cksum= 1764812369 1735557819 reference01.2020.1.ckp.gz
MD5(reference01.2020.1.ckp.gz)= a790018050e34f14ce643c0bb9841d7b
SHA1(reference01.2020.1.ckp.gz)= d81503a1a7826a400218daeb5749f9e793089019