windows, and inputting the plurality of subsequence features into a neural network model to extract preset pattern features; analyzing a correlation of the preset pattern features using a target website identification model to obtain a probability result of a target website being accessed; obtaining a target website identification result in the website to be identified based on the probability results and a preset classification model.

Abstract: The present disclosure provides a permission-controlled smart contract upgrade method. The method first deploys a contract upgrade smart contract, and then deploys a smart contract to be upgraded including information of a required minimum number of agreements on passing a proposal related to the contract. Then, any of the blockchain nodes receives a contract upgrade proposal submitted by one of the plurality of user clients. After the contract upgrade smart contract determines to pass the proposal, a proposing event is generated and then is forwarded to each user client participating in the contract. After the user client receives the proposing event, the user client receives user's vote and feeds it back to the contract upgrade smart contract. If the number of agreements exceeds the required minimum number of agreements, the proposal is passed and employed, and a binary replacement is performed to complete upgrade of the smart contract.

Abstract: A method, an apparatus and a device for parallel execution of a smart contract, and a medium are provided. The method for parallel execution of the smart contract includes the following steps: determining, according to a chain table for a cross-contract calling of each transaction in target execution transactions and the contract type of a smart contract in the target execution transactions, a calling dependency relationship between the transactions, and obtaining, according to the calling dependency relationship, transaction calling chains that cannot affect each other during an execution process.

Abstract: The present disclosure provides a permission-controlled smart contract upgrade method. The method first deploys a contract upgrade smart contract, and then deploys a smart contract to be upgraded including information of a required minimum number of agreements on passing a proposal related to the contract. Then, any of the blockchain nodes receives a contract upgrade proposal submitted by one of the plurality of user clients. After the contract upgrade smart contract determines to pass the proposal, a proposing event is generated and then is forwarded to each user client participating in the contract. After the user client receives the proposing event, the user client receives user's vote and feeds it back to the contract upgrade smart contract. If the number of agreements exceeds the required minimum number of agreements, the proposal is passed and employed, and a binary replacement is performed to complete upgrade of the smart contract.

Abstract: The present disclosure provides a permission-controlled smart contract upgrade method based on a smart contract. The method first deploys a contract upgrade smart contract, and then deploys a smart contract to be upgraded including information of contract participants and information of a required minimum number of agreements on passing a proposal related to the contract. Then any of the blockchain nodes receives a contract upgrade proposal submitted by a user to the contract upgrade smart contract, the contract upgrade proposal carrying an address of the smart contract to be upgraded and binary information of a new contract. After the contract upgrade smart contract determines to pass the proposal, a proposing event is generated and then is forwarded to each user client participating in the contract. After the client receives the proposing event, the client receives user's vote and feeds it back to the contract upgrade smart contract.

Abstract: Provided is a permission-controlled smart contract upgrade method. The method deploys a contract upgrade smart contract, and deploys a smart contract to be upgraded including information of contract participants and a required minimum number of agreements on passing a proposal related to the contract. Any of the blockchain nodes receives a contract upgrade proposal submitted by user to the smart contract, the proposal carrying address of the contract to be upgraded and binary information of a new contract. After the smart contract determines to pass the proposal, a proposing event is generated and forwarded to each user client participating in the contract. After the client receives the event, the client receives user's vote and feeds back to the smart contract. If the number of agreements exceeds the required minimum number, the proposal is passed and employed, and a binary replacement is performed to complete upgrade of the smart contract.