
When an engine comes without a version number, like the development builds from Stockfish, version number will be the date of the last commit in reverse order.
As i'm not allowed to post links at the moment, just add app.box.com as prefix to the following strings and you get a link.

CorChess 211102:
/s/es7i38si51dq33at8ew9zgj96q2880w5
Crystal 211102:
/s/tjqu5o03g32ovi6wy5jebfnusvjcqfom
Stockfish 211031:
/s/ac5poxgyu1w989c0m3wunmkkapc8kjcf
Stockfish 211031 with embedded network:
/s/cozoi7d3heth7ce1u7038o7sd5xd09a1