Payments sent to a payment code are not distinguishable from traditional bitcoin transactions; payment codes leak an upper bound on the number of incoming notification transactions a known payment code has received. the senders of those payment codes, whether not a particular notification transaction is a valid payment code or not is not leaked.. For bitcoin and other cryptocurrencies to go mainstream, there must be an alternative that eases this ritual to a decent level. reusable payment codes provide one of a few key pieces to this new. A refund can be sent to the payment code without crazy work-arounds that typify the current bitcoin landscape. reusable payment codes are essentially a way to identify yourself without leaking any information about how much was received by or sent to that payment code. addresses, deterministic wallets and hd wallets all do not have this ability..
