Write a Multistaking client or Ask Gmax to write one for you, as he made up the nonsense to fool people like you to start with.
After he writes one. You show me the damage it can do.
But to be honest, I'll be laughing at you and him, because I already know it is a waste of time.
What stops a group of attackers to collude with most of the "stake", and create healthy looking chains they control?
In PoS , the strongest chain is the one with the most coins and the highest difficulty.
In PoW, the strongest chain is the one with the most hashrate.
In PoS, collusion to dominate a PoS chain would need to be close to 90% to maintain the same dominance that
In PoW, collusion to dominate a PoW chain only needs 51%.
Answer to your question is nothing stops a group from colluding in PoS or PoW to exert dominance on a chain.
The only thing blocking them is the required % required to pull it off,
And PoS requires 39% more to pull off a collusion than PoW.
Also to actually profit a PoS user has to sell his coin, which drops his ability to continue any collusion.
PoW miners can sell every useless coin their asics create, and never decrease their % control by even a tiny fraction.
PoS coins have value to their respective networks by securing it,
PoW coins only have value for greater fools that buy useless tokens that they themselves (aka slaves) can not mine or secure,
without their masters know as miners.
You're confusing PoW where a Miner can mine multiple coins on different networks,
ie: BTC, BCH, BSV can all be mined by ASICS running SHA256
In PoS, coins can only stake on their own network, their is no crossover in staking coins.
Each staking coin network is isolated from ASIC nonsense and other coins networks.
So if you buy zeitcoin, you can only stake zeitcoin.
In PoS , the value is in the coin,
In PoW, the value is in the ASIC.
(Which allows the PoW miners to play all of the coins holders against each other that their ASICS Dominate.)
BTC holders talk junk about BCH & BSV holders.
BCH holders talk junk about BTC & BSV holders,
BSV holders talk junk about BTC & BCH holders.
But the very same miners are playing all of the holders for fools.
Which is why none of these networks have died yet.
No, he is one of the CIA analyst on Team satoshi.
(Not even Japanese.)
Provide a list.
Then contact that specific coin developer and ask them why.
ZEITCoin Like Bitcoin has used hard coded checkpoint in source code over the years during major updates.
But their are no checkpoint servers like you claim that are running constantly , only the strength of the staking is securing ZEIT.
FYI:
Funny enough ZEITCOIN does not even bother with rolling checkpoints ,
but one of your ASICS coins, BCH does use a 10 block rolling checkpoint.
https://blog.bitmex.com/bitcoin-cash-abcs-rolling-10-block-checkpoints/
So does that make all PoW coins like Bitcoin insecure, since BCH uses rolling checkpoints.
* Note rolling checkpoints are determined by the network and not a 3rd party. *