Ethereum Pectra Upgrade Arrives on Layer-2 Arbitrum

Description

Arbitrum has activated Ethereum’s Pectra upgrade through ArbOS 40 “Callisto,” introducing advanced features like account abstraction, enhanced zk tooling and improved developer experience. This marks a major step in Layer-2 scalability and functionality.

Authors

Tomiwabold Olajide

Publish date

June 18, 2025

Publisher

U.Today

Web URL

https://u.today/ethereum-pectra-upgrade-arrives-on-layer-2-arbitrum

Referenced by

This upgrade brings new capabilities from Ethereum’s Pectra hard fork, including EIP-7702 (Account Abstraction), EIP-2537 (BLS Precompile), EIP-2935 (Block Hash Access) and a minor Stylus fix for devs.

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ArbOS 40 also integrates EIP 2537 (native BLS precompiles). This EIP introduces precompiles on the BLS12-381 curve, boosting efficiency and security.

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The Pectra network upgrade was activated on the Ethereum mainnet on May 7, 2025, at epoch 364032.

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