Methods and systems of creating a payment record with a cryptographically secure audit trail

A system of creating a secure audit trail for transactions, the system comprising,

• an electronic device;
• and
• a non-transitory computer-readable storage medium in communication with the electronic device, wherein the non-transitory computer-readable storage medium comprises one or more programming instructions that, when executed, cause the electronic device to:
• for each of a plurality of transactions:
• receive, from a client electronic device, a transaction details document that summarizes the transaction, wherein the transaction represents a completed purchase or a potential purchase by a user,
• generate a document hash for the transaction by performing a first cryptographic hash function on the received transaction details document, and
• identify metadata associated with the transaction,
• generate an entry hash associated with the plurality of transactions by performing a second cryptographic hash function on at least the document hash of each transaction in
• the plurality of transactions and the metadata associated with each transaction in the plurality of transactions, and
• store the entry hash in an entry in a transaction log database.