HPool, the largest – probably the only chia pool that exists today and uses a custom setup to provide pool service ‘Pool Power’ has dropped by 10% two days ago. Not sure what was the trigger but if we look at the Total Network space vs. their size they were very close to own more than half of the network. What the potential risk if somebody owns more than 51% of a blockchain based network?
A 51% attack refers to an attack on a Proof-of-Work (PoW) blockchain where an attacker or a group of attackers gain control of 51% or more of the computing power. If attackers gain control of the majority of computing power on a blockchain, they can solve the equations faster than other miners and consequently, reverse past transactions that need to be confirmed and double-spend the coins, and prevent new transactions from being confirmed.
From Keybase: There was a bug in 1.1.4, it caused nodes that received a negative value coin to not be able to win a block. Lower number of wins by a large amount of nodes over last 4608 blocks = less netspace calculation. Until a majority of nodes upgrade to 1.1.5, netspace will continue to drop due to those 1.1.4 nodes with negative value coin in their mempool will not able to win blocks.
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