Skeptics of Ethereum’s rollup-centric roadmap have speculated that layer-2 networks might eventually peel away from the ecosystem. The concern was that rollup teams would grow tired of paying Ethereum’s data availability fees and break off into sovereign layer-1 chains with their own validators.

But so far, that hasn’t happened. Instead, the gravitational pull has flowed the other way: independent layer-1s are re-architecting themselves as Ethereum L2s.

Celo and Lisk are two prominent examples. Celo launched in 2020 aiming to build a mobile-first, payments-centric L1 with its own stablecoins and identity layer. Lisk’s origins go back even further to 2016, when it launched…

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