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eth_newBlockFilter RPC Method

Creates a filter in the node, to notify when a new block arrives. To check if the state has changed, call eth_getFilterChanges.

Updated on
Oct 15, 2026

Parameters

This method does not accept any parameters

Returns

result
string

It returns a filter id to be used when calling eth_getFilterChanges

Request
Response
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": "0x32cc06e803521ae0f3f3c219d53e95e2"
5
}
1
{
2
"jsonrpc": "2.0",
3
"id": 1,
4
"result": "0x32cc06e803521ae0f3f3c219d53e95e2"
5
}
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