proof of work
it is my unit ( comrade) ( id number _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ ) in _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ department engaged in _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ work has been _ _ _ _ _ _ _ _ _ _ _ years hereby certify that
name of institution _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
day period _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
( seal)
proof of work
xxx in XX years x months x month in my work unit hereby certify that
xxx computer city
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