# BlockchainType

> **Class** in `langchain_community`

📖 [View in docs](https://reference.langchain.com/python/langchain-community/document_loaders/blockchain/BlockchainType)

Enumerator of the supported blockchains.

## Signature

```python
BlockchainType()
```

## Extends

- `Enum`

## Properties

- `ETH_MAINNET`
- `ETH_GOERLI`
- `ETH_SEPOLIA`
- `ETH_HOLESKY`
- `POLYGON_MAINNET`
- `POLYGON_MUMBAI`
- `POLYGON_AMOY`
- `ARB_MAINNET`
- `ARB_SEPOLIA`
- `OP_MAINNET`
- `OP_SEPOLIA`
- `BASE_MAINNET`
- `BASE_SEPOLIA`
- `BLAST_MAINNET`
- `BLAST_SEPOLIA`
- `ZKSYNC_MAINNET`
- `ZKSYNC_SEPOLIA`
- `ZORA_MAINNET`
- `ZORA_SEPOLIA`

---

[View source on GitHub](https://github.com/langchain-ai/langchain-community/blob/7c10a5fa327f6aaaf7c932822a9e5d144891406e/libs/community/langchain_community/document_loaders/blockchain.py#L13)