Part of the purpose of the tables at
http://galaxies.mygamesonline.org/digitalisassets.html is to make it easy for companies to accept any of various different currencies.
For example although GMC generally expresses prices in terms of its own currency (also known as GMC), and GRF does likewise with its GRF currency, it is common nowadays for the folks selling stuff to them to ask to have their pay applied against their debt; and ever since General Financial Corp came along refinancing of that debt has become commonplace.
Thus quite often when GMC or GRF buys stuff the price paid is to be applied not against debt the supplier owes to them but, rather, debt owed in CDN to the Canucks or in UKB to the Brits or in UNS to the (Galactic) United Nations or in DVC to GFC, DeVCorp, GDC or GRC.
Markets would just make that way too complicated, so instead we have these tables. The supplier tells them please apply my pay to my DeVCoin-denominated debt that I owe to GFC. GFC looks at how many GMC is being paid against the debt, multiplies it by the number of DVC those tables claim GMC is worth, and apply that number of DVC against the DVC-denominated debt.
The fact that the interest rates on the debts are usurious helps, of course, against any "currency conversion risk" using such tables might expose the corps to.
This all means though that as well as the deliberately/specifically DeVCoin-oriented corps DeVCorp, General Financial Corp, General Development Corp and General Retirement Corp accepting DeVCoins, the two massive multigalactics GMC and GRF who have their own currencies are also able to accept DeVCoins, as are the Brits via their corps such as British Colonial Enterprises, British Colonial Investments, British Mining Corp, British Retirement Funds et al and the Canucks via corps such as Canadian Mining Corp, Canadian Retirement Funds and so on. Basically all the major players are quite used to the galaxy having multiple currencies in play and well adapted, at least as long as those tables continue being available to them, to accepting them. (The Martians also have similar corps but seem to have been staying more behind the scenes so far and their corps do not have contracts on the
DIgitalis Open Transactions server yet due to there having been a typo in the Martian Retirement Funds contract which derailed the process of getting contracts onto the server for their bunch of corps similar to the Brit and Canuck corps.)
-MarkM-