Launch any application today on the Arbitrum Rollup testnet
Change your RPC provider to https://kovan5.arbitrum.io/rpc
Redeploy your contracts
Have fun and save money
Visit the Arbitrum block explorer to monitor testnet usage and learn about gas savings.
The Token Bridge lets you transfer ETH and tokens between Ethereum's Kovan testnet and Arbitrum Rollup.
Learn more about how Arbitrum Rollup works under the hood and the software that makes it all possible.
Just want to start building? The quick start guide will get you building on Arbitrum in minutes.
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