Patents by Inventor Steven Charles Davis

Steven Charles Davis has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10715331
    Abstract: The disclosure relates to posting auditable, immutable data to a blockchain. The method includes receiving a blockchain comprised of a plurality of blocks, each block having at least a block header and one or more transaction values, where each transaction value includes at least a transaction hash, and receiving a data file associated with a specific transaction hash included in a block in the blockchain, where the data file includes one or more variables. The method includes modifying at least one of the one or more variables included in the data file, generating a new hash value via application of one or more hashing algorithms to the modified data file, and generating a new transaction value based on at least the generated new hash value and the specific transaction hash. The method includes digitally signing the generated new transaction value, and electronically transmitting the signed new transaction value.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: July 14, 2020
    Assignee: MASTERCARD INTERNATIONAL INCORPORTED
    Inventor: Steven Charles Davis
  • Publication number: 20200153630
    Abstract: A method for verifying proof of assertion of a value using a hash-oriented transaction scheme includes: receiving a confirmation request; identifying a confirmation message, wherein the confirmation message includes at least one or more chain values and is one of: included in the confirmation request or stored in a block included in a blockchain and identified using a reference identifier included in the confirmation request; identifying a declaration message, wherein the declaration message includes at least an asserted value and an identity hash value; generating a check hash value by hashing at least the asserted value and the one or more chain values; verifying the check hash value using the identity hash value; and transmitting a result of the verification of the check hash value in response to the received confirmation request.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 14, 2020
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20200076577
    Abstract: A method for generation of blocks for a partitioned blockchain includes: storing blocks comprising a partitioned blockchain, wherein each block includes a header and transaction entries; receiving transaction data entries for each of a plurality of subnets; generating a hash value of the header included in the most recently added block; generating a new block header, the new block header including the generated hash value, a timestamp, and a sequence of pairs including a pair for each of the plurality of subnets, each pair including a subnet identifier associated with the respective subnet and a merkle root of each of the transaction data entries received for the respective subnet; generating a new block, the new block including the generated new block header and the transaction data entries for each of the plurality of subnets; and transmitting the new block to a plurality of nodes associated with the partitioned blockchain.
    Type: Application
    Filed: November 5, 2019
    Publication date: March 5, 2020
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10505717
    Abstract: A method for generation of blocks for a partitioned blockchain includes: storing blocks comprising a partitioned blockchain, wherein each block includes a header and transaction entries; receiving transaction data entries for each of a plurality of subnets; generating a hash value of the header included in the most recently added block; generating a new block header, the new block header including the generated hash value, a timestamp, and a sequence of pairs including a pair for each of the plurality of subnets, each pair including a subnet identifier associated with the respective subnet and a merkle root of each of the transaction data entries received for the respective subnet; generating a new block, the new block including the generated new block header and the transaction data entries for each of the plurality of subnets; and transmitting the new block to a plurality of nodes associated with the partitioned blockchain.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: December 10, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10454765
    Abstract: A method for automatic configuration of a communication network includes: generating a request message, the request message including a communication address associated; transmitting the generated request message as a broadcast message to a plurality of computing devices using a predefined user datagram protocol (UDP) port, the message being broadcast with a predetermined time to live; receiving agreement messages from computing devices transmitted by the respective computing device using the predefined UDP port, each agreement message including a communication address associated with the respective computing device and a specified transmission control protocol (TCP) port; identifying at least one of the one or more agreement messages for establishment of communication; and establishing a communication connection to the computing device associated with each identified agreement message using the specific TCP port.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 22, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10396988
    Abstract: A method for distributing multiple cryptographic keys used to access data includes: receiving a data signal superimposed with an access key request, wherein the access key request includes at least a number, n, greater than 1, of requested keys; generating n key pairs using a key pair generation algorithm, wherein each key pair includes a private key and a public key; deriving an access private key by applying the private key included in each of the n key pairs to a key derivation algorithm; generating an access public key corresponding to the derived access private key using the key pair generation algorithm; and electronically transmitting a data signal superimposed with a private key included in one of the n key pairs for each of the n key pairs.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 27, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20190245698
    Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.
    Type: Application
    Filed: April 16, 2019
    Publication date: August 8, 2019
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventors: Simon R. Dix, Steven Charles Davis
  • Publication number: 20190213821
    Abstract: A method for processing votes in a public blockchain includes: generating an election reference and candidate references; generating an asymmetric cryptographic key pair comprised of a master private key and master public key; generating a registration block for addition to a blockchain including the election reference, candidate references, and master public key; transmitting the registration block to nodes associated with the blockchain; receiving a plurality of voting messages, each including a vote and the election reference, where the vote includes a voter reference and at least one candidate reference; generating one or more voting blocks for addition to the blockchain including the received votes; and transmitting each generated voting block to nodes associated with the blockchain.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 11, 2019
    Applicant: Mastercard International Incorporated
    Inventor: Steven Charles DAVIS
  • Patent number: 10305694
    Abstract: A method for propagating configuration data using a blockchain includes: storing a blockchain comprised of a plurality of blocks, each being comprised of a block header having a timestamp and one or more configuration transactions; receiving one or more configuration data items; generating a new configuration transaction for each configuration data item; hashing a most recent block identified based on the timestamp included in the respective block header to generate a previous block hash value; hashing a combination of the new configuration transactions and/or data associated therewith to generate a current block hash value; generating a new block header, the new block header including a current timestamp, the previous block hash value, the current block hash value, and a digital signature; generating a new block comprised of the new block header and each new configuration transaction; and updating the blockchain by appending the new block.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: May 28, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventors: Simon R. Dix, Steven Charles Davis
  • Publication number: 20190139043
    Abstract: A method for addition of a block to a permissioned blockchain using efficient consensus includes: storing a blockchain; receiving transaction messages having transaction values from consensus nodes; generating a Merkle root for the transactions messages using transaction references; generating a proposed block header having the Merkle root and a hash of the header of the most recently added block in the blockchain; hashing the proposed block header; transmitting a proposal message having a digital signature and the hashed proposed block header to auditing nodes; receiving a response message accepting the digital signature from a majority of auditing nodes; transmitting an accept message to the auditing nodes; transmitting a confirmation message to the consensus nodes including the hashed proposed block header and digital signature; and writing a new block to the blockchain having the transaction values from the transaction messages and a header including the proposed block header and digital signature.
    Type: Application
    Filed: January 3, 2019
    Publication date: May 9, 2019
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20190138401
    Abstract: A method for recovery of missing or extra data using a bloom filter includes: storing a plurality of transaction messages, each including a transaction value; generating a bloom filter of the transaction messages, the bloom filter being generated using a number of hash rounds and with a size at least double the number of transaction messages; generating a recover message including the number of transaction messages, the number of hash rounds, the size, and the generated bloom filter; transmitting the recover message to a consensus node; receiving a response message from the consensus node, the response message including at least one additional transaction message; and inserting the at least one additional transaction message into the plurality of transaction messages.
    Type: Application
    Filed: January 7, 2019
    Publication date: May 9, 2019
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10204341
    Abstract: A method for addition of a block to a permissioned blockchain using efficient consensus includes: generating a Merkle root for received transaction messages and hashing the header of the most recent block in a blockchain; hashing a new header consisting of the Merkle root and prior block hash; sending the new header to auditing nodes; receiving approval of the new header from a majority of auditing nodes; informing the auditing nodes of the approval of the new header; and providing the new header and a digital signature to each consensus node for writing of a new block to the blockchain that includes the new header and the received transaction messages.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: February 12, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10198325
    Abstract: A method for recovery of missing or extra data using a bloom filter includes: storing a plurality of transaction messages, each including a transaction value; generating a bloom filter of the transaction messages, the bloom filter being generated using a number of hash rounds and with a size at least double the number of transaction messages; generating a recover message including the number of transaction messages, the number of hash rounds, the size, and the generated bloom filter; transmitting the recover message to a consensus node; receiving a response message from the consensus node, the response message including at least one additional transaction message; and inserting the at least one additional transaction message into the plurality of transaction messages.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: February 5, 2019
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20190034926
    Abstract: A method for processing of a cryptographically auditable transaction includes: receiving payment data, wherein the payment data includes at least a primary account number; transmitting the primary account number to a computing system; receiving a confirmation associated with the primary account number from the computing system; transmitting a payment request to the computing system, wherein the payment request includes at least a reference value associated with a payment transaction; receiving an acceptance request from the computing system, wherein the acceptance request includes at least the reference value, an acceptance address, one or more fee values, and a first digital signature generated by a third party; generating a second digital signature using at least the acceptance address; and transmitting at least the second digital signature to the computing system.
    Type: Application
    Filed: July 25, 2017
    Publication date: January 31, 2019
    Applicant: Mastercard International Incorporated
    Inventor: Steven Charles DAVIS
  • Publication number: 20190028275
    Abstract: A method for distributing multiple cryptographic keys used to access data includes: receiving a data signal superimposed with an access key request, wherein the access key request includes at least a number, n, greater than 1, of requested keys; generating n key pairs using a key pair generation algorithm, wherein each key pair includes a private key and a public key; deriving an access private key by applying the private key included in each of the n key pairs to a key derivation algorithm; generating an access public key corresponding to the derived access private key using the key pair generation algorithm; and electronically transmitting a data signal superimposed with a private key included in one of the n key pairs for each of the n key pairs.
    Type: Application
    Filed: September 11, 2018
    Publication date: January 24, 2019
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20190007199
    Abstract: A method for generation of blocks for a partitioned blockchain includes: storing blocks comprising a partitioned blockchain, wherein each block includes a header and transaction entries; receiving transaction data entries for each of a plurality of subnets; generating a hash value of the header included in the most recently added block; generating a new block header, the new block header including the generated hash value, a timestamp, and a sequence of pairs including a pair for each of the plurality of subnets, each pair including a subnet identifier associated with the respective subnet and a merkle root of each of the transaction data entries received for the respective subnet; generating a new block, the new block including the generated new block header and the transaction data entries for each of the plurality of subnets; and transmitting the new block to a plurality of nodes associated with the partitioned blockchain.
    Type: Application
    Filed: September 6, 2018
    Publication date: January 3, 2019
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Publication number: 20180308092
    Abstract: A method for managing fractional reserves of blockchain currency includes: storing, in a first central account, a fiat amount associated with a fiat currency; storing, in a second central account, a blockchain amount associated with a blockchain currency; storing a plurality of account profiles, each profile including a fiat currency amount, blockchain currency amount, account identifier, and address; receiving a transaction message associated with a payment transaction, the message being formatted based on one or more standards and including a plurality of data elements, including a data element reserved for private use including a specific address and a transaction amount; identifying a specific account profile that includes the specific address included in the data element in the received transaction message; and updating the blockchain currency amount included in the identified specific account profile based on the transaction amount included in the data element in the received transaction message.
    Type: Application
    Filed: June 29, 2018
    Publication date: October 25, 2018
    Applicant: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10103885
    Abstract: A method for distributing multiple cryptographic keys used to access data includes: receiving a data signal superimposed with an access key request, wherein the access key request includes at least a number, n, greater than 1, of requested keys; generating n key pairs using a key pair generation algorithm, wherein each key pair includes a private key and a public key; deriving an access private key by applying the private key included in each of the n key pairs to a key derivation algorithm; generating an access public key corresponding to the derived access private key using the key pair generation algorithm; and electronically transmitting a data signal superimposed with a private key included in one of the n key pairs for each of the n key pairs.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: October 16, 2018
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10097344
    Abstract: A method for generation of blocks for a partitioned blockchain includes: storing blocks comprising a partitioned blockchain, wherein each block includes a header and transaction entries; receiving transaction data entries for each of a plurality of subnets; generating a hash value of the header included in the most recently added block; generating a new block header, the new block header including the generated hash value, a timestamp, and a sequence of pairs including a pair for each of the plurality of subnets, each pair including a subnet identifier associated with the respective subnet and a merkle root of each of the transaction data entries received for the respective subnet; generating a new block, the new block including the generated new block header and the transaction data entries for each of the plurality of subnets; and transmitting the new block to a plurality of nodes associated with the partitioned blockchain.
    Type: Grant
    Filed: July 15, 2016
    Date of Patent: October 9, 2018
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis
  • Patent number: 10026082
    Abstract: A method for managing fractional reserves of blockchain currency includes: storing, in a first central account, a fiat amount associated with a fiat currency; storing, in a second central account, a blockchain amount associated with a blockchain currency; storing a plurality of account profiles, each profile including a fiat currency amount, blockchain currency amount, account identifier, and address; receiving a transaction message associated with a payment transaction, the message being formatted based on one or more standards and including a plurality of data elements, including a data element reserved for private use including a specific address and a transaction amount; identifying a specific account profile that includes the specific address included in the data element in the received transaction message; and updating the blockchain currency amount included in the identified specific account profile based on the transaction amount included in the data element in the received transaction message.
    Type: Grant
    Filed: May 21, 2015
    Date of Patent: July 17, 2018
    Assignee: MASTERCARD INTERNATIONAL INCORPORATED
    Inventor: Steven Charles Davis