I doubt there is a single "independently verifyable objective truth that everyone agrees on".

There are always some crazy people who will disagee with even the most obvious truths out there. And throughout history there were many cases where both the majority and the experts have been proven wrong.

So instead we should focus on verifyabiliy and objectivity.

Nothing in life is verifyable to the same degree for everyone. If I don't run my own node I can't verify if I actually own any Bitcoin. If I run my own node I still trust in the source code to be honest with me. If I learn to read the code I still have to trust that my computer is actually running that code and not malicious softare inserted by an attacker. So ultimately verifyabiliy breaks down to something being highly probable and it is often impossible or highly impractical to fully verify something as truth.

I guess the best approach is to verify as much as reasonable and to be open for new evidence to present itself. And that is exactly what the early christians did. They heard about some guy who was crucified and came back to life. So they verified as much as possible, they spoke to eyewitnesses, checked the existing scriptures and came to the conclusion that god raised him from the dead. The greek word "pistis" which is often translated as "faith" was originaly understood as "being persuaded/convinced by argument".

So contrary to your claim christianity is actually based on verification instead of bindly following an idea no one can agree on.