One of BCH pools had 51% power today
People moved some power out of it and it has now less - 47% yet still risky.
BCH Markets
Pretty much only OKEX and Huobi are exchanges i use, i think most of from here fake the vol.
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Basically its a policy that freezes the chain in carbonite after a certain block depth, so a 51% attacker can only re-org the chain so far before nodes just reject changes to blocks deeper than the limit. It doesn't prevent a 51% attack but makes it so they cannot do a deep re-org that could cause nodes to choke for hours and hours.
ABC currently does this with a rolling checkpoint of 10 blocks, so the worst an attacker can do is re-org from 10 blocks ago. This was however a hip-fired solution for the November attack pending a better system as cryptos4pz notes.
Small re-orgs of 1 or two blocks can happen naturally, but more than that is almost always the result of a malicious miner.
Thanks for your Work☺🙏
To much people don't understand crypto....
Greetings
DieReiseRitter
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