Creates a filter in the node, to notify when a new block arrives.
Parameters
None.
Returns
QUANTITY - A filter id.
Example
curl -X POST 'https://api.shasta.trongrid.io/jsonrpc' --data '{"jsonrpc":"2.0","method":"eth_newBlockFilter","params":[],"id":1}'
Result
{"jsonrpc":"2.0","id":1,"result":"0x2bab51aee6345d2748e0a4a3f4569d80"}