kān​hé

to verify a tally

勘合 kān​hé
to verify a tally
To compare and verify two halves of a seal, tally, or contract to confirm authenticity; used historically for troop movements, official travel, or entry into the capital city.
tally
(bound form) A tally, coupon, or credential issued by the government, typically split in two, used for official verification of identity or authority.