Scaling & Network Infrastructure
Optimistic Rollup
A rollup that assumes transactions are valid unless someone proves otherwise during a challenge window, commonly around seven days. That window is why withdrawing from one back to the base layer through its official bridge can take a week. Arbitrum and Optimism work this way.
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General education, not investment, legal or tax advice. Markets and regulation change quickly: where a definition depends on current law or on a recent event, check the latest coverage before relying on it.