http://qntra.net/2016/03/a-miner-problem/ Has someone who knows more about Bitcoin know what's going on here? Is this actually proof of there being a secret-chain held by some miners with 51% of the hashrate? Or could it just be down to a 0 fee transaction taking a long time to go through?
This is a Bitcoin related problem. Decred doesn't have this issue except in the case that 51% of the ticket stakeholders are working with 51% of the PoW miners to produce secret chains. A PoW miner without stake tickets can not produce a secret chain because their chain will have no votes.
Even with 51% of the PoW and PoS working together, you would still struggle to make a significant secret chain, since you'd need 3/5 votes for several blocks in a row. You might get 1 or 2 blocks, but the odds of a large extension you can keep in reserve become vanishingly small very quickly!
Good point. I too was thinking it would take 51% of PoW and 51% of stake tickets but the random nature of stake selection does make this highly unlikely. I am even more confident of decreds future as far as this type of issue is concerned.
I want to know more about it. Surely, nowadays there are a lot of problems online and offline with the profit receiving. But this seems to increase it and rather effectively.