Under the control of the Edo bakufu, a court noble of the dainagon (Major Counselor) class, who was an academically superior and eloquent speaker, was appointed to the job and requested by the Kyoto shoshidai (the Kyoto deputy) to present a paper sealed in blood.
江戸幕府の元では学問に優れて弁舌が巧みな大納言級の公卿が任じられ、就任の際には京都所司代より血判提出を求められた。