"On Tuesday morning at approximately 3:00 am, a sniper’s bullet struck a panoramic casement window on the east wall of Trump’s bedroom at his Mar-a-Lago estate. The round might have slain Trump had he not recently replaced tempered glass with Blast Structures International’s bullet resistant glass, which, according to the company’s website, can stop anything less powerful than a .50 round."
https://realrawnews.com/2021/01/trump-assasination-foiled-deep-state-in-panic-mode/

Has ths been verified by other sources?

Probably not, but neither most of his 50+ assasination attempts.
These types of news hardly ever see the light of any type of media.