in 199x in Russia the B2B economy was working basically on barter. The accounting/business software support for 5-10 segment length chains of "mutual credit" ("

in 199x in Russia the B2B economy was working basically on barter. The accounting/business software support for 5-10 segment length chains of "mutual credit" ("vzaimozachet") involving multiple business partners between your product and finally money (or something almost as liquid as money) was a feat of business software engineering separating leaders from the chaff - while the world line of a given barter chain may have been crossing spacelike/timelike boundary several times it still had to look correctly in all accounting frames of reference :) One of the things which emerged to be almost as good as money back then was "energy credits" with large power plants and networks serving as a kind of banks/clearing houses.