eth_newblockfilter.md

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

eth_newBlockFilter

To check if the state has changed, call eth_getFilterChanges.

Parameters

None

Returns

QUANTITY - A filter id.

Example

Request

{% tabs %} {% tab title="Curl" %}

curl https://eth-mainnet.alchemyapi.io/v2/your-api-key \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":0}'

{% endtab %}

{% tab title="Postman" %}

URL: https://eth-mainnet.alchemyapi.io/v2/your-api-key
RequestType: POST
Body: 
{
    "jsonrpc":"2.0",
    "method":"eth_newBlockFilter",
    "params":[],
    "id":73
}

{% endtab %} {% endtabs %}

Result

{
  "jsonrpc": "2.0",
  "id": 0,
  "result": "0x9fb7f13924bb605fd29f3ddd6d193ece"
}