eth_newFilter

Creates a filter object, based on filter options. To get all matching logs for specific filter, call eth_getFilterLogs. To check if the state has changed, call eth_getFilterChanges.

Parameters:

Object - The filter options:

• fromBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block

• toBlock: QUANTITY|TAG - (optional, default: "latest") Integer block number, or "latest" for the last mined block

• address: DATA|Array, 20 Bytes - (optional) Contract address or a list of addresses from which logs should originate.

• topics: Array of DATA - (optional) Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with “or” options.

Returns:

QUANTITY - A filter id.

Example:

// Request
curl https://cronos.blockpi.network/v1/rpc/your-rpc-key -X POST -H "Content-Type: application/json" --data '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"topics":["0x1234123412341234123412341111111111111111111111111111111111111111"]}],"id":1}'

// Result
{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x643ddb23a86e559f2a4fd33265cef32c"
}