Arbitrum v2.0.0 Nitro Alpha 4

• Adds initial support for Arbitrum AnyTrust chains

Devnet Consensus V3.1

This release signifies a consensus version, and is not necessarily a good version to run a node on

WASM Module Root: 0x3d946791b42cc1069694cfab9feedc5d5ccd36cb792a2a7ed57b8cba412f65ac

This contains the following consensus changes from devnet consensus v3:

• Add support for devnet anytrust chain: #602

Arbitrum v2.0.0 Nitro Alpha 3

• Consensus change: Fix and improve gas price updates #551 #553
• Add arbdebug RPCs and new NodeInterfaceDebug #542
• Improve inbox reading and block creation logging #537

Devnet Consensus V3

This release signifies a consensus version, and is not necessarily a good version to run a node on

WASM Module Root: 0xdd45c240cfe6624a7dfd0b0c965bf21301ebeea7a6a2a696781a6e03b04dc288

This contains the following consensus changes from devnet consensus v2:

• Fix gas price update looking too far back: #551
• Remove top clamp on L2 price adjustment: #553

Arbitrum v2.0.0 Nitro Alpha 2

• Cleanly handle L1 connections that don't support subscriptions: #536

Arbitrum v2.0.0 Nitro Alpha 1

This is the first release of the Arbitrum Nitro node 🎉

Arbitrum Nitro is the next generation L2 rollup software and the successor to Arbitrum Classic. Nitro is a feature-complete L2 protocol whose security is rooted in Web Assembly fraud proofs. This release improves performance and compatibility via native go-ethereum EVM execution, and introduces a new node software that currently supports the public Nitro Devnet.

Devnet Consensus V2

This release signifies a consensus version, and is not necessarily a good version to run a node on

WASM Module Root: 0xb7905959ec167e0777bbbd6c339b0c98d676729cb502722aa01a34964f817ca3

This contains the following consensus changes from devnet consensus v1:

• Fix the EVM block hash opcode: #494
• Add an L2 chain owner to the devnet: #498
• Remove tips: #500

Devnet Consensus V1

This release signifies a consensus version, and is not necessarily a good version to run a node on

WASM Module Root: 0x21f708e444c3afb7689fa5d0737b3942fd19012c0081d359ba3d59b7643d7810

This is the initial consensus version launched with the devnet.