post
https://api.infstones.com/bsc/mainnet/
Creates a filter object, based on filter options, to notify when the state changes (logs).
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Parameters
OBJECT - The filter object
| Object Name | Required | Type | Detail |
|---|---|---|---|
address | ❌ | String/Array | Address or a list of addresses from which logs should originate. |
fromBlock | ❌ | String | A hex code of an integer that represents the block number, or "latest" for the last mined block. "pending", "earliest" for not yet mined transactions. |
toBlock | ❌ | String | A hex code of an integer that represents the block number, or "latest" for the last mined block. "pending", "earliest" for not yet mined transactions. |
topics | ❌ | Array | Array of 32 Bytes DATA topics. Topics are order-dependent. Each topic can also be an array of DATA with "or" options. |
"params": [
{
"fromBlock": "0x1",
"toBlock": "0x2",
"address": "0x8888f1f195afa192cfee860698584c030f4c9db1",
"topics": [
"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
null,
[
"0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b",
"0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc"
]
]
}
]Specifying topic filters:
Topics are order-dependent. A transaction with a log with topics [A, B] will be matched by the following topic filters:
- [] “anything”
- [A] “A in first position (and anything after)”
- [null, B] “anything in first position AND B in second position (and anything after)”
- [A, B] “A in first position AND B in second position (and anything after)”
- [[A, B], [A, B]] “(A OR B) in first position AND (A OR B) in second position (and anything after)”
Result
A hex code of an integer that represents the newly created filter ID.
Example
Request
curl <your-endpoint> \
-X POST \
-H "Content-Type: application/json" \
-d '{"jsonrpc":"2.0","method":"eth_newFilter","params":[{"fromBlock": "0x1","toBlock": "0x2","address": "0x8888f1f195afa192cfee860698584c030f4c9db1","topics": ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", null, ["0x000000000000000000000000a94f5374fce5edbc8e2a8697c15331677e6ebf0b", "0x0000000000000000000000000aff3454fce5edbc8cca8697c15331677e6ebccc"]]}],"id":0}'Return
{
"id": 0,
"jsonrpc": "2.0",
"result": "0x12bf38f0a996df1bb6604e1055470420"
}