Are you creating another alt coin or trying to estimate the number of "dead" Bitcions for economic calculations?
Altcoin.
Is your new alt coin a brand new coin or a branch off the Bitcoin blockchain?
Got a name yet?
I named it "Scicoin" because I already had the domain for another idea (which I will retrofit into this one).
http://www.scicoin.org ; I wanted to make a coin that you do something useful like e.g. SETI@Home or fold proteins or search for prime numbers and then you get coins. What I realized is that there's a way to do that with a higher layer on top of a pure proof-of-work coin... which is what Scicoin is now, just another Bitcoin with two twists.
The code is almost ready. I just have to figure out a way to add some backpointers in the code so that a CTxOut can find its block in the blockchain... which may not be trivial at all to do :-)
By the way, this is completely absolutely awesome and is related to what I'm doing:
http://www.tomatleeblog.com/?p=175326906Obey