There are issues to be aware of, but for small amounts it's perfectly reasonable to acknowledge a transaction without confirmations (this is known as a "zero-co

There are issues to be aware of, but for small amounts it's perfectly reasonable to acknowledge a transaction without confirmations (this is known as a "zero-confirmation" transaction). For example, our service[1] clears transactions in seconds. [1]: https://yumcoin.com https://yumcoin.com