# AltLayer Nitrogen Testnet Launched! 🚀

**Published by:** [Alexxi](https://paragraph.com/@alexxi/)
**Published on:** 2024-01-11
**URL:** https://paragraph.com/@alexxi/altlayer-nitrogen-testnet-launched

## Content

AltLayer Nitrogen Testnet Launched! 🚀 @alt_layer today launched Nitrogen: a public @Arbitrum Orbit testnet using @CelestiaOrg as modular DA. Make sure to try it out.Add chain: https://rollup-info.altlayer.io/public/nitrogenClaim Nitrogen Testnet ETH: https://l2faucet.comDeploy a contract: https://thirdweb.com/dashboard/contracts/deployCurrently, no other dApps are available to test the chain. Stay tuned for upcoming deployments.You might encounter a "chain ID" error while adding the chain. If so, just wait for the official update; I'm experiencing this issue too.Official doc file: https://docs.altlayer.io/altlayer-documentation/external-integrations/nitrogen-orbit-celestia-testne

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