From e37aff3646ac70303a0670bfbda331931a8ee0b9 Mon Sep 17 00:00:00 2001
From: Maxime OUAIRY <maxime.ouairy-ext@consensys.net>
Date: Thu, 4 Jun 2026 16:40:38 +0200
Subject: [PATCH] feat: add ARC mainnet to bridge controller

---
 packages/bridge-controller/CHANGELOG.md            |  5 +++++
 packages/bridge-controller/src/constants/bridge.ts |  2 ++
 packages/bridge-controller/src/constants/chains.ts |  3 +++
 packages/bridge-controller/src/constants/tokens.ts | 12 ++++++++++++
 packages/bridge-controller/src/types.ts            |  1 +
 5 files changed, 23 insertions(+)

diff --git a/packages/bridge-controller/CHANGELOG.md b/packages/bridge-controller/CHANGELOG.md
index 6bf793fa2b..c57c5e0297 100644
--- a/packages/bridge-controller/CHANGELOG.md
+++ b/packages/bridge-controller/CHANGELOG.md
@@ -7,6 +7,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Added
+
+- Add `ARC` network support ([#9007](https://github.com/MetaMask/core/pull/9007))
+  - Add `ARC` into constants `ALLOWED_BRIDGE_CHAIN_IDS`, `SWAPS_TOKEN_OBJECT` and `NETWORK_TO_NAME_MAP`
+
 ## [73.2.1]
 
 ### Changed
diff --git a/packages/bridge-controller/src/constants/bridge.ts b/packages/bridge-controller/src/constants/bridge.ts
index ad5b0a4c93..f123315cb4 100644
--- a/packages/bridge-controller/src/constants/bridge.ts
+++ b/packages/bridge-controller/src/constants/bridge.ts
@@ -22,6 +22,7 @@ export const ALLOWED_BRIDGE_CHAIN_IDS = [
   CHAIN_IDS.MONAD,
   CHAIN_IDS.HYPEREVM,
   CHAIN_IDS.MEGAETH,
+  CHAIN_IDS.ARC,
   SolScope.Mainnet,
   BtcScope.Mainnet,
   TrxScope.Mainnet,
@@ -66,6 +67,7 @@ export const DEFAULT_CHAIN_RANKING = [
   { chainId: 'eip155:1329', name: 'Sei' },
   { chainId: 'eip155:999', name: 'HyperEVM' },
   { chainId: 'eip155:4326', name: 'MegaETH' },
+  { chainId: 'eip155:5042', name: 'Arc' },
   { chainId: 'eip155:324', name: 'zkSync' },
 ] as const;
 
diff --git a/packages/bridge-controller/src/constants/chains.ts b/packages/bridge-controller/src/constants/chains.ts
index 970e105d21..3fa8482ec9 100644
--- a/packages/bridge-controller/src/constants/chains.ts
+++ b/packages/bridge-controller/src/constants/chains.ts
@@ -77,6 +77,7 @@ export const CHAIN_IDS = {
   MONAD: '0x8f',
   HYPEREVM: '0x3e7',
   MEGAETH: '0x10e6',
+  ARC: '0x13b2',
 } as const;
 
 export const NETWORK_TYPES = {
@@ -130,6 +131,7 @@ export const SEI_DISPLAY_NAME = 'Sei Network';
 export const MONAD_DISPLAY_NAME = 'Monad';
 export const HYPEREVM_DISPLAY_NAME = 'HyperEVM';
 export const MEGAETH_DISPLAY_NAME = 'MegaETH';
+export const ARC_DISPLAY_NAME = 'Arc';
 
 export const NETWORK_TO_NAME_MAP = {
   [NETWORK_TYPES.GOERLI]: GOERLI_DISPLAY_NAME,
@@ -165,4 +167,5 @@ export const NETWORK_TO_NAME_MAP = {
   [CHAIN_IDS.MONAD]: MONAD_DISPLAY_NAME,
   [CHAIN_IDS.HYPEREVM]: HYPEREVM_DISPLAY_NAME,
   [CHAIN_IDS.MEGAETH]: MEGAETH_DISPLAY_NAME,
+  [CHAIN_IDS.ARC]: ARC_DISPLAY_NAME,
 } as const;
diff --git a/packages/bridge-controller/src/constants/tokens.ts b/packages/bridge-controller/src/constants/tokens.ts
index 1c0ec09894..d1219479a9 100644
--- a/packages/bridge-controller/src/constants/tokens.ts
+++ b/packages/bridge-controller/src/constants/tokens.ts
@@ -59,6 +59,7 @@ const CURRENCY_SYMBOLS = {
   MON: 'MON',
   HYPE: 'HYPE',
   MEGAETH: 'ETH',
+  ARC: 'USDC',
 } as const;
 
 const ETH_SWAPS_TOKEN_OBJECT = {
@@ -189,6 +190,14 @@ const MEGAETH_SWAPS_TOKEN_OBJECT = {
   ...ETH_SWAPS_TOKEN_OBJECT,
 } as const;
 
+const ARC_SWAPS_TOKEN_OBJECT = {
+  symbol: CURRENCY_SYMBOLS.USDC,
+  name: 'USDC',
+  address: DEFAULT_TOKEN_ADDRESS,
+  decimals: 18,
+  iconUrl: '',
+} as const;
+
 export const SWAPS_CHAINID_DEFAULT_TOKEN_MAP = {
   [CHAIN_IDS.MAINNET]: ETH_SWAPS_TOKEN_OBJECT,
   [CHAIN_IDS.LOCALHOST]: TEST_ETH_SWAPS_TOKEN_OBJECT,
@@ -206,6 +215,7 @@ export const SWAPS_CHAINID_DEFAULT_TOKEN_MAP = {
   [CHAIN_IDS.MONAD]: MONAD_SWAPS_TOKEN_OBJECT,
   [CHAIN_IDS.HYPEREVM]: HYPEREVM_SWAPS_TOKEN_OBJECT,
   [CHAIN_IDS.MEGAETH]: MEGAETH_SWAPS_TOKEN_OBJECT,
+  [CHAIN_IDS.ARC]: ARC_SWAPS_TOKEN_OBJECT,
   [SolScope.Mainnet]: SOLANA_SWAPS_TOKEN_OBJECT,
   [SolScope.Devnet]: SOLANA_SWAPS_TOKEN_OBJECT,
   [BtcScope.Mainnet]: BTC_SWAPS_TOKEN_OBJECT,
@@ -236,4 +246,6 @@ export const SYMBOL_TO_SLIP44_MAP: Record<
   TRX: 'slip44:195',
   MON: 'slip44:268435779',
   HYPE: 'slip44:2457',
+  // No slip44 for USDC but I believe the intention is to produce CAIP format
+  USDC: 'erc20:0x0000000000000000000000000000000000000000',
 };
diff --git a/packages/bridge-controller/src/types.ts b/packages/bridge-controller/src/types.ts
index cd5e52ad93..bf2839cb44 100644
--- a/packages/bridge-controller/src/types.ts
+++ b/packages/bridge-controller/src/types.ts
@@ -347,6 +347,7 @@ export enum ChainId {
   MONAD = 143,
   HYPEREVM = 999,
   MEGAETH = 4326,
+  ARC = 5052,
 }
 
 export type FeatureFlagsPlatformConfig = Infer<typeof PlatformConfigSchema>;