Arc Testnet

UnitFlow Finance is deployed on Arc Testnet, an EVM-compatible Layer 1 blockchain. Arc Testnet uses native USDC as its gas token rather than ETH.

Network Details

Field	Value
Network Name	Arc Testnet
Chain ID	`5042002`
Native Currency	USDC (18 decimals)
Primary RPC	`https://rpc.testnet.arc.network`
QuickNode RPC	`https://rpc.quicknode.testnet.arc.network`
dRPC	`https://arc-testnet.drpc.org`
Block Explorer	testnet.arcscan.app
CCTP Domain	26

Adding to MetaMask

Open MetaMask → Settings → Networks → Add Network → Add manually:

Network Name:    Arc Testnet
RPC URL:         https://rpc.testnet.arc.network
Chain ID:        5042002
Currency Symbol: USDC
Block Explorer:  https://testnet.arcscan.app

Alternatively, connect your wallet to the UnitFlow DEX and click the network indicator in the header — the app will prompt you to add and switch to Arc Testnet automatically.

Native USDC

Arc Testnet's native USDC is at address 0x3600000000000000000000000000000000000000and uses 18 decimal places (unlike standard USDC which uses 6). This is important when:

Bridging USDC from other chains — amounts are scaled accordingly
Interacting with contracts directly — use 18 decimals for Arc USDC
Reading balances — divide by 10^18, not 10^6

Getting Testnet Tokens

See the Faucets page for links to obtain testnet USDC and other tokens needed to interact with UnitFlow Finance.

RPC Fallback Chain

The DEX application configures three RPC endpoints for Arc Testnet with automatic fallback:

https://rpc.quicknode.testnet.arc.network (primary)
https://rpc.testnet.arc.network
https://arc-testnet.drpc.org