Here it is like installing an armored door, the lock of which is built in and cannot be replaced. My data will be recorded by the buyer, there's no point in me stealing
Your data could be fake and even if it wasn't - it's not a guarantee of anything.
the absence of transactions on the address proves that there was no sale before, no one knows the key except me
This doesn't prove any such thing. Any number of people could know the key, and even 1 other person is 1 too many. Not your key, not your coins. Stop scamming.
