CCTP USDC bridge
Move native USDC between Arc Testnet, Ethereum Sepolia, and Base Sepolia using Circle's CCTP burn-and-mint flow rather than a wrapped-token bridge.
Arrow DEX
Arrow DEX is a testnet DEX for bridging USDC across Arc Testnet, Ethereum Sepolia and Base Sepolia, swapping USDC/EURC, providing liquidity and staking ARROW-LP.
Cross-chain testnet exchange
Arrow DEX is a decentralized exchange and cross-chain testnet application for moving and exchanging USDC across Arc Testnet, Ethereum Sepolia, and Base Sepolia. Its live workflows include Circle CCTP bridging, USDC/EURC swaps on Arc Testnet, liquidity provision, and staking ARROW-LP tokens for ARROW rewards.
The product is intended for users who want to test on-chain exchange workflows with public testnet assets. Wallet connections expose balances across the tracked networks, while bridge and exchange transactions are executed through deployed contracts and require the corresponding wallet approvals and network gas.
Arrow DEX is explicitly a testnet project. Its documentation identifies the pool, vault, and swap contracts as unaudited testnet code, and the roadmap separates planned capabilities such as additional pairs, routing across multiple pools, lending, governance, and an independent security audit from the functionality currently available.
Core features
Testnet asset swaps
Trade USDC and EURC on Arc Testnet through the ArrowSwap Engine, using an on-chain constant-product pricing formula and a displayed 0.30% pool fee.
Liquidity pools
Provide liquidity to the documented WUSDC/ARROW pool and add or remove liquidity as needed; LP tokens represent a redeemable share of pool reserves.
Vault staking
Stake ARROW-LP tokens in the ArrowVault contract to receive ARROW rewards streamed continuously, with no lock period stated in the documentation.
Multi-chain portfolio view
View balances and portfolio allocation across the three tracked testnet networks after connecting a wallet, with chain-specific holdings displayed by the application.
Practical use cases
Test cross-chain transfers
Move testnet USDC from Ethereum Sepolia or Base Sepolia to Arc Testnet, or between supported networks, using the approval, burn, attestation, and mint sequence.
Evaluate a token swap
Exchange USDC and EURC on Arc Testnet through the ArrowSwap Engine when testing token swap execution, quoted rates, slippage, and pool fees.
Provide and withdraw liquidity
Deposit into the documented WUSDC/ARROW liquidity pool to test liquidity provision, then remove liquidity to redeem the corresponding pool share.
Test liquidity staking
Stake earned ARROW-LP tokens in ArrowVault to test continuous ARROW reward accrual and claim or withdraw without a stated lock period.
Pros and Cons
Pros
- Supports native USDC movement between three named testnet networks through Circle CCTP.
- Provides several live DeFi workflows in one application: bridging, swapping, liquidity provision, and vault staking.
- Uses on-chain contract state for swaps, liquidity, and rewards rather than presenting those workflows as mockups.
- The bridge uses a burn-and-mint model and does not create wrapped USDC.
Cons
- The product operates on public testnets rather than production networks, so it is intended for testnet assets and workflows.
- The documented contracts have not yet received an independent security audit.
- Current live swap coverage is limited: the documented pair is USDC/EURC on Arc Testnet, while cirBTC and broader multi-pool routing are planned.
FAQ
What is Arrow DEX?
Arrow DEX is a testnet decentralized exchange that supports USDC bridging across Arc Testnet, Ethereum Sepolia, and Base Sepolia, plus USDC/EURC swaps on Arc Testnet, liquidity provision, and ARROW-LP staking for ARROW rewards.
How do I get started?
Connect a compatible wallet such as MetaMask or Rabby, or use WalletConnect. Obtain testnet USDC and gas from faucet.circle.com, then approve the wallet transactions required for bridging, swapping, liquidity, or staking.
How does the bridge work?
Arrow DEX uses Circle's Cross-Chain Transfer Protocol. USDC is approved and burned on the source chain, Circle's Iris service provides an attestation after finalization, and the attestation is submitted on the destination chain to mint native USDC. The bridge does not use wrapped USDC.
Which swaps are available?
Yes. The documented live swap is USDC to EURC and EURC to USDC on Arc Testnet through the ArrowSwap Engine. The interface shows a 0.30% pool fee, and cirBTC support is identified as planned rather than currently live.
Are Arrow DEX contracts audited?
The contracts are unaudited testnet code. The documentation says they use Uniswap V2-style AMM and Synthetix-style staking patterns, but users should treat the system accordingly and not use real funds.
Quick Facts
- Category
- Decentralized finance exchange
- Networks
- Arc Testnet, Ethereum Sepolia, Base Sepolia
- Bridge protocol
- Circle Cross-Chain Transfer Protocol (CCTP)
- Live swap
- USDC ⇄ EURC on Arc Testnet
- Swap pool fee
- 0.30% shown in the swap interface
- Access model
- Connect a browser wallet or WalletConnect; testnet assets required
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