Question > Category > Blockchain

Q » What is optimistic rollup?

Jamessd

02 Nov, 2025

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A » Optimistic rollup is a layer 2 scaling solution for blockchains, designed to increase transaction throughput and reduce costs while preserving security. It operates by executing transactions off-chain and posting only minimal data on-chain, assuming transactions are valid unless proven otherwise. Disputes can be raised by validators within a set period to ensure accuracy, making optimistic rollups both efficient and reliable for scaling blockchain networks.

Michael

03 Nov, 2025

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All Other Answer

A »Optimistic rollup is a layer 2 scaling solution for blockchain that batches transactions off-chain and assumes they are valid, only verifying them on-chain if a dispute arises. This approach reduces congestion and fees on the main chain, improving scalability and efficiency.

David

03 Nov, 2025

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