The Corpus Cyrillo-Methodianum Helsingiense (CCMH) is an electronic corpus of the most important Old Church Slavonic (OCS) texts. The texts are encoded in 7-bit ASCII in order to ensure maximum portability.
CCMH has come into being little by little as a side product of different research projects, starting in 1986. Several people have entered and checked the texts over the years, but especially Jussi Halla-aho and the late Juhani Sarsila (1940–2006) have contributed to the accuracy of the files. The contact person is Prof. Jouko Lindstedt.