You might see a $1 or 1€ pending charge on your bank statement as part of the card authorization process. This is a temporary authorization charge and it will disappear from their statement.
Stripe sends a request to the issuing bank for either a $0 or $1 or 1€ authorization to verify that the card is valid and the bank will allow it to be authorized.
Regardless of whether or not the authorization is declined, Stripe will reverse the authorization request immediately, but it may take some business days for the pending authorization to disappear from your bank statement.