> For the complete documentation index, see [llms.txt](https://docs.zama.org/protocol/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.zama.org/protocol/protocol-apps/chains.md).

# Chains

This page lists the chains involved in the Zama protocol, their block explorers, RPC endpoints, chain IDs, and LayerZero configurations.

## Mainnet

### Block explorers

* Ethereum: <https://eth.blockscout.com/>
* Polygon: <https://polygon.blockscout.com/>
* Gateway: <https://explorer.mainnet.zama.org/>
* BSC: <https://bscscan.com/>
* HyperEVM: <https://hyperevmscan.io/>
* Solana: <https://solscan.io/>

### RPC endpoints

* Gateway: <https://rpc.mainnet.zama.org>

### EVM chains - Chain IDs

Not to be confused with Endpoint IDs (see section below).

| Name       | Chain ID |
| ---------- | -------- |
| `Ethereum` | 1        |
| `Polygon`  | 137      |
| `Gateway`  | 261131   |
| `BSC`      | 56       |
| `HyperEVM` | 999      |

**Note:** These are only for EVM chains, Solana does not have a chain ID (but has a LayerZero endpoint ID).

### LayerZero

#### Endpoint IDs

Those are LayerZero specific and should not be confused with Chain IDs (see section above).

| Name       | Endpoint ID (eid) |
| ---------- | ----------------- |
| `Ethereum` | 30101             |
| `Polygon`  | 30109             |
| `Gateway`  | 30397             |
| `BSC`      | 30102             |
| `SOL`      | 30168             |
| `HyperEVM` | 30367             |

## Testnet

### Block explorers

* Ethereum Sepolia: <https://eth-sepolia.blockscout.com>
* Gateway Testnet: <https://explorer.testnet.zama.org/>
* Polygon Amoy: <https://amoy.polygonscan.com/>

### RPC endpoints

* Gateway Testnet: <https://rpc.testnet.zama.org>

### EVM chains - Chain IDs

| Name               | Chain ID |
| ------------------ | -------- |
| `Ethereum Sepolia` | 11155111 |
| `Gateway Testnet`  | 10901    |
| `BSC Testnet`      | 97       |
| `Polygon Amoy`     | 80002    |

### LayerZero

#### Endpoint IDs

| Name               | Endpoint ID (eid) |
| ------------------ | ----------------- |
| `Ethereum Sepolia` | 40161             |
| `Gateway Testnet`  | 40424             |
| `BSC Testnet`      | 40102             |
| `Polygon Amoy`     | 40267             |


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