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From Whatever happened to nested plasma chains? by Kelvin Fichter
of the root chain smart contract. So it made mor…ally stuck with adding a bunch of really complex rules to the root chain (Ethereum) smart contract. Unfortunately, if you modify the architecture of the child chains in any significant way, you’re also forced to rewrite most of the root chain smart contract. So it made more sense to focus on a very solid base layer before starting to think about adding mor…