POST
/
3997273fc956a67dc6982384500e669e
curl --request POST \
  --url https://ronin-mainnet.core.chainstack.com/3997273fc956a67dc6982384500e669e \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "eth_getFilterChanges",
  "params": [
    "0x1fb7f4c4e3e6af9d892f657ccaa77a7c"
  ]
}'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": [
    {
      "removed": true,
      "logIndex": "<string>",
      "transactionIndex": "<string>",
      "transactionHash": "<string>",
      "blockHash": "<string>",
      "blockNumber": "<string>",
      "address": "<string>",
      "data": "<string>",
      "topics": [
        "<string>"
      ]
    }
  ]
}

Ronin API method that returns an array of log objects for all logs that have occurred since the last poll on the Ronin node. This method is used to retrieve event logs for a specific filter, which can be particularly useful for dApps that need to react to specific contract events.

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​
Parameters

  • filter_id — a single filter identifier as a hexadecimal string. This filter ID is returned by eth_newFilter or eth_newBlockFilter and is used to poll for changes to the filter.

Disclaimer

Note that the default interactive example in this page will not work as the filter will be expired.

To test eth_getFilterChanges in this page, first create a new filter using one of the following:

Then use the fresh filter ID as the parameter for eth_getFilterChanges.

​
Response

  • result — an array of log objects. Each log object contains details about the event, including whether the log was removed (due to a chain reorganization), log index, transaction index, transaction hash, block hash, block number, address that generated the log, data associated with the log, and topics (event signatures and indexed event parameters).

​
Use case

The eth_getFilterChanges method is essential for decentralized applications that need to monitor specific events on the blockchain. For example, a dApp might use this method to listen for token transfer events or contract interactions that trigger specific functionalities within the application.

Body

application/json
​
id
integer
default:1
​
jsonrpc
string
default:2.0
​
method
string
default:eth_getFilterChanges
​
params
string[]

Response

200 - application/json
Array of log objects since last poll
​
jsonrpc
string
​
id
integer
​
result
object[]