Edwards is seeking to bounce again and win the match having twice come up brief in title fights towards Johnny Eblen in 2023 and 2024.
He returned to type, knocking out Impa Kasanganay within the second spherical in April, and introduced that confidence into the competition with Silveira.
The pair traded leg kicks within the early levels, with Silveira sweeping Edwards off his toes.
Edwards responded, taking management of the stand-up, defending takedown makes an attempt and hurting Silveira with a knee to the physique.
Roared on by his brother and former UFC welterweight champion Leon at cage-side, Edwards damage Silveira with a straight left and secured two takedowns of his personal.
Because the combat entered the closing levels with Edwards controlling Silveira on the bottom, he gave a thumbs-up to the tv cameras, signalling his confidence in victory.