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US 11,900,380 B2Granted
Blockchain architecture with record security
AssigneeVisa International Service Association
InventorsAndrew Sierra, Chackan Lai
Life of this patent
Estimating the term…
Abstract
Described herein is a system in which an electronic record is stored within a distributed environment. In this system, a validation node may receive a transaction record from an acceptance node. The validation node may verify that the acceptance node is authorized 5 to participate in a blockchain network, identify a user associated with the transaction record, and append the transaction record to an electronic record. The transaction record may be associated with a digital signature formed by hashing multiple data elements, and then encrypting the hashed data elements using a private encryption key.
Claims19
A method comprising:
- receiving, by a validation node from an acceptance node, a transaction record for a transaction conducted between the acceptance node and a user, the transaction record including at least information related to the user and transaction details;
- identifying, based on the information related to the user, a blockchain associated with the transaction conducted between the acceptance node and the user;
- appending the transaction record to the blockchain;
- generating a signature by:
- generating a first hash of at least a portion of the information related to the user;
- generating a second hash of at least a portion of the transaction details;
- combining the first hash and the second hash into a text string,
- wherein combining the first hash and the second hash comprises concatenating the first hash and the second hash;
- hashing the text string to form a third hash, the third hash being a derivative of the text string;
- and
- signing the derivative of the text string, using a private key associated with the validation node to form the signature;
- attaching the signature to the transaction record that is appended to the blockchain to update the blockchain, wherein the blockchain is a ledger storing information regarding transactions conducted between one or more acceptance nodes and the user;
- and
- sending, to the one or more acceptance nodes that are associated with one or more resource providers computers, the updated blockchain;
- verifying, by the one or more resource providers computers, verify the a second transaction with the user based on the information stored in the updated blockchain;
- determining, by the one or more resource provider computers, determine a level of risk associated with the second transaction;
- and
- determining, by the one or more resource provider computers, detcrminc whether to conduct the second transaction based on the determined level of risk.
15 more elements
A system comprising:
- a validation node server comprising:
- one or more processors;
- and
- a memory including instructions that, when executed by the one or more processors, cause the validation node server to:
- receive, from an acceptance node server, a transaction information for a transaction conducted between the acceptance node server and a user, the transaction information including at least user information and transaction details;
- identify, based on the user information, a blockchain associated with the transaction;
- generate a transaction record based at least in part on the transaction information;
- append the transaction record to the blockchain;
- generate a signature by:
- generating a first hash of at least a portion of the user information;
- generating a second hash of at least a portion of the transaction details;
- combining the first hash and the second hash into a text string,
- wherein combining the first hash and the second hash comprises concatenating the first hash and the second hash;
- hashing the text string to form a third hash, the third hash being a derivative of the text string;
- and
- signing the derivative of the text string, using a private key associated with the validation node server to form the signature;
- and
- attach the signature to the transaction record that is appended the blockchain to update the blockchain,
- wherein the blockchain is a ledger storing information regarding transactions conducted between one or more acceptance nodes and the user;
- and
- send to the one or more acceptance nodes that are associated with one or more resource providers computers, the updated blockchain;
- and
- the one or more resource provider computers each comprising a processor and a memory including instructions that, when executed by the processor, cause the one or more resource provider computers to:
- verify a second transaction with the user based on the information stored in the updated blockchain;
- determine a level of risk associated with the second transaction;
- and
- determine whether to conduct the second transaction based on the determined level of risk.
24 more elements
Dependencies are inferred from the claim text.