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Parameters
jsonrpc
— the JSON-RPC protocol version (always “2.0”)method
— the method name (always “eth_getFilterChanges”)params
— array containing method parametersfilterId
— the filter ID returned by eth_newFilter or eth_newBlockFilter
id
— request identifier (number or string)
Response
jsonrpc
— the JSON-RPC protocol version (“2.0”)id
— the request identifier that matches the requestresult
— array of log objects (for log filters) or block hashes (for block filters)
Use case
Thejsonrpc eth_getFilterChanges
method is used for:
- Polling for new logs or blocks that match previously created filter criteria
- Building efficient event monitoring systems that check for updates periodically
- Implementing real-time dApp functionality through Web3 interfaces without constant re-filtering
- Creating blockchain monitoring applications that track specific events or block production
Body
application/json