Baidu Online Network Technology (beijing) Co., Ltd.

Beijing Baidu Netcom Science Technology Co., Ltd

Microsoft Technology Licensing, LLC

Beijing Baidu Netcom Science and Technology Co., Ltd.

Giesecke+devrient Mobile Security Gmbh

Baidu Online Network Technology Co., Ltd.

Wei Xiao

Lei Zhang

Qi Zheng

Chunhui Wan

Bingxin Fan

Feng Li

Yuan Wang

Fan Zhang

Wenchao Wang

Zhan Li

Yunpeng Wang

Sheng Liang

Zhiyuan Yu

Shihui Zhou

Xianghui Zhao

Xiaotian Liu

Chunfeng Chen

Bing Duan

Yucao Wang

Junyi Sun

Provided are a method and apparatus for operating blockchain system, a device and a storage medium. The method is described below. To-be-processed blockchain data is processed through a kernel engine of a blockchain system, a kernel component call request is generated based on a kernel component interface during the processing process, and a kernel component is called according to the kernel component call request, where at least one kernel component is provided. The kernel component call request is executed through the kernel component to execute processing of a set component function and satisfy a processing requirement for the to-be-processed blockchain data.

Method and apparatus for operating blockchain system, device and storage medium

A method for implementing a smart contract based on a blockchain, a device, and a medium are provided. The detailed implementation includes: creating a resident process for a resident smart contract and creating a virtual machine by the resident process when achieving an enable condition of the resident smart contract; loading codes of the resident smart contract into a memory through the virtual machine; receiving a data access request generated by a normal smart contract within a block generation cycle through an across-contract calling interface of the virtual machine; and executing the resident smart contract through the virtual machine to process the data access request and returning a data access result to the normal smart contract.

Method for implementing smart contract based on blockchain

A method for determining a main chain of a blockchain, a device, and a storage medium. The method comprises: determining, on the basis of a detection result that it is detected that a blockchain has at least two fork chains, weights of blocks in the fork chains (); determining, on the basis of the weights of the blocks comprised in the fork chains, the weights of the fork chains (); and determining a main chain from the fork chains on the basis of the weights of the fork chains, and rolling back the fork chains except for the main chain ().

Method for determining main chain of blockchain, device, and storage medium

Provided are a method and apparatus for blockchain community governance, a device and a storage medium. The method is described below. A community governance transaction request initiated by a blockchain account and a governance scene to which the community governance transaction request belongs are acquired. Community governance authority of the blockchain account in the governance scene is verified according to the governance scene and governance token resource information in the blockchain account. In a case where a community governance authority verification is successful, the community governance transaction request is executed.

Method and apparatus for blockchain community governance, device and storage medium

A method and an apparatus for processing a transaction in a blockchain network, a related device, and storage medium are disclosed. The method includes the following. A transaction submission request in a form of readable data field is obtained, and the data field in the transaction submission request is processed. If a target field exists during processing the data field, a virtual machine is called to execute logical codes corresponding to the target field. According to a code execution result from the virtual machine and a processing result of the data field, a processing result of the transaction submission request is determined.

Blockchain network transaction processing method, apparatus, device, and storage medium

A method for processing a resource of a block chain may include: issuing a stake certificate in a block chain based on a set stake certificate issuing mechanism, allocating the stake certificate to a stake account according to a stake proportion, and storing operation data of the issuing and allocating the stake certificate into the block chain, the stake account referring to a block chain account; issuing a circulation resource in the block chain based on a set circulation resource issuing mechanism, allocating the circulation resource to the block chain account according to a circulation resource allocation strategy, and storing the operations of the issuing and allocating the circulation resource into the block chain; and ascertaining, during operation of the block chain, a block-producing node according to a delegated proof of stake consensus algorithm, by using the stake certificate of each stake account as a consensus certificate.

Method and apparatus for processing resource of block chain, device and medium

Disclosed are a method and apparatus for processing an account of a blockchain network. The method includes: obtaining an account transaction request associated with a chain account, wherein, the chain account belongs to the blockchain; obtaining an account smart contract from the account transaction request, and writing the account smart contract into a block, wherein, the account smart contract is configured to perform operation on a chain element in the chain account when executed.

Method and apparatus for processing account of blockchain network, and storage medium

Embodiments of the present disclosure disclose a method for processing privacy data of a block chain. When implemented by a block chain node, a specific implementation comprises: acquiring a data calculation transaction request initiated by a data user side based on a privacy smart contract; acquiring homomorphically encrypted source data according to the data calculation transaction request; invoking the privacy smart contract according to a calculation task in the data calculation transaction request; and performing an uplink operation on the data calculation transaction request and the calculation result to feed the data calculation transaction request and the calculation result back to the data user side of the data calculation transaction request, for the data user side to perform a homomorphic decryption and de-blinding on the calculation result, to acquire a plaintext calculation result. Thus, the scheme of processing the privacy data of the block chain is optimized.

Method and apparatus for processing privacy data of block chain, device, and storage medium

A blockchain-based data processing method and apparatus, a device and a medium are provided, which are related to a blockchain technology. The method includes: acquiring a locally generated data processing transaction request; pre-executing the data processing transaction request, to determine a pre-execution result including write data; updating a data object in a local database according to the write data, and marking updated data of the data object as data with an unconfirmed state; encapsulating the pre-execution result into the request, and transmitting an encapsulated data processing transaction request to a blockchain network, to request other blockchain nodes to process it; and determining updated data associated with the encapsulated request as invalid data, in response to determining that the blockchain network refuses to execute it, or marking the updated data associated with the encapsulated request as data with a confirmed state, in response to determining that the blockchain network executes it.

Blockchain-based data processing method and apparatus, device, and medium

Embodiments of the present disclosure provide a consensus mechanism deployment method and apparatus. The method includes: acquiring a customized consensus plugin, wherein the customized consensus plugin is obtained by compiling a customized consensus mechanism written based on a standardized consensus mechanism framework; and deploying the customized consensus plugin in a native node.

Consensus mechanism deployment method and apparatus

A data processing method is applied to a computing device serving as a blockchain node. The method comprises: acquiring a data processing request; according to the data processing request, determining a current version identifier; according to the data processing request, determining a target key value pair used for processing data, and processing data in the value range of the target value pair; writing a newly produced target value pair into a storage space, wherein the key domain of a key value pair in the storage area stores a key identifier and a version identifier, and the version identifier in the key domain of the newly produced target key value pair is the current version identifier.

Data processing method, device, and a storage medium

Scanning and rescanning detect state inconsistencies between data entities in repositories or other components of a distributed computing environment. First, entities are scanned based on a cutoff time TO. Entities for which state comparison is undesired are placed in a skipped entity list. Any inconsistencies found in other entities is reported. Then subsequent rescanning fetches state and attempts to pare down the skipped entity list. Rescanning may be capped. Inconsistencies may be detected without requiring downtime from services that update data entity state, and false reports of inconsistency may be avoided.

Data consistency check in distributed system

The disclosure provides a blockchain-based data processing method, a blockchain-based data processing apparatus, an electronic device, and a medium, and relates to a field of blockchain technologies. The method includes: obtaining a delay transaction request and triggering execution of the delay transaction request; during the execution of the delay transaction request, homomorphically encrypting determined data to be disclosed with a delay, to generate delay transaction data containing encrypted delay data, and storing the delay transaction data on an uplink; and when set delay disclosure conditions are met, decrypting the delay transaction data.

Blockchain-based data processing methods, devices, and media

Provided are an Ethereum Virtual Machine-based transaction processing method and apparatus, a device, a program and a medium, which relate to the field of computer technologies and, in particular, to blockchain technologies. An implementation scheme includes: acquiring, by a virtual machine instance running in a blockchain node, a to-be-processed transaction request; generating, by the virtual machine instance, a data access request for target access data and transmitting the data access request to an interface module in a process of executing the to-be-processed transaction request; performing, by the interface module, instruction conversion according to the data access request to determine a blockchain access interface corresponding to a function of the data access request; and calling, by the interface module, the blockchain access interface for a data storage space of a blockchain to access the target access data and feeding back an access result to the virtual machine instance.

EVM-based transaction processing method, device, program and medium

Disclosed are a data processing method and apparatus for a blockchain, and a medium. The data processing method for the blockchain is applied to a blockchain node. The method includes: obtaining a transaction request for creating a synchronizing group; based on the transaction request for creating the synchronizing group, determining one or more sequential blocks from a first block to a current block as one or more synchronizing blocks of the synchronizing group; determining a synchronizing signature of the synchronizing group based on the one or more synchronizing blocks; and recording the synchronizing signature as transaction data in the current block.

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Beijing, China

Wei Xiao