From the PPCoin Wikipedia: https://en.wikipedia.org/wiki/PPCoin:
Edit: Inflation is “Limited release (Geometric series, rate halves every 4 years)”
It’s not a hard limit… but it is still controlled by the system… you can’t just decide to increase the amount of coins overnight, the market will still have to build its way there if it is ever going to reach it.
“Although PPCoin technically has a cap of 2 billion coins, it is only for consistency checking, and the cap is unlikely to be reached for the foreseeable future. If the cap were to be reached, it could easily be raised, hence for all practical purposes PPCoin can be considered to have inflation of 1% per year, with a limitless money supply.”
From the FAQ: http://www.ppcointalk.org/index.php?topic=8.0
Q: Is there a cap on total money supply like Bitcoin’s 21 million?
A: "[i]There is no hard cap other than a 2 billion coin max put into the code for now. But that should not be interpreted as an approachable cap, as it might never get anywhere close to that. It should not be considered a hard cap either as it may get lifted but that’s likely not needed in a very very long time. Due to the nature of the mint rate design it’s not possible to predict a final limit as it depends heavily on market participation, as well as the influences between proof-of-stake minting and fee destruction (there may not even be a mathematical limit if minting continues to outpace fee destruction). What we do know is that the proof-of-work minting would slow down exponentially according to Moore’s Law (we are aware that Moore’s Law eventually would stop to apply), and proof-of-stake minting introduces at most 1% annual inflation. So generally speaking it is still a very low future-inflation design comparable to Bitcoin.
In 0.2 release a ‘moneysupply’ stat is included in the getinfo output so everyone can see how many coins are in the market.[/i]"
From the white paper: http://www.ppcoin.org/static/ppcoin-paper.pdf
“Even though Bitcoin has relatively strong protection over the history Nakamoto still introduced checkpoints in 2010 as a mechanism to solidify the block chain history, preventing any possible changes to the part of block chain earlier than the checkpoint.”
I am not completely sure, so correct me if I’m wrong, but if you read this part closely…
“We modified the proof-of-work mint rate to be not determined by block height (time) but instead determined by difficulty. When mining difficulty goes up, proof-of-work mint rate is lowered. A relatively smooth curve is chosen as opposed to Bitcoin’s step functions, to avoid artificially shocking the market. More specifically, a continuous curve is chosen such that each 16x raise of mining difficulty halves the block mint amount.”
I believe you have to distinguish that the mint “rate” is separate from the mint “amount”. So it is talking about the frequency (rate) of minting being controlled by the difficulty, and also talking about the number of coins (amount) that is minted on each frequency.
Does that make any sense?
