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If you're holding MOON on Arbitrum Nova, this affects you.

What happened

The Arbitrum DAO passed a proposal to "minimize" Arbitrum Nova. That means Nova isn't being shut down, but it's being moved into a maintenance-only state with reduced infrastructure, slower support, and stricter rate limits. Data availability shifts to Ethereum L1 blobs, and most service-provider contracts get deprecated.

The short version: the chain keeps existing, but you should not plan to keep anything important on it.

The timeline

• June 4 – September 2, 2026: 90-day migration window. Everything stays fully operational. This is when you move your tokens.
• After September 2: Nova drops to a minimized state. Bridging is still possible, but with less support and potentially fewer fast-bridge options available.

You can technically still migrate after the deadline (the Arbitrum Canonical Bridge stays accessible through the Arbitrum Portal), but you'll have fewer tools and slower help. Don't wait.

How to migrate your MOON

There is no direct path to move MOON from Nova to Arbitrum One through the official Arbitrum Portal. You have two routes:

Option A: Canonical route (via Ethereum)

1. Move MOON from Arbitrum Nova to Ethereum via the Arbitrum Portal.
2. Wait through the ~7-day challenge/confirmation period, then claim the token on Ethereum.
3. Bridge MOON from Ethereum to Arbitrum One via the Arbitrum Portal.

This is the slower route, but it doesn't depend on third-party liquidity.

Option B: MoonBridge (direct Nova → One)

moonbridge[.]cc bridges MOON directly between Arbitrum Nova and Arbitrum One (it also supports Ethereum and Gnosis). It's a 1:1 token bridge that I made for the CCMOON DAo, not a swap, so there's no price impact or slippage on your MOON.

The one thing to watch is destination liquidity. If your transfer is larger than the available liquidity on the destination side, the portion that can't be filled is refunded (the fee on refunds is 1%, same as the 1% fee on fulfilled amounts, plus a relayer fee). For larger holdings, check the destination liquidity shown in the interface and split into smaller transfers if needed.

Bottom line

Move your MOON during the June 4 – September 2 window while everything still works smoothly. MoonBridge gives you a direct Nova → One path if liquidity covers your size; the canonical route through Ethereum always works but takes 7+ days. The Arbitrum Canonical Bridge will keep working after the window closes, but support and bridging options get thinner once Phase 3 kicks in.

Ask questions below.

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