Kaithi is a Unicode block containing characters historically used for writing Bhojpuri, Bajjika, Magahi, Awadhi, Maithili, Urdu, Hindi, and other related languages of the Bihar/Uttar Pradesh area of northern India.
Moore, Lisa (2008-11-05), "Consensus 115-C18", UTC #115 Minutes, Rescind approval of 10 characters for Kaithi digits, at U+110C0..U+110C9. They will be unified with Devanagari.
Anderson, Deborah; Whistler, Ken; Pournader, Roozbeh; Moore, Lisa; Constable, Peter; Liang, Hai (2020-07-21), "12. Kaithi", Recommendations to UTC #164 July 2020 on Script Proposals