The kansha shrines are the shrines which receive heihaku (Shinto offering such as cloth, paper, and rope) from Jingikan at the Kinen-sai festival (a prayer service for a good crop) held in February of each year, and hafuribe (local priests) from each shrine gathered at Jingikan to receive heihaku.
官社とは、毎年2月の祈年祭に神祇官から幣帛を受ける神社のことであり、各神社の祝部が神祇官に集まって幣帛を受け取っていた。