Super Taxman 2 published by the Californian HAL Labs has a (c) 1981. It was announced in Dec 1982 of Softalk, and reviewed in Jan 1983. The manual contains a (c) 1982.

This crack is either from late 1982 or 1983.

000160  FF 0B 16 21 D4 C8 C5 D9 A0 C3 C1 CC CC A0 CD C5  ...!THEY CALL ME
000170  A0 D4 C8 C5 A0 C1 D2 D4 C9 D3 D4 A1 00 8D E1 B7   THE ARTIST!.Ma7