Arbitrum – L2BEAT

Project overview
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Arbitrum is currently only open to whitelisted developers.

Website	arbitrum.io offchainlabs.com
Social media	@OffchainLabs @arbitrum offchainlabs discord.gg
Documentation	developer.offchainlabs.com
Explorer	explorer.arbitrum.io
Source code	github.com/OffchainLabs/arbitrum github.com/OffchainLabs/arb-os

Technology:
Optimistic Rollup
Arbitrum Virtual Machine.
Primary use case:
Universal
Hypothetical level of decentralization:
High
Current level of decentralization:
Low
Contracts are upgradable.
Can funds be stolen by the operator?
Yes, through contract upgrade
Contracts are upgradable.
Permissionless?
No
There currently exists a whitelist for using the rollup. All operations have the onlyWhitelisted modifier.
- Inbox proxy - source on Etherscan
- Inbox implementation - source on Etherscan
Force TX mechanism?
Yes
Any transaction can be submitted directly on L1.
- Aggregating Transactions - Arbitrum documentation
Privacy:
No
Smart contracts:
Yes
Automatic EVM -> AVM translation happens under the hood.