eth_getUncleByBlockHashAndIndex - BSC

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

This method returns information about an uncle block by block hash and uncle index. Note: BSC uses Proof of Staked Authority and typically does not produce uncle blocks like Ethereum PoW.

Parameters

Parameter	Type	Required	Description
blockHash	string	Yes	32-byte block hash
index	string	Yes	Uncle index (hex)

Request Example

cURL

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "eth_getUncleByBlockHashAndIndex",
    "params": ["0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd", "0x0"],
    "id": "getblock.io"
}'

JavaScript (Axios)

Python

Rust

Response Example

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

Response Parameters

Parameter	Type	Description
result	object/null	Uncle block or null (typically null on BSC)

Use Cases

• EVM compatibility testing

• Cross-chain application development

Error Handling

Error Code	Description
-32602	Invalid params
null result	No uncle at index

SDK Integration

Ethers.js

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

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

const uncle = await provider.send('eth_getUncleByBlockHashAndIndex', [
    '0x4e3a3754410177e6937ef1f84bba68ea139e8d1a2258c5f85db9f1cd715a1bdd',
    '0x0'
]);
console.log('Uncle:', uncle); // Typically null on BSC

Viem