Mastercard International Incorporated

Mastercard International Incorpoated

Chandan Garg

Jaipal Singh Kumawat

Ankur Arora

Shubham Kumar

Aditya Koduri

Saugandh Datta

Awinash Pandey

Madhavi Sharma

Sandeep Parvathareddy

Alok Kumar Dwivedi

Aishwarya Mallik

Ankur Sarwate

Ayushi Jain

Sidharth Goel

Ankur Mehta

Gurpreet Atwal

Anurag Aggarwal

Puneet Vashisht

Apoorva Dixit

Puneet Keshtwal

Abhinav Thukral

Nikhat Parveen

Hardik Wadhwa

Ved Pratap Singh Chauhan

Rahul Lamba

Ajay Panwar

Shubham Jain

Meenakshi Shandilya

Yashika Sharma

A method for expedited inclusion of pre-authorized blockchain transactions in new blocks. A blockchain node will utilize a traditional pending transaction pool of unconfirmed transactions, but will also utilize a new transaction pool that is comprised of pending blockchain transactions that have been confirmed, but have not yet been added to the blockchain. When a new block is being generated by a node, they can select pending transactions from the confirmed transaction pool and include them in the new block without repeating the confirmation process, which can save time and computing resources, thereby enabling the new block to be generated faster and increasing the chance that the new block will be the one that is validated and added to the chain. Additional rules and criteria can be applied to ensure that transactions that are in the confirmed transaction pool are added to a new block in a timely fashion.

Method and system for authorization and settlement in blockchain transactions

A method for dynamic selection of transactions for inclusion in new blocks added to a blockchain includes: receiving, by a blockchain node in a blockchain network that manages a blockchain, a plurality of proposed transactions; sorting, by the blockchain node, each proposed transaction into one of a plurality of transaction groups; identifying, by the blockchain node, a selection of proposed transactions based on one or more dynamic selection criteria, where the selection of proposed transactions includes one or more proposed transactions from one or more of the plurality of transactions groups based on the one or more dynamic selection criteria; generating, by the blockchain node, a new block including a new block header and the identified selection of proposed transactions; and distributing, by the blockchain node, the generated new block to a plurality of additional nodes included in the blockchain network.

Method and system for dynamic addition of blocks in a blockchain

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.

Method and system for control of PII through limiting transfers on blockchain

A method for optimizing blockchain storage size through use of relative values includes: receiving, by a blockchain node in a blockchain network that manages a blockchain, a plurality of blockchain data values, each including unspent transaction outputs, at least one destination address, and, for each destination address, an original currency amount; identifying a base value; modifying the original currency amount included in each blockchain data value to be a relative currency amount based on a difference between the identified base value and the original currency amount; generating a new block, the new block including a block header and the modified plurality of blockchain data values; and transmitting the generated new block to a plurality of additional nodes in the blockchain network.

Method and system for optimization of data storage for distributed ledgers

A method for improving consensus in a blockchain network through sampling includes: executing, by a processor of a blockchain node in a blockchain network that manages a blockchain, a script to identify a first sample comprised of a subset of nodes of a plurality of nodes in the blockchain network, wherein nodes included in the subset of nodes are randomly selected; performing, by the subset of nodes comprising the first sample, a first consensus operation among all nodes in the subset of nodes to identify a sample consensus block for the blockchain, where each node in the subset of nodes receives the sample consensus block; and repeating, in the blockchain network, executing the script and performing the first consensus operation for a plurality of additional samples, wherein nodes included in the subset of nodes for each additional sample are randomly selected.

Method and system for improved consensus using bootstrap resampling

A method for propagating survival of cryptographic currency after inactivity over a predetermined period of time in a blockchain through the use of smart contracts includes: receiving a propagation request that includes unspent transaction output addresses, a digital signature, and a recipient address; generating a smart contract that is configured to self-execute after a predetermined period of time to initiate transfer of cryptographic currency from the output addresses to the recipient address; submitting the smart contract to a node in a blockchain network for addition to the blockchain; monitoring for new blockchain transactions involving any of the unspent transaction output addresses; generating a new smart contract to update the unspent transaction output addresses based on new blockchain transactions; and submitting the new smart contract to a node in a blockchain network after updating.

Method and system for a failsafe mechanism for blockchain wallets

A method for periodic aggregation of blockchain transactions for reduced processing times and bandwidths includes: storing at least a cryptographic key pair comprising a private key and a public key and a plurality of unspent blockchain transactions, each unspent blockchain transaction including at least an output address and transaction amount; generating a digital signature using the private key; generating a recipient address using the public key; generating a new blockchain transaction after satisfaction of a trigger condition, the new blockchain transaction including each of the plurality of unspent blockchain transactions as inputs, the digital signature, the recipient address, and a transfer amount based on a summation of the transaction amount for each of the unspent blockchain transactions; and transmitting the new blockchain transaction to a node in a blockchain network.

Method and system for improved blockchain performance through aggregation

The present disclosure provides a description of exemplary systems and methods for enabling faster proof-of-work in a distributed ledger. The methods and systems may include a processor which may generate a first hash having a first difficulty level as a first proof of work associated with a first plurality of selected transactions. The first hash not being accepted by a distributed ledger network. The processor may receive a second plurality of selected transactions and determine a second difficulty level for a second proof of work associated with the second plurality of selected transactions. The processor may compare the first difficulty level to the second difficulty level. In response to determining that the first difficulty level is less than the second difficulty level, the processor may generate a second hash as a second proof-of-work for the second plurality of selected transactions having a residual difficulty level.

Method and system of faster proof-of-work in distributed ledger

A method for processing cryptographic currency transactions through user-based blockchain ledgers includes: receiving, by blockchain node in a blockchain network, a new cryptographic currency transaction from a first computing device including unspent transaction outputs, a sender public key, receiver public key, destination address, and cryptographic currency amount; identifying, by the blockchain node, a sending blockchain associated with the sender public key including the unspent transaction outputs; validating, by the blockchain node, the sending blockchain by generating a hash value using the sending blockchain and comparing the generated hash value to a historic sender hash value associated with the sender public key; generating, by the blockchain node, a new sender hash value by hashing a combination of the sending blockchain and the new cryptographic currency transaction; and transmitting, by the blockchain node, the generated new sender hash value to a plurality of additional nodes in the blockchain network.

Method and system for user-based distributed ledgers

A method for confirming a blockchain transaction utilizing output from a transaction still waiting inclusion in a blockchain includes: storing, in a node of a blockchain network, a plurality of waiting blockchain transactions not included in a blockchain associated with the blockchain network; receiving a new blockchain transaction including a transaction amount, destination address, digital signature, and an unspent transaction output, where the unspent transaction output is a reference to one waiting blockchain transactions; validating the new blockchain transaction including confirmation of the one of the waiting blockchain transactions; generating a new block including a block header and a plurality of blockchain data entries including at least the new blockchain transaction and the one of the waiting blockchain transactions; and transmitting the generated new block to a plurality of additional nodes in the blockchain network for confirmation.

Method and system for optimizing transaction flow for blockchain mining and confirmation

Embodiments provide methods, and systems for facilitating a payment transaction utilizing a pre-defined radio frequency allocated by an agency to a merchant. A user may open an application provided and maintained by a payment network on a user device and input the pre-defined radio frequency associated with the merchant. The payment network server is configured to establish a secure radio frequency connection between the user device and a merchant server of the merchant. Post establishment, the user may proceed to make a payment transaction to the merchant by choosing a payment method and authenticating his/her identity. The payment transaction is authorized by an issuer of the payment account and is forwarded to the payment network server. The payment network server is configured to fetch acquirer information of the merchant account and process the payment. Post completion, a confirmation message is sent to the user device over the secure RF connection.

Methods and systems for facilitating a payment transaction over a secure radio frequency connection

A method for ensuring precedence for the processing of a blockchain transaction to prevent loss of cryptographic currency includes receiving a new blockchain transaction by a blockchain node in a blockchain network, confirming the new blockchain transaction including identifying a precedence transaction that was previously conducted and stored in the blockchain that involves both blockchain wallets included in the new blockchain transaction, including the new blockchain transaction in a new block that is generated, and distributing the new block to additional nodes in the blockchain network for confirmation and addition to the blockchain.

Method and system for prevention of lost currency in blockchain networks to missing wallets

A method and system for awarding blocks in a blockchain for mining based on commitment to a blockchain network. The method includes receiving, by a receiver of a processing server, a plurality of mining bids, where each mining bid is submitted by a blockchain node in a blockchain network and includes at least a declaration, the declaration being a period of time in which the blockchain node agrees to defer spending an earned mining fee; selecting, by a processor of the processing server, a winning bid of the plurality of mining bids based on at least the declaration included in each of the plurality of mining bids; and transmitting, by a transmitter of the processing server, a notification message to a winning blockchain node that submitted the winning bid.

Method and system of using miner commitment to reward proofs

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.

Method and system for optimizing blockchain parsing using a wallet's static characteristics

A method for ensuring compliance with data localization rules and regulations for blockchain data values in a blockchain network includes: a local node in a first country receiving a submission for a new blockchain transaction; identifying that the new blockchain transaction involves at least one entity in a foreign country; confirming the new blockchain transaction; transmitting the confirmed blockchain transaction to a foreign node located in the foreign country; generating a new block in the local node that includes the confirmed blockchain transaction; and distributing the new block to other nodes located in the same country as the local node.

Growing community of inventors

Punjab, India

Chandan Garg