# Arbitrum is an optimistic rollup

By [Ibrahim Mitchell](https://paragraph.com/@ibrahimmitchell) · 2022-12-06

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Arbitrum is an optimistic rollup. According to TVL of each L2 chain, Arbitrum is the most trusted and popular protocol.

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*Originally published on [Ibrahim Mitchell](https://paragraph.com/@ibrahimmitchell/arbitrum-is-an-optimistic-rollup)*