This will be very hard mine...
Just buy some greencoins and exchange them. No need to mine or waste resources on mining as there will be 6m coins on the market shortly.
that is correct: in order to be able to give folks enough time to exchange coins for the ones actually backed by carbon (now only the new coin) we are exchanging all coins until block 500,000 and GRE is on block 363939 (727.9 M out of 1B coins) so there will be another 272.1 M to get spit out before we no longer would accept them. So 1.63 M of the 6 M haven't even been claimed yet.
Block 363,939 hit at 8 PM and is the block representing the final payout to producers that will be made in GreenCoins representing production through today (Feb 27th, and, assuming the new coin keep chugging along of course). Tomorrow's producer payout will be made from newly minted CO2X coins