Mormon Doctrine, pg. 327; “Moroni deposited the plates in the Hill Cumorah in about 421 A.D., and then as a resurrected being revealed the hiding place to the Prophet on September 22, 1823. Four years later the Prophet was permitted to obtain possession of them, but the actual translation of the portion we now have as the Book of Mormon did not take place until between April 7 and June 11, 1829. Thereafter the plates were returned to the custody of Moroni. (Jos. Smith 2:27-65; D. & C. 27:5; Doctrines of Salvation, vol. 3, pp. 215-226.”
Deuteronomy 18:10-12; “There shall not be found among you any one that maketh his son or his daughter to pass through the fire, or that useth divination, or an observer of times, or an enchanter, or a witch, 11 Or a charmer, or a consulter with familiar spirits, or a wizard, or a necromancer. 12 For all that do these things are an abomination unto the LORD: and because of these abominations the LORD thy God doth drive them out from before thee.”
How convenient there is no evidence. With the Bible we have ample evidence to prove the writings are authentic.