that plugin even has bits of the joinmarket plugin
i.e. the reason i know how to do that stuff
gmaxwell came into #electrum asking how to, i realised i knew exactly what to do
proslogion
so you, you seem to know some sh*t about the situation
explain to us
belcher
oh yeah
so..
some miners didnt verify before they mined
they just got the longest block header and started hashing
without checking any of the tx or anything, including turns out this bip66 thing
proslogion
nothing? for real, nothing? i thought it's just not "fully validating"
belcher
apparently not
proslogion
so if i MITM them and send them a block with a hash not even corresponding to the preimage
belcher
yep
they will mine on it
proslogion
jeebus
belcher
stupid i know
proslogion
but i meant what's the point, sha256 is fast, that's the point of their miner
belcher
it reduces their orphans
over months and years they were getting an extra 2%
from not taking the time to verify
proslogion
well, but afaik, the part about H(block)=block header hash really takes a negligible amount of time out of everything, shouldn't they be able to do a gazillion times per second?
isn't that what they do?
belcher
yeah they do
the bottleneck is downloading the block
proslogion
okay, so they never even download the block
so i knew too little, the block wasn't propagated with the header hash? or they just, after the hash is in, cut the rest out?
belcher
hmm
i think you can request headers only
in the btc protocol
proslogion
i c
so it's pull rather than push
belcher
not sure
proslogion
so what's with the second fork? is it just a coincidence that SPV-miners mined 3 blocks in a row despite controlling a minority of the hashrate this time?
belcher
no
theres ~5% of miners who dont even follow the bip66
but when they mine a block, the ~50% of miners who dont verify will build on top of it
so the fork can grow
proslogion
yeah, but from what i saw
in the second fork
all 3 blocks were not from giant chinese pools
so was it just that they happened to mine 3 blocks in a row
belcher
1st was one of the 5%
next 2 were the 50-45%
idk
its probably not known the % miners who spv
proslogion
well, yeah, but only about 25% is in the unknown fan of the pie