校验码

校验码	jiào yàn mǎ	check digit
校	jiào	to check; to collate; to proofread
校	xiào	(bound form) school; college / (bound form) (military) field officer
校验	jiào yàn	to check / to examine
验	yàn	variant of 验
验	yàn	to examine / to test / to check
码	mǎ	weight / number / code / to pile / to stack / classifier for length or distance (yard), happenings etc