Currently researching FlutterCoin.
Launched a few days ago - rocky start but seems to be stable now (i'll cut the dev some slack as this is not a copy and paste coin).
PoW, PoS and introducing Proof of Block (interesting).
Not much in the spec about PoS but looking at the code it seems to be 100% max yearly interest.
Wallet includes coin control (nice).
PoW rewards scales down over 8 years.
I also like the fact that dev is doing his best to stay below the radar and focusing on the code.
Promising - this may be the new coin I was looking for?
Mining FLT while net hashrate still low.
// miner's coin stake reward based on nBits and coin age spent (coin-days)
int64 GetProofOfStakeReward(int64 nCoinAge, unsigned int nBits, unsigned int nTime, bool bCoinYearOnly)
{
int64 nRewardCoinYear, nSubsidy, nSubsidyLimit = 10 * COIN;
CBigNum bnRewardCoinYearLimit = MAX_MINT_PROOF_OF_STAKE; // Base stake mint rate, 100% year interest
CBigNum bnTarget;
bnTarget.SetCompact(nBits);
CBigNum bnTargetLimit = GetProofOfStakeLimit(0, nTime);
bnTargetLimit.SetCompact(bnTargetLimit.GetCompact());
// FlutterCoin: A reasonably continuous curve is used to avoid shock to market
CBigNum bnLowerBound = 5 * CENT, // Lower interest bound is 5% per year
bnUpperBound = bnRewardCoinYearLimit, // Upper interest bound is 100% per year
bnMidPart, bnRewardPart;
https://cryptocointalk.com/topic/7068-fluttercoin-flt-information/https://bitcointalk.org/index.php?topic=499126.0Edit: I asked dev about PoS in Flutter and he said it's the same as NVC except that he changed lower interest bound to 5%