166results about "Currency conversion" patented technology

This disclosure provides techniques to utilize decentralized identifiers (DIDs) and verifiable credentials for secure, privacy-preserving transactions. In one aspect, a method is provided that includes: receiving user information; determining a DID based on the information; providing the DID to a user device; verifying the user's identity by validating the DID and associated verifiable credentials; and performing a transaction based on the verified DID. Other aspects are provided, such as generating a public-private key pair for the user, associating the DID with the public key, and / or creating a DID document stored on a distributed ledger accessible to authorized entities. Further aspects include processing transactions through smart contracts on a blockchain network, which may involve converting central bank digital currency to fiat currency while maintaining user privacy, applying transaction limits based on verified identity attributes, and providing zero-knowledge proofs to auditors to verify compliance without accessing underlying transaction details.

Systems and methods for enabling secure and efficient interoperability between multiple blockchains, particularly for Central Bank Digital Currency (CBDC) issuance and transfer are described. This architecture allows independent blockchains, each managed by different financial institutions or authorities, to exchange digital assets using a unified cross-chain protocol. Key features include smart contracts for locking, minting, unlocking, and burning digital tokens, relayer subroutines for message transfer, and observer nodes for real-time monitoring and reconciliation. Multi-signature wallets ensure that critical actions require approval from multiple parties, enhancing security and compliance. The system supports both reversible and irreversible cross-chain transfers, dynamic load management, and upgradable smart contracts.

In certain aspects of the disclosure, a computer-implemented method includes associating a token with a token identification and associating the token identification with corresponding metadata of the token. The method includes updating and logging changes in the metadata as attributes evolve. The method includes updating token value based on the changes and publishing a real-time token value with selected information about the changes.

The invention relates to the field of multi-currency quotation, in particular to a multi-currency quotation calculation method and device, computer equipment and a storage medium, and the method comprises the steps: obtaining an original data set related to quotation; acquiring instant and historical exchange rate data of the transaction currency to form a market data set; calculating a cost currency estimated value of each cost composition item and summarizing to obtain a direct cost total amount; analyzing the research data to obtain a risk level, and providing a corresponding insurance cover scheme; calculating a cash flow estimated value under the influence of the exchange rate by combining the cash flow, the historical exchange rate and the insurance cover scheme, generating and sorting a contract quotation amount sample set according to a preset gross profit rate, determining the minimum contract quotation by combining the confidence coefficient, and obtaining the final contract quotation amount according to the premium parameter. According to the method for calculating the multi-currency quotation, the problems that the traditional quotation exchange rate has no standardized calculation logic and the decision is lack of quantitative support are effectively solved, accurate cost accounting and risk management and control are realized, and enterprise profit and market competitiveness are balanced.

The invention provides a cross-border trade supply chain risk early warning system based on digital twinning, and relates to the technical field of cross-border trade. The cross-border trade supply chain risk early warning system based on digital twinning comprises an entity layer, a data acquisition layer, a digital twinning modeling layer, a data processing layer, a risk early warning layer, a safety protection layer and an application output layer, and the entity layer is a monitoring object basis of the system and covers all key physical objects in a cross-border trade supply chain; comprising suppliers, logistics carriers, storage facilities, customs nodes and purchasers in the cross-border trade supply chain. The system integrates a multi-source data acquisition module, covers full-dimensional data of policies, logistics, finance, markets, Internet of Things perception and the like, ensures the comprehensiveness of risk factor extraction, improves the coverage of risk identification, greatly improves the accuracy and real-time performance of early warning, and solves the problem that a traditional early warning mode is inaccurate and lagged in evaluation.

The present invention relates to a computer implemented method 600 of effecting peer to peer payments between a payer account and a payee account. The method comprises receiving 601, from a payee device at a payer device associated with a payer account, a payment request message indicating a transaction amount, where the payer account includes tokens corresponding to a monetary value, and sending 603, from the payer device to the payee device, a message including one or more of the tokens together corresponding to a monetary value equal to the transaction amount. At a later point in time, the payer device connects 605 to a blockchain network server and sends 607 a message to record the sending of the one or more of the tokens on a blockchain ledger maintained by the blockchain network server.

In certain aspects of the disclosure, a computer-implemented method includes collecting, via an artificial intelligence module, a first set of data associated with an asset and creating identifiers associated with the first set of data. The method includes collecting a second set of data associated with the asset based on the identifiers and comparing the first set of data and the second set of data based on the identifiers. The method includes determining validation of the first set of data based on the comparison and generating a result of approval or rejection based on the comparison.

We provide computing systems and methods for communicating with customer devices and trusted third parties. [Solution] In the currency conversion system, the network interface receives customer identity data and a request to restore the customer wallet from the customer device. The processor verifies the customer identity data received from the customer device. Once the processor has verified the customer identity data received from the customer device, the network interface communicates a request to a trusted third-party key repository for a first key associated with the customer wallet. The processor uses the first key associated with the customer wallet and a second key associated with the customer wallet to restore the customer wallet.

In certain aspects of the disclosure, a computer-implemented method includes receiving an initial order based on a user input. The method includes mapping out correct steps from the initial order to settlement. The method includes validating instructions at each step. The method includes recording data pertaining to permit the settlement of the transaction.

A method for conversion of digital assets to fiat currency using a secondary blockchain and mirrored accounting includes: receiving transaction data corresponding to a first blockchain transaction processed using a first blockchain, the transaction data including a payer identifier, recipient identifier, and blockchain currency amount; validating an entity as an authorized entity associated with the payer identifier; determining a fiat currency amount based on the blockchain currency amount; generating a second blockchain transaction, the second blockchain transaction including an unspent transaction output, destination address associated with the authorized entity, and the blockchain currency amount and / or the fiat currency amount; confirming addition of the second blockchain transaction to a second blockchain; and initiating a transfer for the fiat currency amount from a first transaction account to a second transaction account, the second transaction account being associated with the authorized entity.

Certain aspects of the present disclosure provide techniques and apparatus for efficiently processing transactions on a. blockchain. An example method generally includes receiving, at a relay service, a request to execute a transaction on a blockchain. Generally, the request includes a request to transfer a quantity of a. first type of token on the blockchain from a transmitter wallet to a receiver wallet identified in the request and incurs a transaction overhead on the blockchain in a. second type of token. The request is modified based on the quantity of the first type of token, the transaction overhead in the second type of token, and a policy defining a source from which the transaction overhead is to be retrieved. The transaction is executed on the blockchain based on the modified request without transferring the second type of token from the transmitter wallet to satisfy the transaction overhead.

The swap check oracle receives a transfer request from a user or a smart contract on a first blockchain, and the request indicates the first digital asset to be transferred. The swap check oracle verifies the authenticity of the user and / or the digital asset and instructs the smart contract to transfer the first digital asset to a storage address on the first blockchain. Another swap check oracle performs similar processing for a second digital asset from a second user on a second blockchain. The central processing server is notified of the successful transfer of the digital assets to the storage addresses on both blockchains, verifies the holding of the digital assets by the storage addresses, and initiates the release of the digital assets to the new parties on both blockchains.

Techniques are provided for localized currency exchange and payment. In one embodiment, the techniques involve a sales system that determines a cost of an item for purchase, displays a foreign currency payment option, receives a selection of a first foreign currency, retrieves a first exchange rate corresponding to the first foreign currency, receives a first foreign currency amount comprising at least one of notes or coins, converts the first foreign currency amount to a first local currency amount based on the first exchange rate, and displays a difference amount between the first local currency amount and the cost of the item.

In certain aspects of the disclosure, a computer-implemented method includes associating a token with a token identification and associating the token identification with corresponding metadata of the token. The method includes updating and logging changes in the metadata as attributes evolve. The method includes updating token value based on the changes and publishing a real-time token value with selected information about the changes.

A system and method for transferring value across user devices is provided. The system includes sending and receiving user devices. The sending and receiving user devices are configured to store value locally on the respective device. The receiving user device is configured to receive a transfer amount sent by the sending user device. The system also includes a transfer server. If the sending user device stores value at least equal to the transfer amount, the transfer server freezes an amount of value at least equal to the transfer amount. The sending user device transfers the transfer amount to the receiving user device as frozen funds to be unfrozen upon receiving confirmation from the user of the sending user device and acceptance from the receiving user device. The transfer occurs only if the sending and receiving user devices are in close physical proximity upon or shortly after the transfer request.

A pathfinding method for choosing a swap path between a start token and a target token on one or more distributed ledger technology (DLT) sources that includes: connecting to a DLT source thereby retrieving DLT source data; constructing a reference graph comprising nodes and edges from the DLT source data; traversing the reference graph, therein iteratively calculating swap efficiencies for all swap paths between a start token and a target token by applying gradient descent to all swap path traversals, and determining a select swap path based on all swap efficiencies. The method may further include pruning the reference graph or traversal, wherein nodes, edges, and / or swaps that are determined to be negligible, are removed from the traversal parameters.

The present disclosure relates to the technical field of computers, and discloses a settlement method and apparatus based on a digital currency wallet system, and the wallet system. A specific implementation of the method includes: opening an umbrella-top wallet and one or more umbrella-bottom wallets corresponding to the umbrella-top wallet; receiving a collected digital currency by using the umbrella-top wallet, and top-to-bottom fund transferring the collected digital currency to the one or more umbrella-bottom wallets; and settling a fund to one or more umbrella-bottom entities in response to one or more settlement requests.

The invention discloses a business request processing method, system, device and equipment, a medium and a program product, and relates to the technical field of data processing, and the method comprises the steps: generating a first processing instruction according to a business request sent by a commercial tenant terminal of a commercial tenant; sending the first processing instruction to a first server of an overseas cooperative bank; sending a second processing instruction to a second server; and transaction detail information and a third processing instruction are sent to the third server, and the third processing instruction is used for instructing the third server to process the transaction detail information after the third server determines that the amount of the second currency is matched with the transaction detail information. And transferring the amount of the second currency corresponding to the merchant from the second currency account of the cross-border clearing mechanism to the second currency account of the merchant. According to the method, the security of the service processing process and the service processing efficiency are improved.

Methods, systems, and devices for data management are described. A blockchain address application may receive a user input to exchange a first amount of a crypto token from the blockchain address application for a second amount of a fiat. The application may display, at a user interface after receiving the user input, an estimation associated with the exchange of the first amount for the second amount. The application may receive another user input to confirm the estimation and transmit, to a custodial token platform, a request to initiate the exchange. The request may cause execution of an on-chain transfer of the first amount of the crypto token from a first blockchain address of the blockchain address application to a second blockchain address associated with the custodial token platform and execution of an off-chain transfer of the second amount of the fiat from the custodial token platform to an external entity.

Described herein are systems and methods for providing the secure transfer of assets between blockchain networks. The system can include a storage device that can store a bridge program that is programmed to perform (i) lock operations that lock native assets from a first blockchain network and mint synthetic assets representing the native assets in a second blockchain network, and (ii) unlock operations that unlock the native assets by transferring the native assets to an address in the first blockchain network in response to the synthetic assets being returned or destroyed. The system can include a computer system that loads and executes the bridge program in a secure computing enclave that provides a trusted execution environment. The computer system can then perform the lock operations and the unlock operations to provide a bridge between the first blockchain network and the second blockchain network.

A digital asset exchange system, digital wallet, and digital asset exchange architecture are provided. The system for digital asset exchange includes an interface configured to receive a digital asset transaction request from a user, and a gateway configured to communicate with one or more exchanges to process the digital asset transaction request.

Provided in the present application are a cross-blockchain transaction processing method, a related device, a storage medium and a product. The cross-blockchain transaction processing method comprises: acquiring from a source blockchain network a cross-blockchain transaction processing request by means of a first interface node, and distributing the cross-blockchain transaction processing request to a first number of repeaters; by means of the repeaters, performing first verification on the cross-blockchain transaction processing request and signing same to generate sub-signatures; by means of a signature aggregation node, after a second number of sub-signatures are received, generating a first signature of a relay system, and sending the cross-blockchain transaction processing request and the first signature to a target blockchain network, such that the target blockchain network performs second verification on the first signature and processes the cross-blockchain transaction processing request, wherein the second number is smaller than the first number. The embodiments of the present application can be applied to various scenarios such as blockchains, virtual digital assets, and security technology. The embodiments of the present application can reduce resource consumption while cross-blockchain security is achieved.

The invention discloses a notarist mechanism-based exchange rate dynamic adjustable cross-chain method and a blockchain cross-chain system, and the method comprises the steps: enabling a transaction sender to exchange funds into cross-chain tokens at an asset manager at first when cross-chain initiation is carried out; and then the cross-chain token is transferred to a target chain in a cross-chain manner by using a Hash time lock contract through the assistance of a notary group. According to the invention, a traditional notarist-based cross-chain mechanism is improved, a new role-fund manager is introduced, and the exchange rate is endowed with a dynamic adjustment capability, so that external market changes can be dealt with in time; meanwhile, a chameleon hash function is used in the scheme, and under the condition that at least one honesty node exists in a payment path, the payment relationship between two transaction parties can be perfectly hidden, so that the relationship privacy of the user is well protected.

In a management system (1) including: a terminal (20A) and a terminal (20B) that are mounted with an application that enables electronic money to be loaded in plural types of currencies; and a server apparatus (10) that manages the electronic money in the plural types of currencies, the terminal (20A) uses a charging service of the application, and sets a charging destination of a cost, a type of a first currency to be paid, and a charged amount of money, the terminal (20B) transmits a payment report in which the type of a second currency has been set, charged money of the cost being paid in the second currency, and the server apparatus (10) includes a receiving / making-payment control unit configured to obtain an amount of money in the second currency that corresponds to the charged amount of money in the first currency on the basis of an exchange rate.

The invention discloses a position contract delivery method, and relates to the technical field of informatization management, and the method comprises the steps: carrying out the preprocessing of a plurality of to-be-delivered position contracts, and obtaining a plurality of groups of processed to-be-delivered position contracts of the same user corresponding to the currency type; obtaining the account amount of each currency in the same group and the to-be-delivered amount of the processed to-be-delivered position contract; determining the priority of delivered currencies and the priority of the to-be-delivered position contract corresponding to the currencies according to the currency types of the same group, the account amount of the currencies and the processed to-be-delivered amount of the to-be-delivered position contract by using the thread in the occupation state; delivering according to the currency priority and the priority of the to-be-delivered position contract; and when it is detected that delivery is completed, the resource use state of the corresponding thread is updated to be an idle state. The method has the advantages and characteristics that delivery is orderly, delivery is clean, the account fund utilization rate is high, the delivery amount is large, the delivery speed is high, and delivery is prevented from entering an endless loop.

The disclosure relates to the technical field of computers. Disclosed are a digital currency management method, apparatus and system. A specific implementation of the method includes: sending one or more first digital currencies to a first currency management apparatus corresponding to a first client, where the one or more first digital currencies belong to one or more second currency management apparatuses different from the first currency management apparatus; and receiving a second digital currency, which is generated by the first currency management apparatus according to the one or more first digital currencies, where the denomination of the second digital currency is equal to the sum of denominations of the one or more first digital currencies.

A system for a mobile digital currency exchange is disclosed. The system may receive a sign-in data. The system may generate an authentication request based on the sign-in data. The system may receive an authentication data. The system may display a trading interface comprising a portfolio drawer based on the authentication data, wherein the portfolio drawer is configured to display an instrument detail and an account summary.

A method is disclosed. The method includes receiving, by a processing computer, a payout validate message for a transaction from an aggregator computer, which receives a payout inquiry message from an originator computer of a plurality of originator computers. The aggregator computer is in communication with the plurality of originator computers. The payout inquiry message and the payout validate message can comprise a transaction amount for the transaction. The processing computer validates the payout validate message, and then transmits a payout validate response message to the aggregator computer. The payout validate response message comprises data regarding validation of the payout validate message. After transmitting the payout validate response message to the aggregator computer, the method includes receiving, by the processing computer, from the aggregator computer, a payout message. The method also includes transmitting, by the processing computer, a payout response message to the aggregator computer.

The present invention relates to a computer implemented method of effecting peer to peer payments between a payer account and a payee account. The method comprises receiving, from a payee device at a payer device associated with a payer account, a payment request message indicating a transaction amount, where the payer account includes tokens corresponding to a monetary value, and sending, from the payer device to the payee device, a message including one or more of the tokens together corresponding to a monetary value equal to the transaction amount. At a later point in time, the payer device connects to a blockchain network server and sends a message to record the sending of the one or more of the tokens on a blockchain ledger maintained by the blockchain network server.

A system and method of transferring digital assets is disclosed. The method can comprises effecting a transaction comprising a user authorizing a transfer of a digital asset from a consumer wallet to an account, updating the blockchain ledger of the first digital asset to reflect the transfer, and characterizing the digital asset as compliant or non-compliant based on evaluating the digital asset for suspicious blocks in the blockchain ledger. Compliant digital assets can be exchanged for fiat currency and deposited in the target account. Non-compliant digital assets can be held in a managed wallet of a custody provider.