eth_getUncleByBlockNumberAndIndex - BSC

Example code for the eth_getUncleByBlockNumberAndIndex JSON RPC method. Сomplete guide on how to use eth_getUncleByBlockNumberAndIndex JSON RPC in GetBlock Web3 documentation.

This method gets uncle block information by block number and uncle index on BSC. BSC uses PoSA consensus and typically does not produce uncle blocks.

Parameters

Parameter

Type

Required

Description

blockNumber

string

Yes

Block number (hex) or "latest"

index

string

Yes

Uncle index (hex)

Request Example

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getUncleByBlockNumberAndIndex",
    "params": ["latest", "0x0"],
    "id": "getblock.io"
}'

const axios = require('axios');

const url = 'https://go.getblock.io/<ACCESS-TOKEN>/';

const payload = {
    jsonrpc: '2.0',
    method: 'eth_getUncleByBlockNumberAndIndex',
    params: ['latest', '0x0'],
    id: 'getblock.io'
};

axios.post(url, payload, {
    headers: { 'Content-Type': 'application/json' }
})
.then(response => console.log(response.data))
.catch(error => console.error(error));

import requests

url = "https://go.getblock.io/<ACCESS-TOKEN>/"

payload = {
    "jsonrpc": "2.0",
    "method": "eth_getUncleByBlockNumberAndIndex",
    "params": ["latest", "0x0"],
    "id": "getblock.io"
}

response = requests.post(url, headers={"Content-Type": "application/json"}, json=payload)
print(response.json())

use reqwest::Client;
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = Client::new();
    
    let payload = json!({
        "jsonrpc": "2.0",
        "method": "eth_getUncleByBlockNumberAndIndex",
        "params": ["latest", "0x0"],
        "id": "getblock.io"
    });

    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header("Content-Type", "application/json")
        .json(&payload)
        .send()
        .await?;

    let result: serde_json::Value = response.json().await?;
    println!("{:#?}", result);
    
    Ok(())
}

Response Example

{
    "jsonrpc": "2.0",
    "id": "getblock.io",
    "result": null
}

Response Parameters

Parameter

Type

Description

result

object/null

Uncle block (typically null on BSC)

Use Cases

EVM compatibility checks
Cross-chain development

Error Handling

Error Code

Description

-32602

Invalid params

SDK Integration

const { ethers } = require('ethers');

const provider = new ethers.JsonRpcProvider('https://go.getblock.io/<ACCESS-TOKEN>/');

const uncle = await provider.send('eth_getUncleByBlockNumberAndIndex', ['latest', '0x0']);
console.log('Uncle:', uncle);

import { createPublicClient, http } from 'viem';
import { bsc } from 'viem/chains';

const client = createPublicClient({
    chain: bsc,
    transport: http('https://go.getblock.io/<ACCESS-TOKEN>/')
});

// BSC does not produce uncle blocks

Previouseth_getBlockTransactionCountByNumber - BSC Nexteth_uninstallFilter - BSC

Last updated 12 days ago

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