Ensuring data integrity of executed transactions

Patent metadata

Field	Value
Publication number	US-10055446-B2
Application number	US-201715625948-A
Country	US
Kind code	B2
Filing date	Jun 16, 2017
Priority date	Jun 16, 2016
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A central service provider manages a blockchain network that writes the cryptographic hash of each executed transaction in a block to the blockchain network. For each executed transaction, the central service provider generates and transmits a transaction receipt such that a party can verify that the transaction was appropriately executed. Additionally, a party can check that the party's records are correct by providing transaction data describing details of transactions recorded in the party's records to the central service provider. The central service provider verifies the party's records by comparing the transaction data in the party's records to the blocks of transaction records in the blockchain network. In some scenarios, the central service provider may identify or receive an identification of a discrepancy arising from one or more transactions. The central service provider can reconcile the identified discrepancy.

First claim

What is claimed is:

1. A computer implemented method for verifying accuracy of a primary recordation system, comprising:
receiving, by a central service provider having a computer processor, transaction data describing a first set of transactions, each transaction in the first set specifying a transfer of an asset;
recording, by the central service provider, transactions in the first set of transactions by writing transaction records to blocks in a blockchain;
receiving, from the primary recordation system, transaction data describing a second set of transactions recorded by the primary recordation system and a snapshot of a position table maintained by the primary recordation system that describes positions of the asset held by one or more parties;
identifying, using the transaction data describing the second set of transactions, corresponding transaction records of the first set of transactions written to the blockchain;
determining positions of the asset held by one or more parties;
verifying the received transaction data describing the second set of transactions recorded by the primary recordation system by:
comparing the received transaction data describing the second set of transactions to the corresponding transaction records of the first set of transactions written to the blockchain; and
comparing positions of the asset held by one or more parties described by the snapshot of the position table to the determined positions of the asset held by one or more parties;

identifying, based on the verifying, an error between the received transaction data describing the second set of transactions and the corresponding transaction records of the first set of transactions written in the blockchain; and
sending a notification of the error to the primary recordation system, wherein the primary recordation system is adapted to reconcile the error.

2. The method of claim 1 , wherein transaction data describing the second set of transactions comprises:
attributes of the transactions of the second set of transactions recorded by the primary recordation system; and
unique transaction request identifiers that each identifies a transaction from the second set of transactions.

3. The method of claim 2 , wherein comparing the received transaction data to the corresponding transaction records comprises:
generating a hash value from at least the attributes and a unique transaction request identifier of the transaction data describing the second set of transactions; and
comparing the generated hash value to a hash value for a corresponding transaction record from the first set of transactions written in the blockchain.

4. The method of claim 3 , wherein identifying the error comprises:
identifying a mismatch between the generated hash value and the hash value for the corresponding transaction record written in the blockchain.

5. The method of claim 1 , wherein the primary recordation system is adapted to reconcile the identified error using one or more traceable directed graphs maintained by the central service provider.

6. The method of claim 1 , wherein comparing the received transaction data to the corresponding transaction records comprises:
comparing a unique transaction request identifier that identifies a transaction of the second set of transactions to a hash value stored in an envelope of a corresponding transaction record of a transaction of the first set of transactions written in the blockchain.

7. The method of claim 1 , wherein identifying the corresponding transaction records comprises:
identifying a time period corresponding to the second set of transactions recorded by the primary recordation system; and
identifying the corresponding transaction records written in the blockchain responsive to the identified time period.

8. A non-transitory computer-readable medium comprising computer code that, when executed by a processor, causes the processor to:
receive, by a central service provider, transaction data describing a first set of transactions, each transaction in the first set specifying a transfer of an asset;
record, by the central service provider, transactions in the first set of transactions by writing transaction records to blocks in a blockchain;
receive, from a primary recordation system, transaction data describing a second set of transactions recorded by the primary recordation system and a snapshot of a position table maintained by the primary recordation system that describes positions of the asset held by one or more parties;
identify, using the transaction data describing the second set of transactions, corresponding transaction records of the first set of transactions written to the blockchain;
determine positions of the asset held by one or more parties;
verify the received transaction data describing the second set of transactions recorded by the primary recordation system by:
comparing the received transaction data describing the second set of transactions to the corresponding transaction records of the first set of transactions written to the blockchain; and
comparing positions of the asset held by one or more parties described by the snapshot of the position table to the determined positions of the asset held by one or more parties;

identify, based on the verifying, an error between the received transaction data describing the second set of transactions and the corresponding transaction records of the first set of transactions written in the blockchain; and
send a notification of the error to the primary recordation system, wherein the primary recordation system is adapted to reconcile the error.

9. The non-transitory computer-readable medium of claim 8 ,
wherein transaction data describing the second set of transactions comprises:
attributes of the transactions of the second set of transactions recorded by the primary recordation system; and
unique transaction request identifiers that each identifies a transaction from the second set of transactions.

10. The non-transitory computer-readable medium of claim 9 , wherein the computer code that causes the processor to compare the received transaction data to the corresponding transaction records further comprises computer code that, when executed by the processor, causes the processor to:
generate a hash value from at least the attributes and a unique transaction request identifier of the transaction data describing the second set of transactions; and
compare the generated hash value to a hash value for a corresponding transaction record from the first set of transactions written in the blockchain.

11. The non-transitory computer-readable medium of claim 10 , wherein the computer code that causes the processor to identify the error further comprises computer code that, when executed by the processor, causes the processor to:
identify a mismatch between the generated hash value and the hash value for the corresponding transaction record written in the blockchain.

12. The non-transitory computer-readable medium of claim 8 , wherein the primary recordation system is adapted to reconcile the identified error using one or more traceable directed graphs maintained by the central service provider.

13. The non-transitory computer-readable medium of claim 8 , wherein the computer code that causes the processor to compare the received transaction data to the corresponding transaction records further comprises computer code that, when executed by the processor, causes the processor to:
compare a unique transaction request identifier that identifies a transaction of the second set of transactions to a hash value stored in an envelope of a corresponding tr

Assignees

• Bank Of New York Mellon

Inventors

• Pattanaik Sarthak
• Pertsovskiy Vadim

Classifications

• G06Q20/389

  Keeping log of transactions for guaranteeing non-repudiation of a transaction · CPC title

• H04L9/3297

  involving time stamps, e.g. generation of time stamps · CPC title

• H04L2209/56

  Financial cryptography, e.g. electronic payment or e-cash · CPC title

• H04L9/3239

  involving non-keyed hash functions, e.g. modification detection codes [MDCs], MD5, SHA or RIPEMD · CPC title

• G06F16/2365 Primary

  Ensuring data consistency and integrity · CPC title