Translations: Tutorial on transaction vouchers/4/en
Rule number one on the blockchain: the blockchain is immutable. This means transactions are irreversible. If you make a mistake entering a recipient address, or if you enter too many zeros at the end of the amount you are sending, you can send your funds into oblivion or bankrupt yourself with no recourse. This is clearly not a sustainable design for businesses to operate with thousands of users on the blockchain. The risks are simply too high for losing user funds.