If it was made 68K only and mining adjusted for Amiga I would give it a go otherwise no thanks :/
Mining cryptocurrencies maxes out your hardware 24/7 which is something it was never designed to do. Not only that but your vintage hardware is extremely inefficient CPU per cycle and replacement parts vary from expensive to unattainable. Its not like running a BBS were your system is just on 24/7.
This would be akin to driving for UBER in a mid to late 50's gas guzzler with unsynchronized 3 speed manual transmission, unassisted drum brakes and non-power steering. Not a good model for success...
The wallet working on classic hardware would probably be enough
