Abstract: A method of performing a transaction between a merchant and a customer is described. The method involves a customer computing device (11), a merchant computing device (12) and a payment facilitator computing system (19). Firstly, there is agreement upon a transaction between the customer computing device (11) and the merchant computing device (12), wherein a first one of said computing devices produces a code image representing elements of the transaction.

Abstract: A method for ensuring regulatory oversight of transaction activity and storage thereof on a blockchain includes: establishing a secure communication channel between a first computing system associated with a first entity and a second computing system associated with a second entity; receiving transaction data from the first computing system, wherein the transaction data includes a first digital certificate from the first computing system and second digital certificate from the second computing system; identifying a regulatory node that has regulatory oversight of the first entity or the second entity; transmitting at least a portion of the transaction data to the regulatory node; receiving a third digital certificate from the regulatory node; and posting a transaction hash including the first digital certificate, second digital certificate, and third digital certificate to a blockchain.

Abstract: A method of performing a transaction between a merchant and a customer is described. The method involves a customer computing device (11), a merchant computing device (12) and a payment facilitator computing system (19). Firstly, there is agreement upon a transaction between the customer computing device (11) and the merchant computing device (12), wherein a first one of said computing devices produces a code image representing elements of the transaction.

Abstract: There is described herein a method of conducting a mobile transaction, comprising: a card processor server receiving an authorisation message from an application programming interface (API) running on a sending institution server, the authorisation message comprising a push code indicating that the transaction should be processed immediately; and the card processor server transmitting a guarantee message to an API running on a receiving institution server, the guarantee message comprising an urgency code indicating that funds should be posted to a merchant's account immediately. There is further described a system comprising a card processor server, an API running on a sending institution server, an API running on a receiving institution server, a consumer mobile user device and a merchant user device, the card processor server being configured to perform the aforementioned method.