System and method for distributing data records using a blockchain

A computer-implemented method to transfer a total data record represented by a total value between an input node and an output node using a blockchain, the method comprising:

• obtaining, at the input node, public key material associated with the output node, wherein the public key material comprises first and second public keys;
• determining, based on the total data record and available data records controlled by the input node, one or more inputs selected from the available data records, wherein a cumulative total of the one or more inputs is equal to or greater than the total data record, pooling inputs from a variety of sources;
• determining a number and denomination of a plurality of outputs that will compose a payment to the output node;
• dividing and allocating the one or more inputs to the outputs, thereby mixing transactions,
• and
• each output in the plurality of outputs being for a respective data record characteristic selected from a series of prescribed data record characteristics, and wherein a sum of the plurality of outputs matches the total data record;
• for each of the outputs:
• selecting a number at random;
• generating an output address based on the first and second public keys and the number selected at random;
• inserting the output address in a record distribution transaction to be allocated a data record having a respective data record characteristic of that output;
• generating a nonce public key from the number selected at random;
• and
• sharing the nonce public key with the output node;
• and
• signing the one or more inputs.