The FBI also concurred with the DNI’s claim that the IC has no intelligence to suggest the laptop is Russian disinformation, by saying “we have nothing to add.” Additionally, a senate committee has determined and announced that they believe the evidence Bobulinski presented is authentic.

"We have nothing to add" is not "concurring". You're making a leap of logic there. It's the same thing as saying "we can neither confirm nor deny".

The "Senate Committee" you speak of is chaired by Ron Johnson, who is a staunch Trump ally and again, a rank partisan.

In order for the general public to have any degree of trust about this, there is going to have to be some authority who is at least not a partisan who can speak with authority to actual facts. Not vague "assurances" with no evidence. This issue is way too political to trust Republicans, especially after Benghazi (went nowhere after dozens of investigations by partisans) and Hillary's e-mails (went nowhere after a whole year of hyping it up as the worst crime ever by a politician). This entire thing just smells like the next big Republican freakout over nothing.

Could you give an example of an authority you would trust to verify the authenticity of the evidence?

Edit: Update! Robert Graham (of Errata Security) has verified the DKIM headers of the “smoking gun” email — https://twitter.com/erratarob/status/1322007153415200768