Topic · 7 insights · 3 how-tos
Circle Arc: USDC-Native Blockchain Guides
Arc is Circle's EVM-compatible layer-1 blockchain built for stablecoin payments. USDC is the native gas token, so you pay network fees in dollars rather than in a volatile coin, and blocks reach deterministic finality, meaning a confirmed payment is final rather than probably final.
SpendTheBits supports USDC on Arc mainnet from the same recovery phrase as every other chain in the wallet. You can receive and send USDC on Arc, move USDC to and from Arc through Circle's CCTP burn-and-mint rail, and accept x402 agent payments settled on Arc. If Arc is unreachable, routing falls back to the other supported chains automatically.
- Arc mainnet chain ID: 5042.
- Gas token: USDC. On Arc, USDC exists as an 18-decimal native balance and a 6-decimal ERC-20 view of the same asset.
- Cross-chain: Circle CCTP, where Arc is domain 26.
- Keys: generated and kept on your phone; SpendTheBits never holds them.
Insights
· 7 min read
What is Arc? The Arc blockchain Circle built for USDC
Learn how the Arc blockchain from Circle brings sub-second finality and predictable transaction costs to everyday digital dollar payments.
· 7 min read
USDC as gas: how Arc changes wallet UX
Discover how the Arc network integrates USDC as gas natively, removing transaction hurdles and changing the self-custodial wallet experience.
· 7 min read
Arc deterministic finality: why it matters for payments
Learn how deterministic finality on Arc settles payments instantly, eliminating confirmation delays and risk for business treasuries.
· 6 min read
How to bridge USDC to Arc with CCTP
Learn how to bridge USDC to Arc using Circle's Cross-Chain Transfer Protocol with standard and fast transfer options.
· 7 min read
Stablecoin payroll on Arc: streams without a payday
Learn how stablecoin payroll on Arc replaces old batch bank transfers with real-time money streams using SpendTheBits.
· 7 min read
x402 on Arc: agent payments with final settlement
Discover how x402 on Arc enables automated software tools to settle payments in real time with absolute finality and low costs.
· 8 min read
Native vs Bridged USDC: Why CCTP Changes the Risk
Native vs bridged USDC explained: bridged USDC is an IOU on a bridge contract, native USDC is minted by Circle. How CCTP burn-and-mint removes the lockbox.
How-to guides
- How to bridge USDC between chains4 min · step by step
- How to send crypto from SpendTheBits4 min · step by step
- How to receive crypto in SpendTheBits3 min · step by step
In the product: Cross-chain USDC · Get paid by AI agents
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