eth_newBlockFilter - Validation Cloud

Creates a filter in the node, to notify when a new block arrives. To check if the state has changed, call eth_getFilterChanges. This method will use 40 Compute Units.

Reference: Here

Parameters

None

Returns

QUANTITY - A filter id.

// Result
{
  "id":1,
  "jsonrpc": "2.0",
  "result": "0x1" // 1
}

curl https://mainnet.optimism.validationcloud.io/v1/<YOUR_API_KEY_HERE> \
    -X POST \
    -H "Content-Type: application/json" \
    -d '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":73}'