Blockscout has been developing an explorer for the Arbitrum ecosystem and Orbit chains. The open-source block explorer provides vital transparency and tools for developers including the ability to verify and interact with contracts. Our Orbit support allows L2s and L3 using Orbit to quickly spin up a full-featured block explorer.  DAppscout provides a built-in marketplace for Dapp discovery and interaction.


Our current instances for Arbitrum include:

https://arbitrum.blockscout.com/
https://arbitrum-sepolia.blockscout.com/ (currently indexing historical txs)
https://arbitrum-nova.blockscout.com/ (indexing)