John Adler Profile picture
investing @OneWhatCapital, backing != endorsing, sharing != promoting

Sep 13, 2020, 5 tweets

Just published "Nakamoto Consensus Requires Social Coordination and Subjectivity"

TL;DR Nakamoto Consensus, contrary to popular belief, is not objective. It has a subjective component, just like the weak subjectivity assumption required in PoS protocols.

talk.lazyledger.io/t/nakamoto-con…

We've been told for years now by Bitcoin maximalists that PoS protocols require *fundamentally* stronger trust assumptions than PoW, in the form of weak subjectivity (asking a trusted third-party for a checkpoint if you've been offline for a while). We've been told a lie.

It's not that PoS protocols do not require social coordination; rather, it is that Nakamoto Consensus does require social coordination!

How so? It's all in the incentives.

Nakamoto Consensus doesn't work without the Nakamoto Incentive (NI): if majority of hashrate attacks the network with a re-org, a penalty is applied. And the NI does not work objectively: you cannot prove cryptographically that a re-org happened. You must be online to detect it!

For a full write-up, see the post linked in the OP. Don't forget to like, comment, and subscribe for more blockchain analysis coming soon!

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