post https://api.zan.top/node/v1/bsc/mainnet/
'Creates a filter object based on filter options to enable notifications (logs) for state changes.'
'You can use the eth_getFilterChanges method to check whether the state of the filter has changed.'
Limits:
- The filter expires if it remains inactive (no queries) for 5 minutes.
- To ensure the efficiency of filter execution, it is recommended to query a range of no more than 5,000 blocks.
Request Parameters
- Filter object
- address - [Optional] The contract address or the list of log addresses.
- fromBlock - [Optional. Default value: "latest"] - A hexadecimal block number, or the string "latest", "earliest", or "pending".
- toBlock - [Optional. Default value: "latest"] - A hexadecimal block number, or the string "latest", "earliest", or "pending".
- topics - [Optional] - An array of 32-byte. Topics are order-dependent.
A note on topic filters: Topics are strongly order-dependent. A transaction with topics of [A, B] can be matched by the following topic filters:
[]: any topic[A]: A in the first position (and any position after)[null, B]: anything in the first position and B in the second position (and any position after)[A, B]: A in the first position and B in the second position (and any position after)[[A, B], [A, B]]: (A or B) in the first position and (A or B) in the second position (and any position after)
Response
The unique ID of the filter.
Result Fields
- FILTER ID: a hexadecimal string, which indicates the ID of the newly created filter.
Examples
Example Responses
{
"jsonrpc": "2.0",
"id": 1,
"result": "0x1e081"
}