curl --request GET \
  --url https://api.amberdata.com/blockchains/blocks/metrics/historical \
  --header 'x-api-key: <api-key>'

import requests

url = "https://api.amberdata.com/blockchains/blocks/metrics/historical"

headers = {"x-api-key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'x-api-key': '<api-key>'}};

fetch('https://api.amberdata.com/blockchains/blocks/metrics/historical', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.amberdata.com/blockchains/blocks/metrics/historical",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "x-api-key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

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

func main() {

	url := "https://api.amberdata.com/blockchains/blocks/metrics/historical"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("x-api-key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.amberdata.com/blockchains/blocks/metrics/historical")
  .header("x-api-key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.amberdata.com/blockchains/blocks/metrics/historical")

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

request = Net::HTTP::Get.new(url)
request["x-api-key"] = '<api-key>'

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

{
  "status": 200,
  "title": "OK",
  "description": "Successful request",
  "payload": {
    "records": [
      {
        "timestamp": "2021-08-10T00:00:00.000Z",
        "difficultyAverage": "7699414348610995.0000",
        "difficultyMaximum": "7699414348610995",
        "difficultyMinimum": "7699414348610995",
        "durationAverage": "41000.000000000000",
        "durationMaximum": "41000",
        "durationMinimum": "41000",
        "hashrateAverage": 187790593868561,
        "baseFeeAverage": "30258142234.00000000",
        "baseFeeMaximum": "30258142234",
        "baseFeeMinimum": "30258142234",
        "baseFeeTotal": "30258142234",
        "burntFeeAverage": "351805579933266838",
        "burntFeeMaximum": "351805579933266838",
        "burntFeeMinimum": "351805579933266838",
        "burntFeeTotal": "351805579933266838",
        "issuanceAverage": "2000000000000000000",
        "issuanceMaximum": "2000000000000000000",
        "issuanceMinimum": "2000000000000000000",
        "issuanceTotal": "2000000000000000000",
        "issuanceUnit": "wei",
        "sizeAverage": "42380.000000000000",
        "sizeMaximum": 42380,
        "sizeMinimum": 42380,
        "sizeTotal": "42380",
        "transactionFeeAverage": "8191431157883818.0000",
        "transactionFeeMaximum": "8191431157883818",
        "transactionFeeMinimum": "8191431157883818",
        "transactionFeeTotal": "8191431157883818",
        "transactionsAverage": "93.0000000000000000",
        "transactionsMaximum": 93,
        "transactionsMinimum": 93,
        "transactionsTotal": "93"
      }
    ],
    "totalRecords": 365
  }
}

"Unauthorized"