eth_newBlockFilter

Creates a filter in the node, to notify when a new block arrives on Avalanche C-Chain.

Parameters

This method accepts no parameters.

{
  "jsonrpc": "2.0",
  "method": "eth_newBlockFilter",
  "params": [],
  "id": 73
}

Returns

QUANTITY - A filter id.

Implementation Example

cURL

curl -X POST https://api-avalanche-mainnet-archive.n.dwellir.com/YOUR_API_KEY/ext/bc/C/rpc \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "method": "eth_newBlockFilter",
    "params": [],
    "id": 73
  }'

JavaScript

const response = await fetch('https://api-avalanche-mainnet-archive.n.dwellir.com/YOUR_API_KEY/ext/bc/C/rpc', {
  method: 'POST',
  headers: { 'Content-Type': 'application/json' },
  body: JSON.stringify({
    jsonrpc: '2.0',
    method: 'eth_newBlockFilter',
    params: [],
    id: 73
  })
});

const data = await response.json();
console.log(data.result);

Response Example

{
  "id": 73,
  "jsonrpc": "2.0",
  "result": "0x1"
}

Note: Use the returned filter ID with eth_getFilterChanges to poll for new blocks on Avalanche's fast network.

---

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