> For the complete documentation index, see [llms.txt](https://docs.checkpoint.snapshot.box/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.checkpoint.snapshot.box/guides/indexing-ethereum-contracts.md).

# Indexing Ethereum contracts

Checkpoint initially supported indexing Starknet contracts only, but it can also index Ethereum contracts now.

{% hint style="info" %}
Checkpoint can work with any network and chain as long as there is [a provider](https://github.com/checkpoint-labs/checkpoint/tree/master/src/providers) implemented for it. Currently there is official support for Starknet and Ethereum (or any other EVM network), but external providers are supported as well.
{% endhint %}

Usage with Ethereum is very similar to usage with Starknet, differences are:

* Use full signature for event name in config (`ProposalUpdated(uint256,(address,bytes),string)` instead of `ProposalUpdated`)
* Your writers should be using `evm.Writer` instead of `starknet.Writer`.
* You should create indexer using `new evm.EvmIndexer` instead of `new starknet.StarknetIndexer`.

```typescript
import Checkpoint, { evm } from '@snapshot-labs/checkpoint';

const handleProxyDeployed: evm.Writer = async ({ blockNumber, event }) => {};
const writers = { handleProxyDeployed };

const ethIndexer = new evm.EvmIndexer(writers);

const checkpoint = new Checkpoint(...);
checkpoint.addIndexer('eth', config, ethIndexer);
checkpoint.start();
```


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