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feat: add ARC mainnet account/asset detection #9006

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feat: add ARC mainnet account/asset detection #9006

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4cb3306
feat: add ARC mainnet account/asset detection
maxime-oe Jun 4, 2026
d4da65f
Merge branch 'main' into feat/add-arc-asset-detection
gabrieledm Jun 8, 2026
f2e813b
docs: fixed changelog structure
gabrieledm Jun 8, 2026
664288b
Merge branch 'main' into feat/add-arc-asset-detection
gabrieledm Jun 8, 2026
d44bea1
feat: add ARC mainnet to AccountsApiRemoteTransactionSource
maxime-oe Jun 8, 2026
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3 changes: 3 additions & 0 deletions packages/assets-controllers/CHANGELOG.md
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Expand Up @@ -18,6 +18,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
- Add `isDeprecated` option to `AccountTrackerController` constructor ([#9033](https://github.com/MetaMask/core/pull/9033))
- When `isDeprecated()` returns `true`, no network requests are sent and `accountsByChainId` is reset to `{}` at construction and at every entry point (`refresh`, `refreshAddresses`, `_executePoll`, `syncBalanceWithAddresses`, `updateNativeBalances`, and `updateStakedBalances`), so no stale balances remain in state.
- The function is re-evaluated on each entry point so it can be toggled at runtime without reconstructing the controller.
- Add `ARC` support ([#9006](https://github.com/MetaMask/core/pull/9006))
- Add `ARC` in `SupportedTokenDetectionNetworks`
- Add `ARC` in `SUPPORTED_NETWORKS_ACCOUNTS_API_V4`

### Changed

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1 change: 1 addition & 0 deletions packages/assets-controllers/src/assetsUtil.ts
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Expand Up @@ -160,6 +160,7 @@ export enum SupportedTokenDetectionNetworks {
Sei = '0x531', // decimal: 1329
MonadMainnet = '0x8f', // decimal: 143
Hyperevm = '0x3e7', // decimal: 999
Arc = '0x13b2', // decimal: 5042
}

/**
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1 change: 1 addition & 0 deletions packages/assets-controllers/src/constants.ts
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Expand Up @@ -20,6 +20,7 @@ export const SUPPORTED_NETWORKS_ACCOUNTS_API_V4 = [
'0x531', // 1329
'0x8f', // 143
'0x3e7', // 999 HyperEVM
'0x13b2', // 5042 Arc
];

/** Lowercase ERC-20 address for MetaMask USD (mUSD), same contract on listed chains. */
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6 changes: 6 additions & 0 deletions packages/transaction-controller/CHANGELOG.md
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Expand Up @@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0

## [Unreleased]

### Added

- Add `ARC` network support ([#9006](https://github.com/MetaMask/core/pull/9006))
- Add account address relationship API support
- Add incoming transactions API support

## [67.0.0]

### Changed
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1 change: 1 addition & 0 deletions packages/transaction-controller/src/api/accounts-api.ts
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Expand Up @@ -110,6 +110,7 @@ const SUPPORTED_CHAIN_IDS_FOR_RELATIONSHIP_API = [
1329, // Sei
143, // Monad
999, // HyperEVM
5042, // Arc
];

const log = createModuleLogger(projectLogger, 'accounts-api');
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1 change: 1 addition & 0 deletions packages/transaction-controller/src/constants.ts
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@@ -1,6 +1,7 @@
export const CHAIN_IDS = {
MAINNET: '0x1',
GOERLI: '0x5',
ARC: '0x13b2',
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BASE: '0x2105',
BASE_TESTNET: '0x14a33',
BSC: '0x38',
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1 change: 1 addition & 0 deletions packages/transaction-controller/src/helpers/AccountsApiRemoteTransactionSource.ts
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Expand Up @@ -31,6 +31,7 @@ export const SUPPORTED_CHAIN_IDS: Hex[] = [
CHAIN_IDS.SEI,
CHAIN_IDS.MONAD,
CHAIN_IDS.HYPEREVM,
CHAIN_IDS.ARC,
];

const log = createModuleLogger(
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7 changes: 7 additions & 0 deletions packages/transaction-controller/src/utils/swaps.ts
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Expand Up @@ -112,6 +112,12 @@ const HYPEREVM_SWAPS_TOKEN_OBJECT: SwapsTokenObject = {
decimals: 18,
} as const;

const ARC_SWAPS_TOKEN_OBJECT: SwapsTokenObject = {
name: 'USDC',
address: DEFAULT_TOKEN_ADDRESS,
decimals: 18,
} as const;

export const SWAPS_CHAINID_DEFAULT_TOKEN_MAP = {
[CHAIN_IDS.MAINNET]: ETH_SWAPS_TOKEN_OBJECT,
[SWAPS_TESTNET_CHAIN_ID]: TEST_ETH_SWAPS_TOKEN_OBJECT,
Expand All @@ -125,6 +131,7 @@ export const SWAPS_CHAINID_DEFAULT_TOKEN_MAP = {
[CHAIN_IDS.SEI]: SEI_SWAPS_TOKEN_OBJECT,
[CHAIN_IDS.MONAD]: MONAD_SWAPS_TOKEN_OBJECT,
[CHAIN_IDS.HYPEREVM]: HYPEREVM_SWAPS_TOKEN_OBJECT,
[CHAIN_IDS.ARC]: ARC_SWAPS_TOKEN_OBJECT,
} as const;

export const SWAP_TRANSACTION_TYPES = [
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