nodes<\/a> rendering the distributed ledger immutable. Since no one can modify blockchain transactions, there is no case of \"double spending,\" a situation where a person might use the same funds to make several transactions.<\/p>\n\n\n\nMany can reduce their errors by simply copying and pasting addresses or scanning a QR code. Yet these simple strategies are not fully effective. It is especially true when a sender mistakenly sends the wrong price. There is a lot of room for human error in a technical system.<\/p>\n\n\n\n
How Can Transactions Be Reversed?<\/h2>\n\n\n\n
Protocols such as T3rn<\/a> aim to make transactions reversible by using specific<\/a> fail-safe mechanisms. With a five-step fail mechanism, Tern will cancel the transaction and revert the funds to such a user if a user fails one out of the steps through their smart contracts<\/a>.<\/p>\n\n\n\n