If something is statedly true, it is said to be true by someone in a clear way.
Statedly is a formal word that means something is said to be true in a clear and official way.
Examples:
She statedly said that the sky is blue.
The teacher statedly told us to be quiet.
He statedly declared his love for ice cream.
The cat statedly meowed for food.
The sun statedly rises in the east every day.
The sign statedly said 'No Entry'.