getblockhash - Dogecoin

Example code for the getblockhash JSON-RPC method. Complete guide on how to use getblockhash JSON-RPC in GetBlock Web3 documentation.

This method returns the hash of a block at a given height in the best-block-chain.

Parameters

Parameter

Type

Required

Description

height

number

Yes

The block height (index).

Request

curl request

curl --location --request POST 'https://go.getblock.io/<ACCESS-TOKEN>/' \
--header 'Content-Type: application/json' \
--data-raw '{
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [3904788],
    "id": "getblock.io"
}'

axios example

const axios = require('axios');

const data = JSON.stringify({
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [3904788],
    "id": "getblock.io"
});

const config = {
    method: 'post',
    url: 'https://go.getblock.io/<ACCESS-TOKEN>/',
    headers: {
        'Content-Type': 'application/json'
    },
    data: data
};

axios(config)
    .then(response => console.log(JSON.stringify(response.data)))
    .catch(error => console.log(error));

python example

import requests
import json

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

payload = json.dumps({
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [3904788],
    "id": "getblock.io"
})

headers = {
    'Content-Type': 'application/json'
}

response = requests.post(url, headers=headers, data=payload)
print(response.text)

rust example

use reqwest::header;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let client = reqwest::Client::new();
    
    let response = client
        .post("https://go.getblock.io/<ACCESS-TOKEN>/")
        .header(header::CONTENT_TYPE, "application/json")
        .body(r#"{
            "jsonrpc": "2.0",
            "method": "getblockhash",
            "params": [3904788],
            "id": "getblock.io"
        }"#)
        .send()
        .await?;
    
    println!("{}", response.text().await?);
    Ok(())
}

Response

response.json

{
    "result": "24f64485ea05250ce75a73b3549afad05e078a7d8abd54e695a957dadee264fa",
    "error": null,
    "id": "getblock.io"
}

Response Parameters

Field

Type

Description

result

string

The block hash at the specified height.

error

null

Error object (null if no error).

string

Request identifier.

Use Case

The getblockhash method is essential for:

Converting block heights to hashes
Block explorer navigation
Historical data retrieval
Chain traversal operations
Synchronization checkpoints

Error Handling

Error Code

Message

Cause

-8

Block height out of range

Height exceeds current block count.

403

Forbidden

Missing or invalid ACCESS-TOKEN.

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Last updated 7 days ago

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