Fun fact: a service like this is illegal in the USA without a money transmitter license (which costs around $1mm per state) in each state in which you send or receive money. There are additional regulatory requirements demanding that you collect the identity of each person you send to or receive from.

Liberty Reserve learned this the hard way: https://en.wikipedia.org/wiki/Liberty_Reserve

This is one of the reasons cryptocurrencies are so successful: they are money transmission systems without an operator to prosecute. Money transmission is extremely useful.

It sure would be nice to be able to start and run businesses like this without a ball and chain around one's neck.