One was Kaihaifukigin, private operation based on purchase of cupellated silver from silver mines located in private properties and of silver available in the marketplace to forge Chogin silver for income from part of the revenues.
一つは諸国の私領銀山より産出される灰吹銀および世上流通の灰吹銀を買い上げ、丁銀に吹き立て利益の一部を運上する、買灰吹銀（かいはいふきぎん）（寄銀）による自家営業形式。