The getblockhash RPC method in CoinAPI allows you to retrieve the hash of a block using its height. This method is essential for developers and blockchain enthusiasts who want to query specific blo...

getblockhash

Overview

The 'getblockhash' RPC method in CoinAPI allows you to retrieve the hash of a block using its height. This method is essential for developers and blockchain enthusiasts who want to query specific block details in the Bitcoin blockchain.

Request

shell

wget --no-check-certificate --quiet \
  --method POST \
  --timeout=0 \
  --header 'Content-Type: application/json' \
  --header 'accept: application/json' \
  --header 'X-CoinAPI-Key: 4303fb63-adec-42dc-b571-74bc2f2a5167' \
  --body-data '{"jsonrpc":"2.0","id":1,"method":"getblockhash","params": [ ]}' \
   'https://bitcoin-mainnet.node.coinapi.io'

csharp

var client = new HttpClient();
var request = new HttpRequestMessage(HttpMethod.Post, "https://bitcoin-mainnet.node.coinapi.io");
request.Headers.Add("x-coinapi-key", "73034021-THIS-IS-SAMPLE-KEY");
request.Headers.Add("accept", "application/json");
var content = new StringContent("{\"jsonrpc\":\"2.0\",\"method\":\"getblockhash\",\"params\": [],\"id\":1}", null, "application/json");
request.Content = content;
var response = await client.SendAsync(request);
response.EnsureSuccessStatusCode();
Console.WriteLine(await response.Content.ReadAsStringAsync());

php

<?php
$client = new Client();
$headers = [
  'x-coinapi-key' => '73034021-THIS-IS-SAMPLE-KEY',
  'Content-Type' => 'application/json',
  'accept' => 'application/json'
];
$body = '{
  "jsonrpc": "2.0",
  "method": "getblockhash",
  "params": [],
  "id": 1
}';
$request = new Request('POST', 'https://bitcoin-mainnet.node.coinapi.io', $headers, $body);
$res = $client->sendAsync($request)->wait();
echo $res->getBody();
?>

python

import requests
import json

url = "https://bitcoin-mainnet.node.coinapi.io"

payload = json.dumps({
  "jsonrpc": "2.0",
  "method": "getblockhash",
  "params": [],
  "id": 1
})
headers = {
  'x-coinapi-key': '73034021-THIS-IS-SAMPLE-KEY',
  'Content-Type': 'application/json',
  'accept': 'application/json'
}

response = requests.request("POST", url, headers=headers, data=payload)

print(response.text)

javascript

var settings = {
  "url": "https://bitcoin-mainnet.node.coinapi.io",
  "method": "POST",
  "timeout": 0,
  "headers": {
    "x-coinapi-key": "4303fb63-adec-42dc-b571-74bc2f2a5167",
    "Content-Type": "application/json",
    "accept": "application/json"
  },
  "data": JSON.stringify({
    "jsonrpc": "2.0",
    "method": "getblockhash",
    "params": [],
    "id": 1
  }),
};

$.ajax(settings).done(function (response) {
  console.log(response);
});

go

package main

import (
  "fmt"
  "strings"
  "net/http"
  "io/ioutil"
)

func main() {

  url := "https://bitcoin-mainnet.node.coinapi.io"
  method := "POST"

  payload := strings.NewReader(`{"jsonrpc":"2.0","method":"getblockhash","params": [],"id":1}`)

  client := &http.Client {
  }
  req, err := http.NewRequest(method, url, payload)

  if err != nil {
    fmt.Println(err)
    return
  }
  req.Header.Add("x-coinapi-key", "73034021-THIS-IS-SAMPLE-KEY")
  req.Header.Add("Content-Type", "application/json")
  req.Header.Add("accept", "application/json")

  res, err := client.Do(req)
  if err != nil {
    fmt.Println(err)
    return
  }
  defer res.Body.Close()

  body, err := ioutil.ReadAll(res.Body)
  if err != nil {
    fmt.Println(err)
    return
  }
  fmt.Println(string(body))
}

ruby

require "uri"
require "json"
require "net/http"

url = URI("https://bitcoin-mainnet.node.coinapi.io")

https = Net::HTTP.new(url.host, url.port)
https.use_ssl = true

request = Net::HTTP::Post.new(url)
request["x-coinapi-key"] = "73034021-THIS-IS-SAMPLE-KEY"
request["Content-Type"] = "application/json"
request["accept"] = "application/json"
request.body = JSON.dump({
  "jsonrpc": "2.0",
  "method": "getblockhash",
  "params": [],
  "id": 1
})

response = https.request(request)
puts response.read_body

java

OkHttpClient client = new OkHttpClient().newBuilder().build();
MediaType mediaType = MediaType.parse("application/json");
RequestBody body = RequestBody.create(mediaType, "{\r\n  \"jsonrpc\": \"2.0\",\r\n  \"id\": \"1\",\r\n  \"method\": \"getblockhash\",\r\n  \"params\": []\r\n}\r\n");
Request request = new Request.Builder()
  .url("https://bitcoin-mainnet.node.coinapi.io")
  .method("POST", body)
  .addHeader("Content-Type", "application/json")
  .addHeader("accept", "application/json")
  .addHeader("X-CoinAPI-Key", "73034021-THIS-IS-SAMPLE-KEY")
  .build();
Response response = client.newCall(request).execute();

Request Parameters

Type: Numeric
Required: Yes
Description: The height index of the block in the blockchain. It represents the position of the block in the blockchain, starting from 0, which is the genesis block.

Response

{
  "status": "success",
  "data": {
    "result": "00000000000000000007f8a09c4c7d0e6c4c76e3d60e1b3fe9e0a3d1a1a2bce9"
  }
}

result

Type: String
Description: This field will return the hash of the block corresponding to the specified height. The hash is a unique identifier for the block and can be used to retrieve further details about the block.

Notes

Ensure that you have sufficient API credits before making a request.
The API response time may vary depending on the network conditions.

Service Status GitHub SDK

getblockhash

On this page