Arc Network - Arc Docs

Arc supports payments, lending, FX, treasury management, and agentic commerce at scale. Beyond the network, Arc provides App Kits for crosschain payment workflows, AI tooling for agent-based development, and a growing ecosystem of infrastructure partners.

Key features

Stablecoin native model

USDC is the native gas token. EURC and USYC are natively supported. No volatile token required.

Stable fee design

Transaction fees are denominated in USDC, so costs stay predictable regardless of market volatility.

Deterministic finality

Transactions finalize in under one second with no risk of chain reorganization.

EVM compatibility

Deploy Solidity contracts using tools like Hardhat, Viem, and Arc Foundry.

Opt-in privacy

Confidential execution for Solidity contracts through Arc Privacy Sector (on the roadmap).

Post-quantum security

Onchain verification of SLH-DSA-SHA2-128s signatures is live on mainnet. Native wallet signing is on the roadmap.

Stablecoins on Arc

Arc is designed around stablecoins. USDC serves as the native gas token, EURC enables euro-denominated transfers, and USYC provides onchain yield. There is no volatile native token. For more information about supported assets and how USDC works natively and as an ERC-20 token, see stablecoin native model.

Network architecture

Arc has two layers. The consensus layer agrees on the order of transactions and finalizes blocks, and the execution layer runs them on the EVM.

Consensus layer: Built on Malachite BFT, delivering sub-second finality and high throughput across a permissioned validator set.
Execution layer: Powered by Reth, a Rust Ethereum client that runs the EVM so Solidity contracts, development tools, and wallet infrastructure work without modification.

For more information about each layer and how they interact, see the system overview.

Network details

Mainnet
Testnet

Property	Value
Chain ID	`5042`
Block time	~0.5 s
Consensus	Malachite BFT
Execution environment	EVM (Osaka hard fork)
Gas token	USDC
Finality	Deterministic, sub-second
Validator participation	Permissioned
Developer access	Permissionless

Property	Value
Chain ID	`5042002`
Block time	~0.48 s
Consensus	Malachite BFT
Execution environment	EVM (Osaka hard fork)
Gas token	USDC
Finality	Deterministic, sub-second
Validator participation	Permissioned
Developer access	Permissionless

To add Arc to a wallet or configure your development environment, see Connect to Arc. For RPC endpoints, chain IDs, and block explorers, see RPC endpoints. For deployed contract addresses, see contract addresses. For how Arc validators are selected and how the network is operated, see consensus layer.

Get USDC

For mainnet, you can do any of the following:

Buy USDC: Use a provider that supports Arc. Institutional customers can also buy USDC directly from Circle with Circle Mint. Contact Circle to learn more.
Bridge USDC: Move USDC you already hold on another blockchain to Arc with the USDC Bridge, or programmatically with Bridge Kit.

For testnet, get USDC from the Circle Faucet by selecting Arc Testnet.

Start building

Ready to build on Arc? Head to the Build section for quickstarts and tutorials covering smart contract deployment, crosschain bridging, App Kits workflows, and AI agent integration.

​Key features