I'm the owner of 17JkL94B2ngJg4QQZuiozDQjnxXB6B7yTc and 1Gu8zxRi8cyENV8CQe52D7QEsiZ7ruT73u.
Can you provide cryptographic proof of this, please?
Yes, but just after you tell me why it is necessary.
The basic crypt knowledge tells me do not sign until it is necessary, i don't know why but I obey.