# Arbitrium blokchain

By [Untitled](https://paragraph.com/@0xebdcf0adefe38af491c668d4f9b3b9aa1f54b867) · 2023-03-24

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The Arbitrum blockchain uses rollups to combine multiple transactions into one, lowering on-chain transaction costs and boosting scalability. It is a type of Layer 2 Ethereum scaling solution. The original Off-chain Labs team invented the Arbitrum protocol and developed Arbitrum L2 Rollups

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*Originally published on [Untitled](https://paragraph.com/@0xebdcf0adefe38af491c668d4f9b3b9aa1f54b867/arbitrium-blokchain)*