Relating to that, many ancient coins, known as Fuhonsen, were found in the Asukaike Ruins near Asuka-dera Temple and their origins (including a connection with Asuka-dera Temple) are hotly debated.
これに関連して飛鳥寺近くの飛鳥池遺跡からは大量の富本銭が発見され、その位置づけを巡って（飛鳥寺との関係も含めて）様々な議論が行われている。