eth_getUncleCountByBlockHash - BNB Smart Chain

Access uncle block count for a given block hash using eth_getUncleCountByBlockHash via the JSON-RPC API Interface on the BSC protocol.

The RPC method retrieves the number of uncles for a specific block by its hash on the BNB Smart Chain.

The eth_getUncleCountByBlockHash method in the BSC protocol is a JSON-RPC API call that retrieves the number of uncle blocks for a specific block identified by its hash. This method is part of the eth_getUncleCountByBlockHash Web3 interface, facilitating developers in determining the uncle count associated with a given block hash.

Utilizing the eth_getUncleCountByBlockHash RPC protocol, developers can efficiently access uncle block data, enhancing blockchain analysis and monitoring. This method requires the block hash as a parameter and returns the uncle count as a numeric value, providing essential insights into the block's structure and network activity.

Supported Networks

The eth_getUncleCountByBlockHash JSON-RPC API method supports the following network types:

• Mainnet

• Testnet

Parameters

Here is the list of parameters eth_getUncleCountByBlockHash method needs to be executed. Always format the method name as inline code (wrapped in backticks).

• Block Hash

  • Type: String

  • Description: The hash of the block whose uncle count you want to retrieve.

  • Requirement: Required

  • Default/Supported Values: A valid block hash in hexadecimal format, prefixed with "0x".

Request Example

API Endpoint

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

Request

Here’s a sample cURL request using eth_getUncleCountByBlockHash :

curl

curl --location --request POST https://go.getblock.io/<ACCESS-TOKEN>/
--header 'Content-Type: application/json' 
--data-raw {
  "jsonrpc": "2.0",
  "method": "eth_getUncleCountByBlockHash",
  "params": ["0x94c626286c237e187454ddd993adc534f0ce3468aaec134a39fbd52185cc3a5f"],
  "id": 1
}

Response

Below is a sample JSON response returned by eth_getUncleCountByBlockHash upon a successful call:

{
  "jsonrpc": "2.0",
  "id": 1,
  "result": "0x0"
}

Body Parameters

Here is the list of body parameters for the eth_getUncleCountByBlockHash method:

1. jsonrpc: The version of the JSON-RPC protocol. In this case, it is "2.0".

2. id: A unique identifier for the request, which helps in matching responses with requests. Here, it is 1.

3. result: The result of the method call. For eth_getUncleCountByBlockHash, this is the number of uncles for the block identified by its hash. In this response, the result is "0x0", indicating that there are no uncles for the specified block.

Use Cases

Here are some use-cases for eth_getUncleCountByBlockHash method:

1. Blockchain Analysis and Research: Developers and researchers can use the eth_getUncleCountByBlockHash method to analyze the frequency and distribution of uncle blocks within the Ethereum blockchain. By understanding how often uncle blocks occur, researchers can gain insights into network performance and the efficiency of block propagation.

2. Network Health Monitoring: By regularly querying the number of uncle blocks for recent blocks using eth_getUncleCountByBlockHash, network operators and developers can monitor the health of the Ethereum network. A sudden increase in uncle blocks might indicate network congestion or issues with block propagation, prompting further investigation or optimization efforts.

3. Historical Data Collection: Developers building blockchain explorers or analytics platforms can use eth_getUncleCountByBlockHash to collect historical data about uncle blocks for visualization and reporting purposes. This data can help users understand the dynamics of block inclusion and the impact of uncle blocks on overall network consensus.

Code for eth_getUncleCountByBlockHash

Python

import requests
import json
url = "https://go.getblock.io/<ACCESS-TOKEN>/"
headers = {
    "Content-Type": "application/json"
}
payload = {
  "jsonrpc": "2.0",
  "method": "eth_getUncleCountByBlockHash",
  "params": ["0x94c626286c237e187454ddd993adc534f0ce3468aaec134a39fbd52185cc3a5f"],
  "id": 1
}
response = requests.post(url, headers=headers, data=json.dumps(payload))

# Check the response and print the result
if response.status_code == 200:
    print("Result:", response.json().get("result"))
else:
    print("Error:", response.status_code, response.text)

JavaScript

const axios = require('axios');

const url = "https://go.getblock.io/<ACCESS-TOKEN>/";
const payload = {
  "jsonrpc": "2.0",
  "method": "eth_getUncleCountByBlockHash",
  "params": ["0x94c626286c237e187454ddd993adc534f0ce3468aaec134a39fbd52185cc3a5f"],
  "id": 1
};

axios.post(url, payload, {
  headers: { "Content-Type": "application/json" }
})
.then(response => {
  console.log("Result:", response.data.result);
})
.catch(error => {
  if (error.response) {
    console.error("Error:", error.response.status, error.response.data);
  } else {
    console.error("Request failed:", error.message);
  }
});

Common Errors

When using the eth_getUncleCountByBlockHash JSON-RPC API BSC method, the following issues may occur:

• Invalid block hash: If the block hash provided is incorrect or does not exist on the blockchain, the method will return an error. Ensure that the block hash is valid and correctly formatted.

• Network connectivity issues: If there are network problems or the node is unreachable, the request may fail. Verify your network connection and node status to ensure proper communication.

• Node synchronization lag: If the node is not fully synchronized with the blockchain, it may return outdated or incorrect uncle count data. Check the node's sync status and allow it to fully catch up with the network.

• Misconfigured JSON-RPC endpoint: If the JSON-RPC endpoint is incorrectly set up, the request might not reach the intended node. Confirm the endpoint configuration and ensure it's pointing to a valid BSC node.

The eth_getUncleCountByBlockHash method is valuable in Web3 applications as it allows developers to retrieve the number of uncles (or ommer blocks) associated with a specific block. This information can be crucial for analyzing block rewards and understanding network performance, thereby enhancing the application's ability to provide insights into the blockchain's operation.

Conclusion

The eth_getUncleCountByBlockHash JSON-RPC method is used to retrieve the number of uncle blocks associated with a specific block hash on blockchain networks like Ethereum and BSC (BNB Smart Chain). By providing the block hash, users can efficiently query uncle block data, which can be crucial for analyzing network performance and block validation processes. This method is essential for developers and analysts who need to understand the dynamics of block creation and the occurrence of uncle blocks in decentralized networks.