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183 sats \ 2 replies \ @lukedewolf OP 14 Jul \ parent \ on: I'm Luke de Wolf, Author of Defending Bitcoin, AMA security bitcoin AMA

You're right that the coinbase and a growing number of pre-requisite transactions will not be valid on the 110 chain. At the beginning, all non-spam transactions, essentially, will be valid on either chain. And, for a while, most transactions will need to worry about which chain they land on. I believe that does answer your question.

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81 sats \ 0 replies \ @Murch 14 Jul
And, for a while, most transactions will need to worry about which chain they land on.

"Which chain they land on" kind of sounds like they could only land in one chaintip. May I ask what you meant with that?

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114 sats \ 0 replies \ @optimism 14 Jul

Yeah, that window is 100 blocks unless there is overtake risk (40%+ basically, though if some pools do not pay attention, it could be done with less; 34% selfish BIP-110 versus a naive 66% non-110 - though that is unlikely, it is not like this is a stealth op.)

So this is what happens:

The exact constraint for "worry" is that within the first 100 blocks post factual fork, when forked coinbases are unspendable, BIP-110 has between 34% and 66% of realized hash power. If it doesn't have that, it's either succeeded or failed and there is nothing to worry about. I think that the whole thing balances on whether you think that this 34%-66% scenario is likely. I don't see it right now, but maybe I am naive.

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