If you like the idea of holding some Denarius, maybe it will interest you to know that Caesar and Tartacus, despite possible ideological differences (Tartacus is a wordplay upon the name Spartacus) have for years now been collaborating to launch a Roman civilisation in the Galactic Milieu's FreeCiv scale of play.
A civilisation whose currency is to be the New Roman Denarius (NRD), which currency has already for a long time now been implemented.
Because of course Proof of Work blockchains are ridiculously expensive media with which to implement a currency (all those third party minters, how is the civilisation expected to "back" IOUs issued by foreigners / aliens?) the base layer is the HORIZON platform, where 21 million NRD were issued.
The more convenient layer for non-players or players whose guild, party, clan or whatever (generically "group" hopefully eventually in some way to relate to GRouPcoin) has not deployed for their use a HORIZON node, and who choose not to deploy a personal one, is Stellar.
As usual, what is deployed on Stellar exists first on HORIZON, so that by looking at the "Stellar Holdings" account on HORIZON one can see how much of what has been tokenised onto the Stellar platform.
That is why the NRD token on Stellar has not minted a full 21 million yet; only such NRD as have actually been moved into the Stellar Holdings account need Stellar tokens to represent them so rather than minting the full 21 million then locking minting capability of the issuing account the Milieu takes the approach of using the size of the issued-to account's trustline to serve as indicator of how many in total were minted thus far.
The HORIZON platform however remains the canonical ledger, so for example when we start adding the DMDv4 platform a "DMD4 Holdings" account will be created on HORIZON and any assets minted onto DMDv4 will be moved into the DMD4 Holdings account just like currently assets minted onto the Stellar platform are first moved into the Stellar Holdings account on HORIZON.
HORIZON will thus continue to be where to go to find the total number of each asset that has been tokenised onto some additional platform(s).
The New Roman Denarius is a "treasury based" asset, eligible for use in the "official treasuries" of other civilisations, Corps etc; the game can thus compute for it a value per token simply by adding up the total of the values of all the things in its "official treasury", thus avoiding dependence upon "price discovery" in "spot markets", which of course is extremely important given the current and expected dearth of players devoted full-time to arbitraging and market-making and so on thus the expected and expectable inefficiency of such markets which almost certainly almost inevitably makes them unsuitable for the purpose.
-MarkM-