Ind. Code § 32-21-2-5

Sec. 5. To record in Indiana a conveyance that is acknowledged outside Indiana but within the United States, the conveyance must be:

(1) certified by the clerk of any court of record of the county in which the officer receiving the acknowledgment resides; and

(2) attested by the seal of that court.

However, an acknowledgment before an officer having an official seal that is attested by the officer's official seal is sufficient without a certificate.