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10 sats \ 9 replies \ @Murch 19 Oct 2023 \ on: Normal & Rare. bitcoin
I think we haven’t had a multiblock reorg in something like five years
What is the most large multiblock reorg in the history?
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The fix to the March 2013 chainsplit between version 0.7 and 0.8 reorged out a chain of 25 blocks (although some miners kept building on it until the fork chain was 32 blocks long). The longest natural reorg was 4 blocks starting from block 174161.
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Is possible make 100?
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Theoretically yes, but incredibly expensive and as an attack completely unreasonable
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If is theoretically and unreasonable why the Coinbase tx need 100 blocks of maturity to spend it?
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The only downside of overestimating the maturation period is that miners can spend their reward with a slightly longer delay. The downside of underestimating it is that you create an incentive to attempt long-range reorgs. 100 blocks to be on the safe side seems completely fine to me.