Administrative Rules - 44.15.107 OFFICIAL STAMP
(1) The official stamp of a notary public, whether the impression is on a tangible or electronic record, shall:
(a) be rectangular in shape and approximately 1″ by 2½” in size;
(b) be in blue or black ink;
(c) have a circular seal to the left that includes the words “notarial seal,” the words “State of Montana,” and the notary public’s name as it appears on the notary public’s certificate of commission;
(d) have a block of text to the right of the seal that includes:
(i) the notary public’s printed name as it appears on the notary public’s certificate of commission;
(ii) the words “Notary Public for the State of Montana”;
(iii) the words “Residing at” immediately followed by the name of the city or town and state where the notary public lives; and
(iv) the words “My Commission Expires” immediately followed by the notary public’s commission expiration date, expressed in terms of the month (spelled out), day, and four-digit year;
(e) have a plain rectangular border enclosing the text and seal; and
(f) be in the general format illustrated below:

1-5-618. Notary public journal — retention.
(1) A notary public shall maintain one or more journals in which the notary public chronicles all notarial acts that the notary public performs. Unless the provisions of subsection (7) apply, the notary public shall retain the journal for 10 years after the performance of the last notarial act chronicled in the journal.
(2) A journal may be created on a tangible medium or in an electronic format to chronicle all notarial acts, whether those notarial acts are performed regarding tangible or electronic records. The format of a journal maintained on a tangible medium must be a permanent, bound register designed to deter fraud. A journal maintained in an electronic format must be in a permanent, tamper-evident electronic format that complies with the rules adopted by the secretary of state.