API Reference

eth_newBlockFilter

Creates a filter in the node, to notify when a new block arrives.

📘

Supported on Arbitrum One (Nitro) only.

Parameters

  • none

Returns

  • result - A filter id - to be used when calling eth_getFilterChanges.

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 '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":67}'

Result

{
    "jsonrpc": "2.0",
    "id": 67,
    "result": "0x45d234da8c854c73978b185d67d65873"
}