I know some countries that emit a "certificate of no judicial history", even when the citizen has so, if they ended the jail time

I think this is wrong, it should be reported entirely at least for 5 years after the fact happened

The jail time is the entire punishment. To allow punishment to continue afterward is to invite recidivism.

	▲	Muromec an hour ago \| parent [-]
		Jail time is not always the entire punishment, especially on the enlightened continent, where jail time is used sparingly. Keeping the conviction on record is a thing, because consecutive convictions often carry come with higher punishment. So depending on a crime cathegory, there is X years after which the record no longer counts, but it's not 0.