Ensuring Data Integrity of Executed Transactions

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, a set of transactions, each transaction specifying a transfer of an asset;
• record, by the central service provider, each transaction in the set of transactions by:
• write a transaction record for the transaction to a block in a blockchain;
• and
• update one or more traceable directed graphs to reflect the transfer of the asset specified by the transaction;
• receive, from the primary recordation system, transaction data for each transaction in a first set of recorded transactions 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, the first set of recorded transactions recorded by the primary recordation system using the set of transactions also received by the primary recordation system;
• identify a second set of recorded transactions represented by transaction records written in the blockchain;
• determine positions of the asset held by one or more parties;
• and
• verify each recorded transaction in the first set of recorded transactions recorded by the primary recordation system by:
• compare information derived from the transaction data to a transaction record written in a blockchain representing a corresponding recorded transaction in the second set of recorded transactions;
• and
• compare 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.

A method for verifying transaction record accuracy of a primary recordation system, comprising:

• receiving, by a primary recordation system and a central service provider, a set of transactions for recordation, each transaction in the set specifying a transfer of an asset;
• recording, by the primary recordation system, each transaction in the set of transactions by:
• updating a position table to reflect the transaction;
• and
• storing transaction data for the transaction, the transaction data comprising an identifier of the transaction and attributes of the transaction;
• recording, by the central service provider, each transaction in the set of transactions by:
• writing a transaction record for the transaction to a block in a blockchain;
• and
• updating one or more traceable directed graphs to reflect the transfer of the asset specified by the transaction;
• for each time period of a plurality of time periods:
• identifying, by the primary recordation system, a first set of recorded transactions for the time period recorded by the primary recordation system to be verified with the central service provider at an end of the time period having the end time;
• providing, by the primary recordation system to the central service provider, transaction data for each transaction in the first set of recorded transactions, the end time, and a snapshot of the position table describing positions of the asset held by one or more parties at the end time;
• identifying, by the central service provider, a second set of recorded transactions recorded by the central service provider represented by transaction records written in the blockchain corresponding to the time period;
• determining, by the central service provider, positions of the asset held by one or more parties at the end time using the one or more traceable directed graphs;
• and
• verifying, by the central service provider, each recorded transaction in the first set of recorded transactions recorded by the primary recordation system by:
• comparing information derived from the transaction data to a transaction record written in a blockchain representing a corresponding recorded transaction in the second set of recorded transactions;
• and
• comparing positions of the asset held by one or more parties at the end time described by the snapshot of the position table to positions of the asset held by one or more parties at the end time determined from the one or more traceable directed graphs.