[Standard] MegaETH Mainnet Upgrade to v2.0.18 (Rex4 Hardfork)

Scheduled for Apr 16, 00:00 - 04:00 UTC

Scheduled

We are upgrading our MegaETH node to v2.0.18. During the maintenance window, brief interruptions to RPC availability may occur. This release activates the Rex4 hardfork — testnet at 2026-04-17 04:26:40 UTC and mainnet at 2026-04-20 04:26:40 UTC.

RPC Changes:
eth_sendRawTransaction — modified
Error messages for failed transaction submissions are now more descriptive.
debug_traceBlockByNumber — fixed
Corrected incorrect compute gas accounting in trace responses.
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https://docs.megaeth.com/spec/network-upgrades/rex4
Posted Apr 10, 2026 - 18:23 UTC
This scheduled maintenance affects: MegaETH (Mainnet - JSONRPC API, Mainnet - Websocket API).
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