There is a small problem

[Panxhang]

Hi！In the 4th part，If someone transfers money to himself，his account balance will be double。
if out.CanBeUnlockedWith(address) {
unspentTXs = append(unspentTXs, *tx)
}
There is a “break” missing here！This statement is in the blockchain.go。
Thank you very much for your tutorial and please note this little bug~

[stoneflying]

Yes, I just found it

[mubarizkyc]

if from == to {

	log.Println("ERROR: Sender and Recipient cannot be same")
	os.Exit(1)
} you can add this in cli.send  function