I honestly am flabbergasted at this entire thing.  Let me spell it out.  There are TWO types of people.  One has a bunch of valuable urea.  The other has a bunch of made up internet coins.  The first group is NOT giving their urea to the other group at some arbitrary 1 uro = 1 metric tonne of urea exchange rate.  If you think they are, here is a brilliant idea for you:  go create another "commodity currency" which will cost you hardly anything.  Now go convince holders of that commodity to give you their commodity in return for your made up coins.  Apparently you think they will do this based on the hope that everyone else will arbitrarily agree to the exchange rate as well.  And they will be so excited by this idea that they will incidentally make a bunch of totally non-contributing nerds rich, those nerds who were "smart" enough to stock up on the coins.

Brilliant.  Every now and then I like to watch a massive, massive disaster.  Thanks guys.

And if you think "but wait! we already have companies signed up!" here is another clue: they either do not exist or will not come through.  No one is so flagrantly giving you something for nothing, because if they did they would be fired or out of business.  "Boss I got rid of all our urea for these awesome URO coins!"  "Brilliant!"