Abstract: Biometric information is obtained from a user. A determination is made that the obtained biometric information matches at least one entry in a biometric database. In response to determining that the obtained biometric information matches the at least one entry in the biometric database, non-biometric verification information is obtained. A determination is made as to whether at least a portion of the non-biometric verification information matches at least a portion of preset non-biometric verification information associated with the user. In response to determining that the at least a portion of the non-biometric verification information matches, a determination is made that an identity of the user is verified. In response to determining that the at least a portion of the non-biometric verification information does not match, a determination is made that the identity of the user is not verified.

Abstract: Disclosed are a method and device for performing credit evaluation on a work publisher on the basis of a blockchain. The method and device can perform originality analysis on a target work published by a target service node to the blockchain so as to obtain an originality representation value corresponding to the target work. If the originality representation value is low, a copyright credit score corresponding to the target service node is deducted. The deduction is subjected to consensus verification performed by a plurality of service nodes and can only be made public in the blockchain after the consensus verification is successful. The blockchain can publicize a copyright credit score deduction record corresponding to the target service node, based on which the copyright credit score corresponding to the target service node can be determined. The lower the copyright credit score, the poorer the credit level of the target service node.

Abstract: The present disclosure relates to blockchain-based data processing methods and devices to achieve balance between a service need and system resource consumption. In one example method, an amount of service data processed by consensus in a blockchain in a specified time period is monitored. A determination is made as to whether the monitored amount of processed service data in the specified time period is less than a specified first threshold or more than a specified second threshold. In response to determining that the monitored amount of processed service data in the specified time period is less than the specified first threshold or more than the specified second threshold, a block generation time for the blockchain is dynamically adjusted. A new block in the blockchain is then dynamically adjusted based on the adjusted block generation time.

Abstract: One example method performed by a registration center includes obtaining addresses of a first plurality of servers of a first blockchain node in a consensus network, where the consensus network further includes a plurality of additional blockchain nodes, where each blockchain node of the plurality of additional blockchain nodes includes a corresponding plurality of servers; sending the addresses of the first plurality of servers to each blockchain node of the plurality of additional blockchain nodes and a client for storage; sending a heartbeat detection message to a first server of the first plurality of servers; determining that a response message to the heartbeat detection message is not returned by the first server in a predetermined time period; determining that the first server is offline; and instructing each blockchain node of the plurality of additional blockchain nodes to delete an address of the first server.

Abstract: A resource processing method and apparatus. The method is achieved by a computer configured to execute the following steps: generating a resource allocation chart based on a resource allocation request; processing the resource allocation chart and generating an access entrance of the resource allocation chart; opening the access entrance to enable at least one third party resource supplier to respond to the resource allocation request via the access entrance. The method further comprises: when the resources are not available or not suitable for allocation, receiving a resource allocation chart, wherein the resource allocation chart is based on the resource allocation request; generating an access entrance of the resource allocation chart; opening the access entrance to at least one third party resource supplier; and receiving the allocated resources from the at least one third party resource supplier by responding to the resource allocation request through the access entrance.

Abstract: A method for implementing visualization of public welfare activities includes: displaying to a target user a map of a geographic region for carrying out a public welfare activity in response to the target user's selection, wherein the map comprises a first geographic location associated with a first icon indicating that the public welfare activity has been carried out at the first geographic location and a second geographic location associated with a second icon indicating that the public welfare activity is able to be carried out at the second geographic location; when a relationship exists between the target user and a public welfare activity participant user that has carried out the public welfare activity on the map, displaying on the map user information of the public welfare activity participant user; updating the second icon to be a first icon in response to the target user's selection on the second icon.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media. One method includes: at a blockchain-based application, receiving a request for resolving a dispute between at least a first party and a second party. A time that the request is received on the blockchain is recorded. One or more potential dispute resolutions is received from one or more dispute resolution providers that are registered on the blockchain-based application. A first selection is received from the first party and a second selection from the second party. At least one of (i) at least one common potential dispute resolution between the first set of the one or more potential dispute resolutions and the second set of the one or more potential dispute resolutions, or (ii) that none of the potential dispute resolutions are acceptable to the first and second parties is determined.

Abstract: One or more implementations of the present specification provide a data processing method and apparatus for a blockchain member node, where the blockchain member node includes a plurality of service servers, and at least one authentication module runs on each service server; and a public key of an authentication module of the at least one authentication module is authenticated by the blockchain.

Abstract: Implementations of this specification provide blockchain-based recording and querying methods and apparatuses. An example method includes operations performed by an access gateway, including receiving, from a first service system, user data including a user identifier of a user; transmitting, to an identifier hash system, a first hash request for the user identifier; receiving, from the identifier hash system, a hash digest of the user identifier; replacing the user identifier in the user data with the hash digest of the user identifier, and packaging the user data into a storage transaction; transmitting, to a blockchain, the storage transaction; receiving, from the blockchain, a result of the storage transaction having been performed by a smart contract published by the first service system on the blockchain; and providing, to the first service system, the result of the storage transaction.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for generating digital marks. One of the methods includes: obtaining entity information of an entity; transmitting the entity information to one or more nodes of a blockchain for storage in the blockchain; obtaining a transaction identification associated with storing the entity information in the blockchain; and generating a digital mark for the entity based at least on the transaction identification.

Abstract: A method for payment risk control includes: receiving a request for payment graphic code generation from a mobile terminal device, the request carrying preset risk control features, the risk control features including a payment account feature of an account, a current location feature, and a station entering and exiting feature; obtaining pre-stored historical risk control features of the account according to the payment account feature in the request; detecting whether there is a transaction risk for the mobile terminal device by comparing the obtained historical risk control features with the risk control features carried in the request; and sending a risk control detection result to the mobile terminal device to generate and display a payment graphic code.

Abstract: Implementations of the present specification disclose mobile payment methods, apparatuses, and devices. In one aspect, the method includes: monitoring, by a terminal device that is in lock screen mode, outputs of one or more sensors of the terminal device; determining that the outputs of the one or more sensors satisfy first specified criteria indicative of one or more particular body movements; in response to determining that the outputs of the one or more sensors satisfy the first specified criteria, displaying, on the terminal device, a payment processing interface; receiving an input through the payment processing interface; and executing a payment service based on the input.

Abstract: Embodiments of the present specification provide methods and apparatuses for generating two-dimensional codes. One method comprising: receiving, by a secure element chip comprised in a two-dimensional code display device, code information comprising an account identifier of an account associated with the two-dimensional code display device; in response to obtaining a digital certificate for a private key stored in the secure element chip, signing, by the security element chip, the code information by using the private key to generate signed code information; and providing, the signed code information to the two-dimensional code display device for the two-dimensional code display device to generate and display a two-dimensional code based on the code information, wherein the two-dimensional code comprises information associated with the account identifier and changes dynamically over time.

Abstract: One or more implementations shown in the present specification provide an offline payment method. A communication connection between a collection device and a payment device is established, wherein both the collection device and the payment device are in an offline state. Payment data sent by the collection device is received by the payment device through the communication connection established to the collection device. Payment processing based on the payment data and account information of the payment device is performed by the payment device, to obtain a payment result. The payment result is returned, by the payment device to the collection device through the communication connection. Collection processing is performed, by the collection device, based on the payment result and obtained account information of the payment device, to obtain a collection result.

Abstract: Disclosed herein are methods, systems, and apparatus, including computer programs encoded on computer storage media, for providing blockchain-based data authorization. One of the methods includes receiving, by a blockchain node, a data acquisition transaction submitted by a data user for obtaining target data possessed by a data owner, determining, by the blockchain node, that the data user has obtained authorization of the target data, and executing, by the blockchain node, a smart contract invoked by the data acquisition transaction to issue an authorization token to the data user in response to determining that the data user has authorization of the target data, where the authorization token is sent to a privacy computing platform.

Abstract: A method for allocating virtual articles comprises: receiving at least two acquisition requests directed at a virtual article packet, and respectively recording receiving times of the acquisition requests, wherein the virtual article packet comprises one or more virtual article sub-packets; allocating acquisition sequence numbers respectively to the acquisition requests according to a sequential order of the receiving times of the acquisition requests; and allocating the virtual article sub-packets according to the acquisition sequence numbers for the acquisition requests corresponding to the acquisition sequence numbers, and sending virtual articles in the virtual article sub-packets to users corresponding to the acquisition requests.

Abstract: Implementations of this specification provide service identifier-based data indexing. An example method performed by a data indexing apparatus of a centralized database service provider that stores data by using a blockchain-type ledger includes obtaining a service identifier and a service label of a data record, the service identifier uniquely identifying a service attribute of the data record, and the service label representing a type of the data record; determining location information of the data record in the blockchain-type ledger, the location information including a block height of a data block that includes the data record, and a positional offset of the data record in the data block that includes the data record; establishing a mapping relationship among the service identifier, the service label, and the location information; and writing the mapping relationship into an index for which a primary key is the service identifier.

Abstract: Embodiments of the present disclosure provide a service-verification method and apparatus, wherein the method comprises: respectively receiving service parameters sent by a same user account on different terminals, respectively calculating corresponding service data according to the service parameters sent by each terminal; storing a plurality of corresponding relationships, each corresponding relationship comprising: service parameters sent by one terminal and corresponding calculated service data; when a service-processing request sent by any one of the different terminals is received and the service-processing request carries a target service parameter and target service data used in a current service, obtaining service data corresponding to the target service parameter according to the corresponding relationships; and acquiring a verification result according to a comparison between the obtained service data and the target service data.

Abstract: Implementations of the present specification provide a model-based prediction method and apparatus. The method includes: a model running environment receives an input tensor of a machine learning model; the model running environment sends a table query request to an embedding running environment, the table query request including the input tensor, to request low-dimensional conversion of the input tensor; the model running environment receives a table query result returned by the embedding running environment, the table query result being obtained by the embedding running environment by performing embedding query and processing based on the input tensor; and the model running environment inputs the table query result into the machine learning model, and runs the machine learning model to complete model-based prediction.

Abstract: Embodiments of the present application provide a method and an apparatus for displaying an identification code of an application. The method includes: acquiring an identification code in a target application in a system user interface (UI), where the identification code is generated by the target application according to user information in the target application; and displaying the identification code in an icon-display region of the target application in the system UI.