A summary of the authentic Islamic traditions that testify to the fact that the Qur'an has been altered. Including verses that were changed aswell as verses that were lost or omitted.
Sahih Al-Bukhari Volume 5, Book 57, Number 85
Sahih Al-Bukhari Volume 5, Book 57, Number 105
Sahih Al-Bukhari Volume 6, Book 60, Number 468
Sahih Al-Bukhari Volume 6, Book 61, Number 512
Sahih Al-Bukhari Volume 8, Book 82, Number 816
Sahih Al-Bukhari Volume 8, Book 82, Number 817
Sahih Al-Bukhari Volume 9, Book 92, Number 424
Sahih Muslim Book 005, Number 2286
Sahih Muslim Book 008, Number 3421
Sahih Muslim Book 008, Number 3422
I'm sure that there are more, but the witness of 10 would be enough in a court of law.