eth_newBlockFilter
method is useful for developers who must be notified of new blocks on the blockchain in real-time.
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Parameters
none
Response
result
— a hexadecimal string representing the ID of the newly created filter
Code examples
The filters created are stored on the blockchain client instance. The filter is automatically deleted if not polled within a certain time (5 minutes by default).
- eth_getFilterChanges to retrieve updates
- eth_uninstallFilter to remove the filter
eth_newPendingTransactionFilter
code examples
Note that the
web3.eth.filter
methods have been deprecated and replaced with the web3.eth.subscribe
in web3.js. See web3.js subscriptions.Use case
One way to use theeth_newPendingTransactionFilter
method is to listen for new pending transactions at predefined intervals and extract specific data from them. For instance, a decentralized application might check for pending transactions every second and identify those that transfer a value greater than a certain amount of the ETH token. This could be useful for real-time monitoring high-value transactions or detecting potential fraud or security threats.Body
application/json
Response
200 - application/json
The new filter ID.
The response is of type object
.