Yes! Arbitrum Orbit's core technology has undergone a comprehensive audit and is now able to support deployments to mainnet. You can read more about it here.
Check our Quickstart to learn how to launch your own Orbit chain today.
You can permissionlessly launch an L3 Orbit chain that settles to one of Arbitrum's Layer 2 (L2) chains. There is an emerging licensing structure will soon make it possible to permissionlessly launch an L2 Orbit chain that settles directly to Ethereum. Please get in touch with the Arbitrum Foundation or Offchain Labs for more information.
Note that launching a testnet doesn't require any license.
No. Teams are required to deploy and maintain their Orbit chains. There are, however, several RaaS (Rollup as a Service) providers that can deploy and maintain the Orbit chain for you.
Yes, you can make any changes you require to the underlying Nitro code base.
Arbitrum Orbit currently supports 3 different DA solutions:
- Rollup, posting data to the parent chain which ultimately posts the data to Ethereum.
- AnyTrust, posting data to a Data Availability Committee, selected by the chain owner.
- Celestia, posting data to Celestia network.
Note that using AnyTrust gives the chain owner the most flexibility and cheapest fees.
By default, Orbit chains pay gas in ETH. However, Orbit chains using AnyTrust can be configured to use any ERC-20 token as the gas fee token of the chain.
Orbit chains are fully EVM-compatible. Most tools that support Ethereum should be able to support an Orbit chain. There are, however, certain differences that developers need to keep in mind when building on an Orbit chain. You can find them here.
Not by default, but they can be customized to have native AA.
There is currently no Orbit-to-Orbit native bridging solution, other than going through the parent chain (if they share the same parent chain). However, there are many third-party bridges that have expressed interest in supporting Orbit chains.
Orbit chains deployments usually come with an open-source blockscout explorer by default, but there are many third-party solutions that have expressed interest in supporting Orbit chains.
Similar to bridges and block explorers, there are many third-party indexing solutions that have expressed interest in supporting Orbit chains.