API Reference

eth_chainId

Returns the current network/chain ID, used to sign repplay-protected transaction introduced in EIP-155.

📘

Supported on Arbitrum One (Nitro) only.

Parameters

  • none

Returns

  • quantity - EIP155 Chain ID.

API Endpoint

The format of an Arbitrum Nova API endpoint is
https://open-platform.nodereal.io/{{apiKey}}/arbitrum-nitro/

Here is an example:
https://open-platform.nodereal.io/4c0a1c23661a4e26bcbcwed461e34ea9/arbitrum-nitro/

Example

Request

curl https://open-platform.nodereal.io/{{apiKey}}/arbitrum-nitro/ \
  -X POST \
  -H "Content-Type: application/json" \
  --data '{"method":"eth_chainId","params":[],"id":1,"jsonrpc":"2.0"}'

Result

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0xa4ba"
}