It is probably your change address.
Since Bitcoin UTXOs are spent completely, the remainder after the recipient amount is assumed to be used as fees. As a result, the wallet has to send the funds or the change to the new address within your wallet. As long as the amount from your transaction is -(0.001 + fees) then you are fine. The change addresses are not shown in Core (IIRC) to avoid confusing the users.
Since Bitcoin UTXOs are spent completely, the remainder after the recipient amount is assumed to be used as fees. As a result, the wallet has to send the funds or the change to the new address within your wallet. As long as the amount from your transaction is -(0.001 + fees) then you are fine. The change addresses are not shown in Core (IIRC) to avoid confusing the users.
Thanks a lot!
I tried to find this address in my Bitcoin core both sending and receiving address but failed. Is it normal? Should I stop worrying and just continue using my Bitcoin core wallet?