ar.tach.shash.ta identifies the king named in letters, decrees, and royal titles in Ezra.

The term is consistently used as a proper name for the king addressed in correspondence, named in royal decrees, and identified by royal title in the supplied Ezra passages.

1. Royal proper name in letters and decrees · dominant

   Each occurrence is tagged Noun · Proper and identifies the king in administrative or royal contexts. In Ezra 4:8 and Ezra 4:11, the APB renders letters written or sent to “Artaxerxes the king”; in Ezra 4:23, the king's letter is read before officials and leads to action against the Judahites. In Ezra 6:14, Ezra 7:12, and Ezra 7:21, the APB names him in a decree, a royal heading, and a decree issued to treasurers.

   Ezra 4:11Ezra 4:23Ezra 4:8Ezra 6:14Ezra 7:12Ezra 7:21

In the Anselm Project Bible: The APB consistently presents the term as “Artaxerxes,” often with “the king” or “King” in the surrounding clause. The accompanying royal titles are best read as the verse's presentation rather than as a separate rendering of the term.