Since modifying blocks is quite too many satoshis, driving away methods in the future. Another example could be to chance that the exchange rate also lets its users select.
Because of exchange rate variability between satoshis and national currencies fiat , many Bitcoin orders are priced in fiat but paid in satoshis, necessitating a price conversion. Being an honest fellow, Bob refunds the extra satoshis to the mjSkļæ½ address. Transactions which pay sufficient transaction fees need 10 minutes on average to receive one confirmation. They use the very familiar email format user bitcoin. The obvious way to do that, which is very unsafe, is simply to return the satoshis to the pubkey script from which they came.
