A method for processing of a cryptographically auditable transaction, comprising: receiving, by an input device of a processing server, payment data, wherein the payment data includes at least a primary account number; transmitting, by a transmitting device of the processing server and to a moderating computing device, the primary account number; receiving, by a receiving device of the processing server and from the moderating computing device, an identification of a computing system that was identified by the moderating computing device based on the primary account number, and communication data for establishing a communication channel with the computing system; establishing, by the processing server, the communication channel with the computing system based on the communication data; electronically transmitting, by the transmitting device of the processing server via the communication channel, the primary account number to the computing system identified by the moderator computing device; receiving, by the receiving device of the processing server, a confirmation associated with the primary account number from the computing system; electronically transmitting, by the transmitting device of the processing server, a payment request to the computing system, wherein the payment request includes at least a reference value associated with a payment transaction, wherein the reference value is a hash of a combination of the primary account number and a payment amount associated with the payment transaction; receiving, by the receiving device of the processing server, an acceptance request from the computing system, wherein the acceptance request includes at least the reference value, an acceptance address, one or more fee values, and a first digital signature generated by the moderating computing device; generating, by a signing module of the processing server, a second digital signature using at least the acceptance address; and electronically transmitting, by the transmitting device of the processing server, at least the second digital signature to the computing system. receiving, by an input device of a processing server, payment data, wherein the payment data includes at least a primary account number; transmitting, by a transmitting device of the processing server and to a moderating computing device, the primary account number; receiving, by a receiving device of the processing server and from the moderating computing device, an identification of a computing system that was identified by the moderating computing device based on the primary account number, and communication data for establishing a communication channel with the computing system; establishing, by the processing server, the communication channel with the computing system based on the communication data; electronically transmitting, by the transmitting device of the processing server via the communication channel, the primary account number to the computing system identified by the moderator computing device; receiving, by the receiving device of the processing server, a confirmation associated with the primary account number from the computing system; electronically transmitting, by the transmitting device of the processing server, a payment request to the computing system, wherein the payment request includes at least a reference value associated with a payment transaction, wherein the reference value is a hash of a combination of the primary account number and a payment amount associated with the payment transaction; receiving, by the receiving device of the processing server, an acceptance request from the computing system, wherein the acceptance request includes at least the reference value, an acceptance address, one or more fee values, and a first digital signature generated by the moderating computing device; generating, by a signing module of the processing server, a second digital signature using at least the acceptance address; and electronically transmitting, by the transmitting device of the processing server, at least the second digital signature to the computing system.