A method for maintaining database integrity comprises: receiving event data from a producer; converting the received event data to a standard set of ledger entries; publishing the converted entries to a database; determining if two accounts in the database balance out; performing a remedial action to maintain the database integrity if the accounts do not balance.

A digital wallet computer system includes a messaging application programming interface (API) configured to receive funds transfer messages in a first format, a message queue configured to receive funds transfer messages from the messaging API in a second format, and at least one processor storing instructions. The instructions cause the at least one processor to receive a first funds transfer message in response to initiation of a funds transfer request at an electronic gaming device of a plurality of electronic gaming devices and convert the first funds transfer message from the first format to the second format. The instructions also cause the at least one processor to transmit the first funds transfer message to a digital wallet server and automatically cause a funds amount associated with the first funds transfer message to be deposited in an external player account of the player at an external provider server.

Systems and methods may generally include sending an executable application, which when executed, automatically causes a monetary transfer. An example method may include performing, at a first user device, a handshake with a second user device, receiving, during the handshake, an operating capability of the second user device, and configuring, based on the operating capability of the second user device, an executable application, which when executed, automatically causes a monetary transfer to occur. The configured executable application may be sent to the second user device for execution.

Techniques are disclosed utilizing cognitive computing to improve commercial communications from vendors to users. A user's financial account(s) and location may be monitored to determine when a user is within a threshold distance of a vendor. If the user is within the threshold distance the methods and systems disclosed may determine which targeted commercial communications to transmit to the user based upon a shopping profile for the user. The shopping profile may include a dataset indicative of the shopping habits of the user.

Disclosed herein are methods, systems, and devices for solving the technological problem of stabilization of value for transactions during transfer using volatile digital assets. An on-chain scalable solution of value stabilization with privacy is disclosed in addition to a Confidential Multi-chain with Intermediate Stable Account chain structure used to implement the methods. A method to cryptographically conceal the account balances and transacted amounts and collateral while staying publicly verifiable is also disclosed. A method to verify that a payment transaction with collateral between two accounts through the intermediate Stable account is valid without knowing the balances, transacted amounts, nor collateral is disclosed. A method to determine and store a digital asset price in a ledger is disclosed. A method to claim a payment from another account, so that the second account cannot refuse to pay in case is disclosed. Additional methods, systems, and devices are also disclosed.

Provided is an electronic cash-based offline transaction method and system. The method includes: receiving, by a back-end server from a smart card, an anti-replay factor generated by the smart card; determining, by the back-end server in accordance with a predetermined algorithm, whether an abnormal transaction occurs on the smart card, generating, by the back-end server when no abnormal transaction occurs, a security information signature by signing security information with a private key of the back-end server, and transmitting, by the back-end server, the security information and the security information signature to the smart card (S2).

Systems and methods disclosed herein are directed to a scalable and advanced analytics computing platform for distributed ledger data for integrating an entity's legacy systems, distributed ledger systems, and crypto-asset transactions, as well as related metadata. The systems and methods further relate to a custody adapter implementation that enables interactions across multiple custody technology providers, sub-custody providers, and internal custody solutions.

Systems and methods for distributing transaction files among accounts corresponding to a physical card. The method includes receiving a transaction file from a transaction processing entity. The transaction file is associated with a physical card. The method also includes identifying at least one purse segment in the transaction file. Each purse segment corresponds to a transaction associated with the physical card. The method further includes, for each of the at least one purse segments, identifying a purse ID corresponding to at least one account associated with the physical card and extracting transaction data from the transaction file corresponding to the purse ID. The method also includes, for each of the at least one purse segments, storing the transaction data corresponding to the purse ID into a distribution file and transmitting the distribution file to an account processing system.

Methods and systems are presented for providing comprehensive payment transaction services through a digital wallet. The digital wallet enables a user to conduct an electronic transaction with a merchant or another user. In one aspect, the digital wallet may modify a payment arrangement of the electronic transaction. For example, the digital wallet may determine a first payment arrangement that specifies one or more financial instruments and a payment deferral time period for the electronic transaction. Subsequent to processing the electronic transaction, the digital wallet may determine a different, second payment arrangement for the electronic transaction. The digital wallet may modify the electronic transaction based on the second payment arrangement without canceling the electronic transaction. In another aspect, the digital wallet may manage rewards by dynamically withholding rewards, releasing the rewards, and/or distributing at least portions of the rewards to different users.

A system that tracks the funding source of an amount of funds as the funds are transferred between various accounts or balances of various components of the system.