That "Truth doesn't include things that have not verified yet." is rather problematic. Was "the Earth revolves around the Sun" not true in the 12th century, or in ancient Egypt? I'd say it was. People just didn't know it.

If someone who lives in ancient times claims the earth revolves around the earth, they will be sent to insanity detention. Those days sun rises from the east and sets in the west is truth even now in our daily life from our empirical observation, it is truth and we don't say the earth is about to face the sun when we are just before sunrise. The fact is only from our recent scientific development in astronomy we understand the earth revolves around the earth, but this 'truth' doesn't tell a lot about many things in our ordinary life.

'Truth' only tells relative plausibility. You see for those who sees the earth from the space, the earth revolves around the earth is truth, but for those who stay on the earth, the sun revolves the earth is nothing but the truth. It is more important to define where we are.

Is the conviction of the majority a criterion of truth?

Unfortunately 'truth' does have only such a value. Yes, nine out of ten say yes, it's true, we must admit it's truth. There's no absolute truth.

How do we know whether a proposition is not verified yet or whether it in principle cannot be verified? I'd say we don't know.

Granted that we don't know, so do you think can truth include a proposition which is not verified and in principle cannot be verified?