How can it be proven that the Qur’an was transmitted to us through uninterrupted [mass] narration (mutawatir) without any alteration, and how can the claim of adding information or scientific facts to the Qur’an after their discovery be refuted?

The Qur’an's authenticity as the Qur’an is established only through widely-transmitted, definitive, and unbroken chains of narration (tawatur), in terms of its wording, writing, and recitation method, passed down from generation to generation until the era of prophethood. It was written down during the time of the Prophet, peace be upon him, and compiled into a single mushaf during the caliphates of Abu Bakr and Uthman, and Muslims have transmitted it through recitation and writing. There exist ancient manuscripts of the mushaf dating back to the first Hijri centuries, and there is no variation among them, neither in addition nor omission. This indicates that any claim to the contrary is either utter ignorance or malice, and holds no scientific value, for even the greatest enemies of Islam have never made such a claim.