What % of KMD supply is PoW, or is 100% ico from genesis? Is there a tail emission like xmr?
After ICO it is half the lifetime emission.
After that, stakes get 5% per year, plus there is a blockreward starting at 3KMD, with halvings.
When coin supply reaches 200 mil, it will just be txfees, but that wont be for over 10 years
There is a backup block generation method using equihash PoW, but this will only be used when there are no notary nodes. In order to allow both methods to coexist, similar to how peercoin allows PoW and PoS to coexist, the notary side will be given priority.
I guess if there is an extremely large amount of hashpower, even in the presence of notary nodes, the PoW could generate a block, but I doubt it would make economic sense unless KMD price goes to much higher levels than expected.
For the hardware/miner peoples, the way to earn KMD is by running one of the 64 notary nodes. Payouts will be calibrated to be around $500 per month per notary node, so in the even the KMD block rewards are not sufficient, payments to the notary nodes will be made in BTC to make up the difference.
Right after the ICO is completed, we will have elections to select the 64 notary node operators. I am currently working on the voting system and this will be the first thing we need to do after genesis. Between genesis and the notary nodes coming online is the only pure PoW period that is expected.
Thanks for comprehensive answer, your model is very well thought out. Will there be some minimum stake required to run a notary node like dash, or is the vote the single determinant? How notary node operators are selected and governed to keep komodo decentralised will be critical, I look forward to more details on that when you have them.
The notary nodes will earn KMD, no KMD is needed to be elected, though it could be the voters will give more preference to known and large KMD stakeholders.
The notary nodes are elected by stake. A somewhat arbitrary division of the geolocation into 4 areas: North America, Europe, Asia, Southern Hemisphere will be used to ensure no over concentration in any specific region of the world.
Each notary operator could run up to 1 node per region, if they win of course. For anybody to try to get more than one spot, they would need to pass the turing test in realtime as the notary operators will actively cooperate with each other and also there will be a certification tests to verify hardware performance.
With 16 notaries in each of the 4 areas, we end up with 4 elections in parallel for the 16 spots. So each voter can vote 4 times, once per region. Of course a person's stake will allow voting for that many spots and this is one of the reasons for a large scale ICO, to ensure as wide of a stakeholder base as possible, without any large concentration of voting power.
However, with the separation of powers, the notary nodes are able to create blocks and earn the block reward and also determine which valid tx are included in a block. However, they wont have any powers to spend any funds that are not theirs. And unless a majority of nodes are compromised, the notary process is not affected. Of course, any misbehaving notary will be detected and soon be replaced.
As with any crypto, any 51% control leads to a failure mode, but with dPoW any such majority control of notaries would be temporary. If somebody is able to accumulate 51% of all KMD, then we assume that they wont have the motivation to damage.