A method and system for decentralized transaction management in project resourcing is provided that ensures transparent and decentralized tracking of data across all stakeholders. It also provides ease of compliance for organizations on one hand, and ease of monitoring for the administrators on the other. Multiple beneficiaries and benefactors are registered with a primary administrator. Each beneficiary has a list of projects listed. A benefactor identifies a project which he wants to resource. The benefactor virtually transfers a unit of resource to a secondary administrator, for the identified project and receives credit points in exchange of the units of resource. The benefactor approves transfers of credit points to the identified project of a beneficiary. The beneficiary redeems the required credit points with the resource units. The secondary administrator will also validate the resources received by the beneficiary in exchange for the credit points.

Disclosed are systems and methods for public key infrastructure (PKI) enabled pre-authorized credit card transactions. For example, a method for granting limited transactional authorization from an account associated with a primary cardholder and a companion cardholder may include receiving a request to grant limited transactional authorization from the account for at least one transaction between the companion cardholder and a merchant, generating a response to the request, wherein the response includes at least one limitation, authenticating the response based on identification information of the primary cardholder, obtaining a private primary cardholder key upon authentication of the response, encrypting the response with the obtained private primary cardholder key, and transmitting the encrypted response for authorization of the at least one transaction according to the limitation.

A method for facilitating payment transactions for offline merchants through a third party service provider includes: receiving, by processing server, a confirmation message for a payment transaction from a computing device including a merchant identifier, consumer identifier, and transaction amount; generating, by the processing server, a notification message including the merchant identifier, consumer identifier, and transaction amount; encrypting, by the processing server, the notification message using a public key of a first cryptographic key pair; transmitting, by the processing server, the encrypted notification message to the computing device; receiving, by an encryption device, the encrypted notification message from the computing device; decrypting, by the encryption device, the encrypted notification message using a private key of the first cryptographic key pair; and displaying, by a display interfaced with the encryption device, a confirmation message including the consumer identifier included in the decrypted notification message.

A process for combining domain restriction and remote authentication may include receiving a token from a plug-in application to conduct a transaction associated with a user of a communicating device. The process may include sending an authentication request to a remote access control sever to authenticate the user, and receiving, from the remote access control server, an authentication tracking value that the remote access control server used in generation of an authentication cryptogram. The process may also include generating, using the authentication tracking value, a domain restriction cryptogram that is used for domain restriction of the token, and sending, to the plug-in application, the domain restriction cryptogram.

Implementations of the present disclosure provide techniques to improve security in blockchain networks. In some implementations, a linking request is received from a node. The node requests to be linked to a blockchain network. The linking request includes a digital code. One or more consensus verification messages are received from one or more blockchain nodes of the blockchain network. Each consensus verification message indicates whether a respective blockchain node approves or denies the linking request. A consensus verification result is determined based on the one or more consensus verification messages. In response to determining that the linking request is approved by the one or more blockchain nodes, the digital code is stored into the blockchain network as a digital certificate of the node.

Systems and methods described herein include first and second devices including one or more processors and memory, the first device being configured to purchase one or more certificates by a first process via one or more blockchain transactions. The second device may be in communication with the first device, and may be redeem the one or more certificates received by a second process via one or more blockchain transactions. The second device may exchange one or more codes to designate the one or more certificates as used on the first device. The system may include one or more servers in communication with the second device, and may be automatically generate a message containing updated redemption information of the one or more certificates when the updated redemption information has been stored in one or more databases, which may be in communication with the one or more servers.

Computer-implemented methods, non-transitory, computer-readable media, and computer-implemented systems for blockchain-based service source tracing are provided. A blockchain stores service certificates of multiple service dimensions which constitute multiple service certificate linked lists. A service system maintains a mapping relationship between a last node of each service certificate linked list and a service index of a service dimension that each service certificate linked list belongs to. In response to a client-initiated service source tracing request for a target service dimension that includes a service index of the target service dimension, the mapping relationship is queried to determine the last node corresponding to the service index of the target service dimension. A service certificate of the target service dimension stored on the blockchain is queried based on a linked list pointer recorded in the last node. The identified service certificate is returned to the client.

Systems, methods, and apparatuses for storing verified identification information in a distributed database and for verifying entities to requestors are provided herein. Identity information relating to an entity is verified by a generally recognized identity provider (GRIP). Once verified, the GRIP populates a distributed database with an entry corresponding to the verified identity information. The distributed database is publically accessible such that identity requestors can see the entries in the distributed database. In some arrangements, the distributed database is write-protected such that only an authorized GRIP can modify the distributed database. An entity can provide information to a requestor to verify an identity attribute of the entity to the requestor. The requestor uses information provided by the entity to retrieve verified entity identification information from the distributed database and to confirm that the identity attribute was verified by an authorized GRIP.

Examples implementations relate to payment tokens. An example includes a customer computer creating a first data buffer, with a set of customer-specified parameters, signing the first data buffer with a customer private key, associating a customer public key to the signed first data buffer to create a first data record that is communicated to a service provider. The service provider computer creates a second data buffer with a set of service provider-specified parameters, signs the second data buffer with a first private key of the service provider, associates a first public key of the service provider to the signed second data buffer to create a second data record, combines the first and second data records, signs the combined data record with a second private key of the service provider, and associates a second public key of the service provider to the combined data record.

Methods and systems are provided for an online system for patient control of a medical prescription. In one example, a method is provided for transmitting a prescription to a first pharmacy in response to a patient selecting the first pharmacy for a first fill of the prescription. The method may further include transmitting the prescription to a second pharmacy in response to the patient selecting the second pharmacy, different than the first pharmacy, for a second fill of the prescription.