> ## Documentation Index
> Fetch the complete documentation index at: https://docs.dune.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Arc Overview

> Arc blockchain data on Dune

## What is Arc?

Arc is an open EVM-compatible Layer 1 blockchain built by Circle for stablecoin-native financial applications. USDC is the native gas token, and the network targets sub-second deterministic finality for payments, FX, treasury, and onchain markets. Dune indexes Arc under the `arc` schema namespace with standard EVM raw tables and ABI-decoded contract data.

## Key Features

* **USDC as gas**: Transaction fees are paid in USDC, so costs stay dollar-denominated rather than tied to a volatile native token. Native `value` fields and the ERC-20 USDC interface use different decimal scales (see below).
* **EVM compatibility**: Deploy Solidity contracts with standard Ethereum tooling (Hardhat, Foundry, Viem). Arc targets the Osaka EVM baseline.
* **Sub-second finality**: Malachite BFT consensus produces deterministic finality in under one second, with no probabilistic reorg window.
* **Stablecoin-native design**: Native USDC, plus first-class support for assets such as EURC, underpins payments, FX, lending, and agentic settlement.

## EVM Specifics on Dune

* **Schema namespace**: `arc` (query as `arc.blocks`, `arc.transactions`, etc.).
* **Chain ID**: `5042` (mainnet). Transaction `chain_id` is stored as `0x13b2`.
* **Native gas token**: USDC. Transaction and trace `value` fields use **18 decimals**. The ERC-20 interface at `0x3600000000000000000000000000000000000000` uses **6 decimals**. Both views share the same underlying balance — do not treat them as separate assets, and do not mix the two decimal scales.
* **Raw tables**: `blocks`, `transactions`, `logs`, `traces`, `creation_traces`.
* **Decoded infrastructure**: `arc.contracts`, `arc.signatures`, `arc.logs_decoded`, `arc.traces_decoded`.
* **Standard token events**: `erc20_arc.evt_*`, `erc721_arc.evt_*`.

## Data on Dune

<CardGroup cols={2}>
  <Card title="Raw Data" icon="database" href="/data-catalog/evm/arc/raw/blocks">
    Block, transaction, log, and trace data indexed from Arc nodes.
  </Card>

  <Card title="Decoded Data" icon="code" href="/data-catalog/evm/arc/decoded/overview">
    ABI-decoded contract interactions and events.
  </Card>
</CardGroup>

## Resources

<CardGroup cols={2}>
  <Card title="Arc" icon="link" href="https://www.arc.network/">
    Arc project home page.
  </Card>

  <Card title="Block Explorer" icon="magnifying-glass" href="https://explorer.arc.io">
    Arc mainnet block explorer.
  </Card>
</CardGroup>