I heard a lot of people say no one could define an L2 at Bitcoin Asia. The problem is that we have a definition, and most people just want to ignore it. Marketing, eh.

“Bitcoin L2s” are the hottest thing on the street. People are using a bunch of jargon to distract users from trust assumptions and shill Bitcoin Season 2.

Why all the sudden energy? See, about a year ago, some teams figured out how to use Bitcoin as a data availability layer for rollups. Others have been working on improving trust assumptions related to bridges (aka two-way peg). The research has been making great progress, and a lot of projects think we’ll have rollup-like blockchains in production by 2025.

2025? Some…

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