A method for optimized validation of a blockchain transaction through the use of a parallel database and date management includes: receiving a new blockchain transaction that includes unspent transaction outputs; identifying, in a parallel database, a start date for a blockchain wallet involved in the new transaction; identifying a subset of blocks in the blockchain that have been added to the blockchain since the start date; validating the new blockchain transaction by validating the unspent transaction outputs using the subset of blocks; and, if the validation is successful, adding the new transaction to the blockchain, or, if the validation is unsuccessful, notifying the submitter of the failed validation.

An example operation may include one or more of receiving a request which identifies a data value, reading, from a distributed blockchain storage, one or more data other data values that are related to the identified data value and which are previously stored thereon, determining whether the identified data value satisfies one or more compliance attributes based on the one or more other data values, and generating an output based on the determination.

In accordance with an exemplary embodiment of the present invention, a method for providing a liquidity pool-based cryptocurrency transaction brokerage service, the method being performed by a processor executing instructions stored in a memory, includes a code providing step of providing payment codes for service supported cryptocurrencies to an account of a buyer in response to a purchase request of the buyer for a transaction target product registered by a seller, a payment confirmation step of confirming whether a payment stablecoin for which a payment cryptocurrency corresponding to the payment code selected by the buyer is exchanged through a payment liquidity pool is paid from the account of the buyer, a coin delivery step of delivering the payment stablecoin to an account of a service provider, and a cryptocurrency settlement step of delivering a settlement cryptocurrency for which a settlement stablecoin paid from the account of the service provider is exchanged through a settlement liquidity pool to an account of the seller.

There is provided a wireless communication device that includes a communication unit that performs wireless communication with a connection device, and a control unit that encrypts a wireless communication channel with the connection device on the basis of a digital certificate issued by a certificate authority server. The communication unit receives payment information and a valid type of payment from the connection device via the encrypted wireless communication channel. The control unit determines a payment server on the basis of the valid type of payment and causes the communication unit to transmit a payment request based on the payment information to the payment server.

Mechanisms for efficiently transferring multiple unspent transaction output (UTXO) tokens in a blockchain network operating a UTXO-based token transaction model are disclosed herein. These methods allow for the use of less computer processing and network bandwidth resources in the transfer of blockchain items, particularly in blockchain schemes with lineage tracking mechanisms (e.g. as may allow for clawback of tokens). Some embodiments comprise generating a delegated account and transferring the UTXO tokens into the delegated account. The ownership of the delegated account can then be transferred to another use of the blockchain network in a single transaction, thereby avoiding the need to individually transfer the UTXO tokens and incur the memory and computational resource burden and costs associated with therewith.

This application relates to a data processing method and apparatus, a computer device, and a storage medium. The method includes: detecting, for each block in a first block file, a to-be-maintained transaction record in the block; selecting, from a hash tree of the block, nodes used for proving that the transaction record belongs to the block; constructing a node maintenance tree according to the selected nodes; storing the transaction record at a corresponding leaf node of the node maintenance tree; updating an association between a block head of the block and the node maintenance tree storing the transaction record to a second block file, the block head of the block being adjacent to a block head of a previous block in the second block file; and deleting the first block file after the update processing for the each block is completed. The solutions of this application can save storage resources.

Systems and techniques to facilitate transaction management in NFT-directed environments within an NFT platform are illustrated. One embodiment embeds an anchor into an application for utilizing tokens, wherein the anchor includes a verifier and an identifier unique to the application. The method verifies, using the verifier of the anchor, that a token is compatible with the application. The method imports the token into the application. The method associates the anchor with a lock, wherein the lock governs access to content of the token. The method identifies a completed transaction that changes access rights associated with the token, wherein the transaction is identified using at least one of information included in the anchor and information included in the lock. The method transmits, to a party to the transaction, a lock value, wherein the lock value, when detected by the lock, allows the party to access the token.

A method and system for computing a trust score for a digital exchange is disclosed. A first counter value associated with a digital exchange is requested from a counter data store. The first counter is calculated using a first algorithm based on a set of transactions monitored in real-time at the digital exchange. Historical transaction data is accessed from the digital exchange. The historical transaction data corresponds to the set of transactions used to calculate the first counter value. A second counter value is determined using the first algorithm based on the historical transaction data. A trust score associated with the digital exchange is determined based on a comparison of the first counter value and the second counter value.

A system and method for viewing a virtual digital object created from components having cryptocurrency value includes receiving a selection of at least one of an avatar, a captured image of the user or a third party, or a digital scene and receiving a selection of the virtual digital object for display on the selected avatar or captured image or within the digital scene. The virtual digital object includes metadata relating to at least one of cryptocurrency value of the virtual digital object, creation of the virtual digital object, and rules governing use and ownership of the virtual digital object. The user may manipulate the displayed virtual digital object within the display and may elect to display at least part of the metadata (e.g., price) along with the virtual digital object. The display of the virtual digital object may be captured and forwarded via a messaging or social media application.

When a consumer checkouts out, the transaction interface presents a buy now pay later option selected by the consumer for payment of a transaction. Consumer information is collected through the interface and a registered financial institution (FI) is presented the transaction details and information for servicing a loan. Terms are provided from the FI and presented to the consumer through the interface. Acceptance by the consumer causes a smart contract with the terms and parties of the loan to be generated in a blockchain (BC) and payment processed by the BC by transferring funds from a FI wallet to a retailer wallet associated with the transaction.