Alas, the free market has shown the government the error of its ways. Turns out that our math was pretty far off the mark and our suggested 20 coal ore per d was a wildly inaccurate guideline. Considering the exchange rates the market has arrived at, it makes sense to the government that we should edit our exchange rate guideline. Based on the data retrieved from the market and information bright up by /u/dangerciv and /u/roosterrroo the government has decided that an exchange rate of 64 coal ore to 1 diamond would make sense. It also divides up quite nicely! Pursuant to reccomendations from /u/Dangerciv, the government would also caution against smelting your coal until you absolutely need to as this will reduce its value.

On another note, the government has also decided that the increasing numbers of private startups in the Republic have shown that it's time to privatize as much resource exchange as possible. In an effort to facilitate this, the government has set up shop chests on the main floor of the Hub and will be offering these chests for sale. Companies and producing individuals may purchase these chests at a rate of either 1d or 64co. By purchasing a hub shop, the owner agrees to keep the chest stocked (no being out of stock for more than 72 hours without permission from the Pantarch or Chancellor once we have one) and to accept only d or co as payment for the goods offered in these chests.

Long live the Republic!

EDITED: Changed from cb to co after arguments by danger and rooster. This will be the final change to the lower material denomination.

EDIT 2: Addendum: If you plan to open up a temporary shop for less than a week (defined as 7 days), the government can grant permission to use one of the hub shop chests for that duration of time.