Abstract: A method for verified data storage via blockchain includes: storing a blockchain comprised of a plurality of blocks, each comprised of a block header and a plurality of transaction values, the block header including a timestamp; receiving a transaction notification including an entity identifier and data values; validating the data values based on a validation notification received from a verifying entity; generating a new block header comprised of a current timestamp, a block reference value, and a transaction reference value, the block reference value being generated via hashing of the block header included in a most recent block based on the timestamp, and the transaction reference value being generated via hashing of new transaction values including the data values; generating a new block comprised of the generated new block header and the new transaction values; and transmitting the new block to a node associated with the blockchain.

Abstract: A method for conveyance of payment credentials through a third party data source includes: storing, in a memory of a computing device, at least a first public key and payment credentials associated with a transaction account; generating, by a generation module of the computing device, a machine-readable code encoded with at least the first public key; displaying, by a display device interfaced with the computing device, the generated machine-readable code; generating, by the generation module of the computing device, a key pair comprised of at least a private key and a second public key; encrypting, by an encryption module of the computing device, the payment credentials using the private key; and electronically transmitting, by a transmitting device of the computing device, the encrypted payment credentials to a publicly accessible data source.

Abstract: A method for offline transmission of blockchain details includes: storing, in a computing device, a first private key and a currency amount; receiving a first destination address associated with a blockchain network and a transaction amount; generating a second private key; generating a second destination address associated with the blockchain network using the second private key; generating a blockchain transaction including at least the first destination address, the transaction amount, the second destination address, and a remainder amount based on at least the currency amount and the transaction amount; signing the generated blockchain transaction using the first private key; executing a query to replace the first private key with the second private key, wherein replacement of the first private key includes deletion of the first private key from the computing device; and transmitting the generated blockchain transaction.

Abstract: A method for secure storage and distribution of account tokens includes: storing blockchain data comprised of a plurality of blocks, each block including at least a block header and one or more data values, where each data value includes at least an identification value, an account token, and one or more usage rules; receiving a login request including at least a specific identification value and a set of credentials; identifying a specific data value included in the blockchain data where the included identification value corresponds to the received specific identification value; validating the set of credentials based on the identified specific data value and access to the account token included in the specific data value based on the included one or more usage rules; and transmitting the account token included in the identified specific data value in response to the login request upon successful validation.

Abstract: A payment network server for processing a cashless payment transaction via a point-of-sale (POS) terminal associated with a merchant server is described.

Abstract: A method for secure usage of a gift card via blockchain includes: storing a blockchain including a specific data value related to a gift card that includes a gift card number and a first recipient address; receiving a transfer request including the gift card number, a first digital signature, and a device identifier; verifying the first recipient address based on the first digital signature; generating a new data value comprising the gift card number, the device identifier, and a second recipient address; transmitting the generated new data value to a node associated with the blockchain; receiving a redemption request from a second computing system including the gift card number, a second digital signature, and a submitted device identifier; verifying the second recipient address and submit device identifier based on the second digital signature and the device identifier, respectively; and transmitting a result of the verification to the second computing system.

Abstract: A method for transaction authorization includes generation of a master authentication code based on an authorization request for a transaction by a server. The transaction is initiated by a user by way of a transaction application installed on a user-computing device. The server splits the master authentication code into a first authentication code and a second authentication code. The first authentication code is communicated to the transaction application and the second authentication code is communicated to the user by the server. The transaction application generates a response code based on the first authentication code and the second authentication code. The server receives the response code from the transaction application and processes the transaction based on a match between the response code and the master authentication code.

Abstract: A method for preventing unauthorized repeat purchases of a product includes: storing a plurality of purchase data values, each related to a completed financial transaction and including a purchase identifier; receiving an authorization request for a new financial transaction from an external system, the authorization request including a specific identifier; identifying a number of purchase data values where the included purchase identifier matches the specific identifier; and transmitting an authorization response to the external system, the authorization response including (i) an approval of the new financial transaction if the number of purchase data values is below a predetermined number, or (ii) a denial of the new financial transaction if the number of purchase data values is equal to or above the predetermined number.

Abstract: A method for improving consensus in a blockchain network through decentralized grouping includes: identifying, by each node of a plurality of nodes in a blockchain network that manages a blockchain, a plurality of groups, where each is comprised of a subset of nodes; generating, by each node in each subset of nodes, a new block for the blockchain; performing, by each subset of nodes, a first consensus operation among all nodes in the subset of nodes for the new block generated by in the subset of nodes to identify a group consensus block, where each node in the subset of nodes receives the group's group consensus block; and performing, by the blockchain network, a second consensus operation among all groups for the identified group consensus block to identify an overall consensus block, where a majority of groups of the plurality of groups receives the overall consensus block.

Abstract: A method for conveyance of payment credentials through a third party data source includes: storing, in a memory of a computing device, at least a first public key and payment credentials associated with a transaction account; generating, by a generation module of the computing device, a machine-readable code encoded with at least the first public key; displaying, by a display device interfaced with the computing device, the generated machine-readable code; generating, by the generation module of the computing device, a key pair comprised of at least a private key and a second public key; encrypting, by an encryption module of the computing device, the payment credentials using the private key; and electronically transmitting, by a transmitting device of the computing device, the encrypted payment credentials to a publicly accessible data source.

Abstract: The present invention relates to the field of electronic transactions, and provides methods and systems for reducing user interventions necessary for authentication of transactions. In an embodiment the invention implements an authentication server configured to receive from a terminal device an electronic payment transaction request and device IDs corresponding to devices having wireless communication capability that are detected within a wireless communication range of the terminal device. The authentication server selects a payment account for implementing the requested electronic payment transaction, wherein selection of the payment account is based on a determination that one or more of the device IDs received from the terminal device are associated with the identified payment account, and thereafter generates a payment transaction authentication decision.

Abstract: A method for offline transmission of blockchain details includes: storing, in a computing device, a first private key and a currency amount; receiving a first destination address associated with a blockchain network and a transaction amount; generating a second private key; generating a second destination address associated with the blockchain network using the second private key; generating a blockchain transaction including at least the first destination address, the transaction amount, the second destination address, and a remainder amount based on at least the currency amount and the transaction amount; signing the generated blockchain transaction using the first private key; executing a query to replace the first private key with the second private key, wherein replacement of the first private key includes deletion of the first private key from the computing device; and transmitting the generated blockchain transaction.

Abstract: A method for minimizing inter-bank settlement through incremental updates stored via blockchains includes storing three blockchains: a balance blockchain updated periodically that includes an available balance for a plurality of blockchain wallets, a credit blockchain that includes credits made to a blockchain wallet, and a debit blockchain that includes payments made from the blockchain wallet. Holds are placed on related transaction accounts to enable the blockchain wallets to utilize payments made thereto without the need for a transaction account, where the holds are only updated when necessary based on periodic updates to the balance blockchain, thus minimizing settlements performed by the issuing institutions, thus reducing inter-bank settlements and enabling payees to receive payments from a transaction account without their own.

Abstract: A method for determining authenticity of a point of sale device includes: storing a blockchain and point of sale identifier pair, wherein the blockchain is comprised of a plurality of blocks, each comprised of a block header and transaction data values, each transaction data value corresponding to a payment transaction involving a point of sale device associated with the point of sale identifier and includes an indication of approval or denial for the payment transaction; receiving a fraud probability request, the request including the point of sale identifier; identifying a number of transaction data values that include an indication of denial; determine an authenticity value indicating a likelihood that the point of sale device is engaged in fraudulent activity based on a registered latitude and longitude of the point of sale device, the number of transaction data values, and additional criteria; and transmitting the determined authenticity value.

Abstract: 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.

Abstract: A method for awarding blocks in a blockchain for mining based on fee reimbursement to encourage reduction in mining fees includes: receiving a plurality of mining bids, where each mining bid is submitted by a blockchain node in a blockchain network and includes a fee reduction amount; selecting a winning bid of the plurality of mining bids based on the fee reduction amount included in each of the plurality of mining bids; transmitting a notification message to a winning blockchain node that submitted the winning bid; receiving a completed block including a block header and a plurality of data values, wherein the plurality of data values includes a mining data value that includes a destination address associated with the winning blockchain node and a mining fee amount; and verifying the mining fee amount based on at least the fee reduction amount included in the selected winning bid.

Abstract: A method for minimizing inter-bank settlement through incremental updates stored via blockchains includes storing three blockchains: a balance blockchain updated periodically that includes an available balance for a plurality of blockchain wallets, a credit blockchain that includes credits made to a blockchain wallet, and a debit blockchain that includes payments made from the blockchain wallet. Holds are placed on related transaction accounts to enable the blockchain wallets to utilize payments made thereto without the need for a transaction account, where the holds are only updated when necessary based on periodic updates to the balance blockchain, thus minimizing settlements performed by the issuing institutions, thus reducing inter-bank settlements and enabling payees to receive payments from a transaction account without their own.

Abstract: A method for delivering encrypted data through a blockchain with limited transferability includes: receiving, by a receiver of a blockchain node, a transfer submission including at least a transfer token, a recipient address, and an encrypted data message; determining, by a processor of the blockchain node, a number of past transfers for the transfer token in a blockchain associated with a blockchain network that includes the blockchain node; validating, by the processor of the blockchain node, that the transfer token is eligible for an additional transfer based on at least the number of past transfers; generating, by the processor of the blockchain node, a blockchain data value including at least the encrypted data message, the transfer token, and the recipient address; and transmitting, by a transmitter of the blockchain node, the generated blockchain data value to one or more additional nodes included in the blockchain network.

Abstract: The disclosure relates to methods and systems for reducing user interventions necessary for authentication of transactions. The disclosure involves (i) receiving from a merchant terminal device, a request for initiating an electronic payment transaction, (ii) retrieving one or more authentication waiver records associated with the transferor payment account, (iii) comparing transaction parameters extracted from the received request with transaction parameters defined in the retrieved one or more authentication waiver records, and (iv) responsive to identifying a retrieved authentication waiver record having transaction parameters that match the transaction parameters extracted from the received request, transmitting to an issuer server (a) an instruction for initiating transfer of the transaction amount, and (b) information identifying the initiated transfer of the transaction amount as exempt from a payor identity authentication requirement.

Abstract: A method for authentication of coupons using a blockchain includes: storing transaction data for a payment transaction, wherein the transaction data includes at least a transaction amount; receiving an identification value; receiving a block included in a blockchain, wherein the block includes at least a block header and a plurality of transaction values, each transaction value including at least a coupon identifier and coupon data; executing a query on the received block to identify a specific transaction value of the plurality of transaction values where the included coupon identifier corresponds to the received identification value; and executing a query on the memory to update at least the transaction amount included in the stored transaction data based on the coupon data included in the identified specific transaction value.