Abstract: Aspects of the disclosure relate to methods, systems, and apparatuses for improving speed of transaction processing in payment systems using a proof of cache system. The proof of cache system may be used to validate transactions using cached keys stored on Directed Acyclic Graph (DAG) nodes that are available. The cached keys may be encrypted using Argon2d cryptographic hashing.

Abstract: An authentication system may receive an authentication MAC, an integrity MAC, and data transmitted from a payment application and a payment terminal. A local integrity MAC may be generated using the data as an input to a first cryptographic operation. The system may compare the local integrity MAC to the received integrity MAC to authenticate the received integrity MAC. A local authentication MAC may be generated using a second cryptographic operation and compare the local authentication MAC to the received authentication MAC. The system may authenticate the payment application in response to a successful authentication of at least one of the received authentication MAC or the received integrity MAC.

Abstract: A provisioning system is provided for terminals such as point of sale terminals. An interface device interfaces with a smart card and a provisioning server, providing initialization keys and security codes that are stored on the smart card. At a terminal, an initialization key from the smart card may be provided to the terminal if a correct security code is entered at the terminal. The terminal may then provide a terminal authorization package to the smart card. The terminal authorization package is stored on the smart card. At the interface device, the terminal authorization package is provided to the provisioning server. The terminal may then securely communicate transactions with an issuer server.

Abstract: Examples described herein include conducting secure financial transactions in the metaverse using digital avatars. This is done by creating a payment avatar in the metaverse by inculcating a transaction's intent and displaying transaction packet data on one or more virtual billboards in a transaction route. The payment avatar can travel from the sender to the receiver's location on the metaverse platform and capture the transaction packet data from the one or more billboards using the one or more decryption keys. In this manner, funds can be securely transferred in the metaverse by preventing unauthorized access to the transaction packet data.

Abstract: Systems and methods for expediting math-based currency (“MBC”) transactions. One method includes receiving a request for a pending MBC transaction, the request include an MBC address of a first party, an MBC address of a second party, and an amount of MBC to be transferred and determining a balance of MBC associated with the MBC address of the first party based on accessing a listing of address balances. Further the method includes in response to determining a threshold likelihood of success of confirming the pending MBC transaction, generating and formatting a guarantee identifier and embedding a copy of the guarantee identifier in a field of the pending MBC transaction. Further the method includes transmitting the guarantee identifier and transferring the amount of MBC from the MBC address of the first party to the MBC address of the second party based on verifying the pending MBC transaction.

Abstract: Various embodiments of the present disclosure provide techniques for modifying a value of a credential-less exchange in near real time using a plurality of identifier mappings, member interfaces, and exchange modifiers. The techniques may include receiving an exchange request for executing a value-based exchange that is indicative of a universally unique ephemeral key (UUEK) and one or more request attributes. The techniques include identifying an exchange data object based on the UUEK and identifying a user exchange modifier for the exchange request based on the exchange data object and the request attributes. The techniques include generating a modified exchange value for the exchange request based on the user exchange modifier and providing an exchange authorization request to a member platform with the modified exchange value.

Abstract: The present disclosure discloses a method for a UWB-based payment service. A method of a first electronic device using UWB communication, of the present disclosure, may comprise the operations of: receiving, from a second electronic device, an initiation message for UWB ranging, which includes a random number generated by means of the second electronic device, transmitting, to the second electronic device, a response message to the initiation message, which includes identification information about the first electronic device encrypted using a session key generated on the basis of the random number, receiving, from the second electronic device, a transaction information message including request type information indicating the type of request associated with a payment, and transmitting, to the second electronic device, a payment information message including response data based on the request type information.

Abstract: Methods that control use, trace ownership and authenticity of digital assets and/or brandmarks in a metaverse environment. The methods involve obtaining a first set of control properties associated with a digital asset and a second set of control properties associated with a brandmark. The first set of control properties define first usage rules for rendering the digital asset in the metaverse environment in which a user is immersed into a virtual environment and the second set of control properties define second usage rules for rendering the brandmark in the metaverse environment. The methods further involve determining whether the digital asset is compatible with the brandmark based on the first set of control properties and the second set of control properties and rendering the digital asset with the brandmark in the metaverse environment based on determining that the digital asset is compatible with the brandmark.

Abstract: This document describes techniques for performing dynamic transfer operations based on a blockchain ledger without needing to perform computationally expensive cryptographic hash reversal operations. In some cases, an example system stores a hashed identifier on a blockchain ledger, along with one or more ledger values like an account balance value and/or a payout amount value. The example system may store un-hashed sensitive backend data on a private backend database. When the example system receives an event notification, the system extracts an identifier from the notification, hashes the identifier, and uses the hashed identifier to retrieve the blockchain ledger. The system then determines whether the ledger value(s) satisfy a condition. If so, the system uses the hashed identifier stored on the blockchain ledger to query the backend database for an account identifier, maps the account identifier to a blockchain wallet, and executes a blockchain transfer operation to the blockchain wallet.

Abstract: A system for sharing a distributed revocation list on a blockchain includes circuitry that identifies an access attempt by a wallet on a first blockchain network, and adds the wallet to a blacklist. The blacklist identifies the wallet as suspicious. The circuitry generates a soulbound token, and airdrops the soulbound token into the wallet. The soulbound token identifies that the wallet belongs to the distributed revocation list and identifies the wallet as a suspicious wallet to blockchain networks.

Abstract: Disclosed are examples of systems, apparatus, devices, computer program products, and methods implementing aspects of a decentralized content fabric. In some implementations, one or more processors are configured to provide fabric nodes of a network, including a first fabric node receiving a client request to perform one or more actions with respect to digital content corresponding to a plurality of content object parts maintained in the network. A lookup is performed on a blockchain ledger in a first blockchain to locate a digital instrument cryptographically linked to a user identifier (ID) of an owner of the digital content. The first fabric node grants the client request based on determining that a user ID associated with the client request matches the user ID of the owner of the digital content. The one or more actions are then performed through a blockchain transaction in the first blockchain or another blockchain.

Abstract: Images capture an object that a person carries into a frictionless store as a potential frictionless return item. When the potential frictionless return item is placed on a shelf or a countertop in a designated area, the potential frictionless return item is identified as a returned item. A transaction history linked to an account of the person is retrieved and the returned item matched to a previously purchased item in the transaction history. Assuming return conditions are met, the account is automatically credited an item price associated with the previously purchased item and a user interface is automatically initiated on a registered mobile device of the person providing a receipt for the refund and the return. The person may then leave the store or continue shopping in the frictionless store and the person and any items taken by the person are tracked for frictionless purchase.

Abstract: A payment includes: in response to a received payment request message, sending a security verification request message to a security control system, the security verification request message is used to instruct the security control system to perform security verification according to security verification information; receiving security verification result information sent by the security control system; when the security verification result information indicates that the security verification is passed, sending a first notification message to the SDK, the first notification message instructs the SDK to notify the host program to display a user verification page to prompt the user to enter the first user verification input information, the first user verification input information is used for the host program server to perform user verification to obtain user verification result information; when the user verification result information indicates that the user verification is passed, initiating a payment requ

Abstract: Systems, devices and processes for electronic commerce payment processing using a handle and a mobile device with a mobile wallet application installed thereon. The handle may be used at a merchant website to process the electronic commerce payment for instead of providing payment information and/or personally identifiable information. That is, the handle may not include payment information and/or personally identifiable information.

Abstract: A wireless communication device includes first and second wireless communication interfaces for communicating with a second device. The first wireless communication interface communicates according to a first wireless communication protocol and the second wireless communication interface communicates according to a second wireless communication protocol. The second wireless communication protocol is associated with a higher data rate and a higher power consumption than the first wireless communication protocol. The second device sends a message to the wireless communication device. Based on that message, certain hardware of the wireless communication device is enabled, including the second wireless communication interface. The wireless communication device and the second device then establish a connection according to the second wireless communication protocol and communicate via that connection.

Abstract: Systems and methods for executing a batch of electronic transactions. One method may include: receiving, at a user interface of an information handling device associated with the real time transaction system, a selection to import a transaction file, wherein the transaction file comprises a listing of a plurality of transaction requests; identifying, via analysis of the transaction file, one or more characteristics associated with each of the plurality of transaction requests in the listing; determining, based on the identified one or more characteristics, whether a subset of the plurality of transaction requests are deficient; isolating, responsive to the determining, the subset from a remainder of the plurality of transaction requests; and facilitating, responsive to receiving user authorization input, a transaction process for each of the plurality of transaction requests in the remainder.

Abstract: Presented are cryptographic digital assets for retail products, methods for making/using such cryptographic digital assets, and computing systems for generating, intermingling, and exchanging blockchain-protected products. A method for provisioning cryptographic digital assets associated with retail product transfers includes broadcasting notifications of a future transaction of a retail product, and receiving, over a distributed computing network from the computing devices of multiple users, requests to participate in the transaction. A select number of users is added to a virtual line associated with the retail product transaction; from the virtual line, a first user is selected to receive the retail product and a second user is selected to receive a cryptographic digital asset containing a digital retail product and a unique digital asset code.

Abstract: A shoulder rest (30) for a stringed instrument with a support element (32) extending in a longitudinal direction (L) for resting on the shoulder and/or chest of the player, on which a number of hinged clamping units (34) are arranged, is intended to be adaptable in a particularly simple manner to different geometric requirements. For this purpose, the shaft (50) of the or each clamping unit (34) is mounted in each case by means of integrally formed pivot pins (58) in an associated pivot bearing (55), the bearing shells (60) of which are designed in accordance with the invention in each case in the form of an arc segment which does not engage around or enclose the pivot pin (58) completely, but only over a certain arc length. The shaft is preferably positioned off-center and thus enables particularly simple and fast dimensional adjustments.

Abstract: Computer-implemented methods and systems for implementing smart contract modules on a decentralized network are disclosed.

Abstract: Presented herein are one or more embodiments with novel techniques of: defining an asset comprising at least one private cryptographic key, each private cryptographic key being associated with an owner of the asset; generating a registry comprising at least one public cryptographic key; generating a smart contract comprising at least one rule relating to an automated generation of one or more blockchain transactions to enable a transfer to be made in respect of the asset; and using a computing agent to evaluate and/or execute the at least one rule of the smart contract. Thus, one benefit provided by the invention is that it allows the secure distribution of costs and income for an asset registered and maintained on the Blockchain, which, in turn increases the capability of such assets to meet the real-world needs of various entities such as the asset itself and investing parties.