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POST
/
95e61622bf6a8af293978377718e3b77
/
jsonrpc
eth_getFilterChanges
curl --request POST \
  --url https://tron-mainnet.core.chainstack.com/95e61622bf6a8af293978377718e3b77/jsonrpc \
  --header 'Content-Type: application/json' \
  --data '
{
  "jsonrpc": "2.0",
  "method": "eth_getFilterChanges",
  "id": 71,
  "params": [
    "0xc11a84d5e906ecb9f5c1eb65ee940b154ad37dce8f5ac29c80764508b901d996"
  ]
}
'
{
  "jsonrpc": "<string>",
  "id": 123,
  "result": [
    "<unknown>"
  ]
}
TRON API method that polls for changes on a previously created filter and returns new logs or block hashes, providing an Ethereum-compatible interface for monitoring TRON blockchain data.
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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 parameters
    • filterId — 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 request
  • result — array of log objects (for log filters) or block hashes (for block filters)

​
Use case

The jsonrpc 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
​
jsonrpc
string
default:2.0
required
​
method
string
default:eth_getFilterChanges
required
​
id
integer
default:71
required
​
params
string[]
required

The filter ID returned by eth_newFilter or eth_newBlockFilter

Response

200 - application/json

Array of log objects or block hashes since last poll

​
jsonrpc
string
​
id
integer
​
result
any[]

Array of log objects (for log filters) or block hashes (for block filters)

Last modified on April 15, 2026