A computer implemented method and apparatus for optimized online presence blockchain trust management to avoid online fraud. The method comprises receiving a first email message from a mail server, wherein the first message is from a seller to a buyer confirming an online transaction; receiving a second email message from the mail server, wherein the second email message is from a payment service to the buyer confirming a payment for an online transaction; extracting information from the first email message and the second email message; correlating the first email message and the second email message when the first email message and the second email message references a same online transaction; anonymizing personal information of a buyer that was extracted from the first email message and the second email message; generating a block of data related to the transaction from the extracted information regarding the online transaction and the anonymized information of the buyer; encrypting the generated block of data related to the transaction; and publishing the encrypted block of data to a blockchain.

A system and method for provisioning of scalable cross domain contextual vaulting is described. An initiation of a checkout at a partner merchant by a consumer client is received at a payment provider. A set of funding instruments vaulted in the consumer client's digital wallet associated with the payment provider is identified. Promotions offered by each of the set of funding instruments at the partner merchant are further identified. A ranking of the set of funding instruments is determining based on the promotions offered. payment options for the checkout based on the ranking of the set of funding instruments are presented to the consumer client.

Systems and methods for facilitating a transaction between a first entity and a second entity using a digital currency are described. In some aspects, a computing node participates in a private distributed ledger for a financial institution and stores one or more transaction blocks representing transactions in a digital currency. The digital currency is issued by the financial institution and is fixed with respect to a fiat currency. The computing node is configured to receive a transaction for transferring an amount of digital currency from a first entity to a second entity, generate a new transaction block representing the transaction, transmit the new transaction block to other computing nodes participating in the private distributed ledger, receive an indication of validity of the new transaction block, and insert the new transaction block into the private distributed ledger.

A system and method for transacting cryptographic currency is described. An exchange database associated with a number of buyers and sellers is maintained at a host computer system. Cryptographic currency is received from one or more of the sellers at an exchange wallet associated with the exchange database. A match is created within the exchange database, including a buy offer for the cryptographic currency from a buyer and a sell offer for the cryptographic currency from a seller. A cryptographic currency withdrawal request is received from the buyer, and in response, the host computer system determines that a total amount of cryptographic currency represented in the exchange database matches a total amount of the cryptographic currency within the exchange wallet, transfers the cryptographic currency to the buyer's wallet, and updates the exchange database by deducting a first value of the cryptographic currency that is transferred to the buyer's wallet.

According to an embodiment, a method for automatically providing a cryptocurrency to a recommender using social networking service (SNS) propagation comprises a recommending step in which a blockchain membership node of a member having membership in a proof-of-expansion (PoX) blockchain platform server recommends an identity (ID) of an SNS friend of the member to the PoX blockchain platform server, a registering step in which the PoX blockchain platform server newly registers the ID of the SNS friend as a blockchain membership node, and a reward rate determining step in which the PoX blockchain platform server determines a reward rate for each blockchain member in association with the number of SNS friend IDs that the blockchain member recommends.

Provided herein is a computer-implemented method for provisioning a token to an appliance. The method includes registering an original account identifier to an appliance, wherein the original account identifier is not associated with any user when registered, associating a device token to the original account identifier, wherein the device token is stored by the appliance, associating a user account identifier to at least one of the device token and the original account identifier, receiving, from the appliance, a transaction request for a transaction, the transaction request including the device token, identifying the user account identifier based on the device token, determining that the transaction is authorized based at least partially on the user account identifier and the original account identifier registered to the at least one appliance, and in response to determining that the transaction is authorized, processing the transaction. A system and appliance are also disclosed.

An Electronic Health Record (EHR) data blockchain system configured to allow multiple entities (e.g., pharmacy industry entities that can act as data, service, product providers, and consumers) to connect to an EHR patient transaction blockchain (e.g., EHR-DATA-BC) and an EHR Data Patient Portal (e.g., EHR-Data-PP) to provide a centralized location for messages and subsequent edits to ensure uniform message data is presented. The EHR data blockchain system can include an EHR Data API, an EHR patient transaction blockchain API, and an EHR patient transaction blockchain. The EHR Data API can access and retrieve patient identifiable information (PII) and generate a non-patient-identifiable Single Purpose Patient ID (SPPID) for a particular patient. The EHR patient transaction blockchain API (e.g., EHR-DATA-BC-API) can store the SPPID, store particular, discrete data retrieved from the EHR for a patient, execute smart contracts, and control the execution of digital currency transfers, among other functions.

An Electronic Health Record (EHR) data blockchain system configured to allow multiple entities (e.g., pharmacy industry entities and healthcare providers that can act as data, service, product and service providers, and consumers) to connect to an EHR patient transaction blockchain (e.g., EHR-DATA-BC) and an EHR Data Patient Portal (e.g., EHR-Data-PP) to provide a centralized location for messages and subsequent edits to ensure uniform message data is presented. The EHR data blockchain system can include an EHR Data API, an EHR patient transaction blockchain API, and an EHR patient transaction blockchain. The EHR data blockchain system can provide workflow on the blockchain that can utilize smart contracts to define workflow processes, expected outcomes, and financial costs. When a prescription transaction is complete, it will result in the settlement of each of the smart contracts that were added to the prescription workflow.

Methods, apparatus, and system to provide access to a blockchain computer system as a service to a non-blockchain computer system through an application programming interface, wherein the application programming interface is configured through a portal computer and wherein application programming interface calls are implemented by an application programming interface processing computer.

Disclosed is a method for trading private information access rights based on a distributed ledger, performed by a distributed network system including a plurality of distributed servers to perform authentication and store a token, the method including giving rights to use the token to a buyer terminal by performing authentication upon receiving a token trade request, permitting a service application server to use the token by performing authentication upon receiving a token usage request, providing, by the service application server, a predefined service by using the token and broadcasting usage detail of the token to the distributed network system, and updating, by the distributed server, the usage detail of the token.