I send 130 dollars someone. I check blockchain the transaction. And i see "Amount" and "Output Value" and "To" arround 170 dollars. But i only 130 dollars send. This normal? Why see 170 dollars?
In Bitcoin, there are input addresses and output addresses, and their sum is equal. When you click on the send button, the wallet searches for the highest balance in your income addresses. If the highest balance is equal to or higher than the amount required to be withdrawn, then the income will appear to you as one address, but if it is less, it will appear in several input transactions.
In the output, if there is one output and equal to the input balance, then you will see one output, otherwise the output number will be added to an address from your wallet called the change address.