Networks
Arc mainnet and Arc testnet side by side — what differs, what is only on one of them, and how Kawase keeps them apart.
Arc is Circle's stablecoin network: USDC is its gas token, so fees are paid in dollars, and transactions settle in under a second. Kawase supports exactly two Arc networks.
| Arc mainnet | Arc testnet | |
|---|---|---|
| Money | Real | Test money with no value |
| Chain ID | 5042 | 5042002 |
| Explorer | explorer.arc.io | testnet.arcscan.app |
| Getting money | Receive from any wallet or exchange that sends to Arc; buying with Apple Pay or card is coming | The in-app faucet (about 20 USDC + 20 EURC a day) |
| Earn | Morpho vaults listed by Circle's App Kit Earn | Arc Testnet's mock Morpho vaults |
| Bridge destinations | Base, Ethereum, Arbitrum, Optimism, Polygon, Avalanche | their test networks (Base Sepolia, Ethereum Sepolia, …) |
| x402 marketplace | Planned (Circle's catalog is mainnet-only) | Not available |
| Default limits | Lower | Ten times higher (no real money at risk) |
| Where new accounts start | ✓ |
Every flow in Kawase has been run end to end with real transactions on Arc testnet; the evidence is linked from the showcase's demo page. The availability below is what the app offers on each network:
| Capability | Arc mainnet | Arc testnet |
|---|---|---|
| Send money | Available | Available |
| Request money | Available | Available |
| Payment links | Available | Available |
| Contacts | Available | Available |
| Swap USDC and EURC | Available | Available |
| Any token on Arc | Coming | Coming |
| Meme coins | Coming | Coming |
| Long and short (perps) | Coming | Coming |
| Buy with Apple Pay or card | Coming | Coming |
| Bridge to and from Arc | Available | Available |
| Withdraw anywhere | Coming | Coming |
| Earn yield | Available | Available |
| Borrow | Coming | Coming |
| Automations | Available | Available |
| Pay for services (x402) | Available | Available |
| Voice | Available | Available |
| Test money | Not on this network | Available |
| Export your wallet | Coming | Coming |
How Kawase keeps them apart
- One tap to switch, both ways: see the network toggle.
- The network is shown three ways: the header pill, the testnet strip or the REAL MONEY label, and the orb's colour.
- The server owns the choice. Every payment is prepared for one network and carries it to the end; if the network changes in between, the payment stops instead of crossing over.
- One wallet address on both networks, with balances, activity and limits kept per network.