I hear this a lot, Carlo. It all depends on what someone considers “hard evidence”. As extent writings go, paleography is not always an exact science in terms of a work’s so-called “legitimacy”.
I’m a big fan of Dr. Bart Ehrman’s work on New Testament studies. While there is a boatload of paleographical pseudo evidence attesting to the life and work of the Church’s “Iesus”, there is also substantial evidence of someone named “Yeshuah” from a prominent family close to the temple that gets hidden from us.
Check it out … The Jesus Dynasty by Dr. James Tabor. Tabor was a student of Dr. Robert Eisenman who wrote the definitive work on James, the brother of Jesus. Neither of these men would be particularly loved by the orthodox Church.
Cheers!