eth_newBlockFilter

Creates a filter in the node, to notify when a new block arrives on the Chiliz network.

Parameters

None (this method takes no parameters)

Returns

Returns a filter ID as a hexadecimal string. This ID can be used with eth_getFilterChanges to retrieve new block hashes since the last poll.

Implementation Example

Examples

cURL

curl -X POST https://api-chiliz-mainnet-archive.n.dwellir.com/YOUR_API_KEY \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_newBlockFilter",
    "params": [],
    "id": 1
  }'

JavaScript

const response = await fetch('https://api-chiliz-mainnet-archive.n.dwellir.com/YOUR_API_KEY', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_newBlockFilter',
    params: [],
    id: 1
  })
});

const data = await response.json();
console.log('Filter ID:', data.result);

Python

import requests
import json

url = 'https://api-chiliz-mainnet-archive.n.dwellir.com/YOUR_API_KEY'
headers = {'Content-Type': 'application/json'}
payload = {
    "jsonrpc": "2.0",
    "method": "eth_newBlockFilter",
    "params": [],
    "id": 1
}

response = requests.post(url, headers=headers, data=json.dumps(payload))
data = response.json()
print('Filter ID:', data['result'])

Response Example

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x16"
}

Notes

• The returned filter ID is used with eth_getFilterChanges to poll for new blocks
• Filters automatically expire after a period of inactivity (typically 5 minutes)
• Use eth_uninstallFilter to manually remove the filter when no longer needed
• Each call to eth_getFilterChanges returns only block hashes added since the last poll

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Need help? Contact our support team or check the Chiliz documentation.