5. The computer system of claim 4 , wherein the processing system is further configured to: in response to reception of the rejection command, generate and submit a cancel blockchain transaction to the blockchain, wherein the cancel blockchain transaction is to a blockchain address that is not associated with any of the plurality of intended recipients.
5. The computer system of claim 4 , wherein the processing system is further configured to: in response to reception of the rejection command, generate and submit a cancel blockchain transaction to the blockchain, wherein the cancel blockchain transaction is to a blockchain address that is not associated with any of the plurality of intended recipients. 6. The computer system of claim 5 , wherein the blockchain address is an address associated with an editor user.