The facts according to the life of your prophet were he met a Nestorian monk who predicted he would be great yes?, he married a catholic woman yes?, to say he had no contact with outsiders would be wrong, as a merchant the world would come to him, no airfrieght all goods came in on baggage trains and out as such on beasts of burden like camels etc, ample opportunity to mix with outsiders, out of interest what were his other occupations?
Uthman died in 655 yes but if you do not have a copy of the quran dated before 705 you cant claim to know what was written it, the Yemen copy IS the oldest surviving copy of the Quran in the World unless you can direct me to a known surviving copy that pre-dates this?
Saying its lies without physical evidence is just words.
The oldest known document that survives today of Arabic dots is dated to 643 Ad
Arabic Alphabet - Alphabet Arabic
its mentioned half way down in the link above,
thats the oldest document we have but the dots predate the document AND Uthman,
The dots evolved, simple to start and what you know now.
so thats lie number two dealt with.
therefore the scholars verdict on the Yemen Quran still stands.
Qur'anic Language and Grammatical Mistakes
above is a link which details how meanings get lost.
best to look up the Arabic unicode for further clarity.
Unless you have an earlier copy of the Quran that we can read than the Yemen one, you can not prove what was written in it matches your modern day Qurans.
You can claim it but like I said, claims without evidence can be dismissed without evidence.