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, "latest", "pending", or "earliest".
`toBlock`	❌	String	A hex code of an integer that represents the block number, "latest", "pending", or "earliest".
`topics`	❌	Array	Array of 32 Bytes `DATA` topics. Topics are order-dependent.

"params": [{
        "topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]
}]

📘
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":[{"topics": ["0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"]}],"id":0}'

Return

{
    "jsonrpc": "2.0",
    "id": 1,
    "result": "0x99ca609e2a2cdefe285864065ccfd919"
}