PPCoin is now third only to Litecoin and Bitcoin for market cap!

[tacotime]

Still trying to wrap my head around this;

You have 10,000 people attempting to mine stake blocks.  A has 30,000 coin years, and B has 10,000 coin years, and the rest of the network have less than 10,000 coin years.

B mints a stake block and the rest of the network mints stake blocks on top of B.

Can A fork the chain by declaring a chain in which he mints a stake block in place of B's block?  I would guess you made that forbidden by timestamp, but if A decides he doesn't like a transaction in block B, what's to stop A from announcing a new block and in effect destroying that transaction before the next person adds a block?  Is there anything in place to stop malicious stake mining like that, or is that the "51%" stake attack?

51% stake attack doesn't seem to require 51% of the coins either, since 51% would be based upon the assumption that everyone in the network is holding coins to mine stake blocks.  However, if most coins are being used for actual transactions, the required amount of stake to fork the network is actually only a fraction of 51%.

A problem also may arise when you have 10,000 people all making hundreds of possibly valid chains at the same.  If all these 10,000 people are announcing valid stake blocks at the same time, how do you avoid network congestion because the users are all required to figure out what the most valid chain is (chain with the most coinstakeage)?  Won't you generate hundreds or thousands of orphan chains?

[mr_random]

Still trying to wrap my head around this;

You have 10,000 people attempting to mine stake blocks.  A has 30,000 coin years, and B has 10,000 coin years, and the rest of the network have less than 10,000 coin years.

B mints a stake block and the rest of the network mints stake blocks on top of B.

Can A fork the chain by declaring a chain in which he mints a stake block in place of B's block?  I would guess you made that forbidden by timestamp, but if A decides he doesn't like a transaction in block B, what's to stop A from announcing a new block and in effect destroying that transaction before the next person adds a block?  Is there anything in place to stop malicious stake mining like that, or is that the "51%" stake attack?

51% stake attack doesn't seem to require 51% of the coins either, since 51% would be based upon the assumption that everyone in the network is holding coins to mine stake blocks.  However, if most coins are being used for actual transactions, the required amount of stake to fork the network is actually only a fraction of 51%.

A problem also may arise when you have 10,000 people all making hundreds of possibly valid chains at the same.  If all these 10,000 people are announcing valid stake blocks at the same time, how do you avoid network congestion because the users are all required to figure out what the most valid chain is (chain with the most coinstakeage)?  Won't you generate hundreds or thousands of orphan chains?

Bear in mind Sunny doesn't get paid money to develop PPCoin he does it all in his spare part time. Just saying this because you are asking Sunny a lot of technical questions all over the forum which I am sure is time consuming for him and he is probably too polite to say this (excuse me Sunny if I mis-speak here)

[tacotime]

If Sunny can answer them well, I'll buy more PPC.

This forum is public material, and if Sunny answers these questions people will be able to google them later and find the answer.  I'm just trying to further my understanding of the coin, rather than placing my money in it before understanding it.  And of course, Sunny need not answer anything if he doesn't want to; someone else who has gone through the code is welcome to.

For instance, I can ask any number of technical questions in the bitcoin dev board and have them answered within a few hours because the number of persons understanding the protocol is vast and the number of people involved in development great.  However, the same can not be said for PPC as Sunny is largely the only dev.

If the problems above are real theoretical problems with the chain, however, they represent issues that the userbase should be aware of.

[samson]

Better spend it before it generates worthless unspendable stake coins.    I have a big cache of it right now, still waiting to see how high it goes before I dump it.

Dumping is the idiots way of selling

[smoothie]

Even though I know this is not going to be true. I wish you all the ability to profit from your trading with PPC.

I will not touch it. Happy trading!

[chriswen]

I assume you are referring to

The hash target that stake kernel must meet is a target per unit coin age (coin-day)
consumed in the kernel (in contrast to Bitcoin’s proof-of-work target which is a fixed
target value applying to every node). Thus the more coin age consumed in the kernel, the
easier meeting the hash target protocol. For example, if Bob has a wallet-output which
accumulated 100 coin-years and expects it to generate a kernel in 2 days, then Alice can
roughly expect her 200 coin-year wallet-output to generate a kernel in 1 day.
In our design both proof-of-work hash target and proof-of-stake hash target are adjusted
continuously rather than Bitcoin’s two-week adjustment interval, to avoid sudden jump in
network generation rate.

?

So, after a certain point, only people with older coins or with vast quantities of coins (producing greater coin age more quickly) will be able to mint stake blocks?

After 90 days coin age doesn't matter for PoS shares.  So you don't get a better advantage for mining after 90 days.  But you do get higher PoS reward.  But first you have mine the PoS block.  I have 5.9 from 8/28/12.  But, I just launched my client again a few days ago.  Now difficulty is high and its only 90 days.  So itll take a long time for me to mine a stake block.

[sublime5447]

I would like some of these coins I am going to set up a miner tomorrow and hope to dedicate it to this coin. This was the same as the idea I had for a coin so I would like to support it. If any of you guys mine them and would  be willing to sell for PP I would be interested in buying.