Blockchain.com Data API

blockchain.info · Finance

Finance No Auth Free & Open Cryptocurrency Bitcoin Blockchain

Bitcoin blockchain data — transaction info, block details, wallet balances, exchange rates, and unspent outputs. Free, no API key for most endpoints.

Authentication

No authentication requiredFree to use with no key needed.

Sample Requests

GET Get BTC/USD rate

Get Bitcoin exchange rates in all major currencies.

https://blockchain.info/ticker

Hover any highlighted part to learn what it does

curl -X GET "https://blockchain.info/ticker"

import requests
response = requests.get(
    "https://blockchain.info/ticker",
)
print(response.json())

const url = 'https://blockchain.info/ticker';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://blockchain.info/ticker"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://blockchain.info/ticker")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://blockchain.info/ticker";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

GET Get wallet balance

Get the satoshi balance of the Bitcoin genesis block address.

https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf

Hover any highlighted part to learn what it does

curl -X GET "https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf"

import requests
response = requests.get(
    "https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf",
)
print(response.json())

const url = 'https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf';

const response = await fetch(url); 
const data = await response.json();
console.log(data);

package main

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

func main() {
	targetURL := "https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf"
	req, _ := http.NewRequest("GET", targetURL, nil)

	client := &http.Client{}
	resp, _ := client.Do(req)
	defer resp.Body.Close()
	body, _ := io.ReadAll(resp.Body)
	fmt.Println(string(body))
}

require "net/http"
require "json"

uri = URI("https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf")

http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = uri.scheme == "https"

req = Net::HTTP::Get.new(uri)

res = http.request(req)
puts JSON.parse(res.body)

<?php
$url = "https://blockchain.info/q/addressbalance/1A1zP1eP5QGefi2DMPTfTL5SLmv7Divf";
$opts = ["http" => [
    "method" => "GET",
]];
$ctx = stream_context_create($opts);
$res = file_get_contents($url, false, $ctx);
print_r(json_decode($res, true));

Postman Setup Guide

Get Postman ↗

No API key needed
BTC price: GET https://blockchain.info/ticker
Address balance (satoshis): GET https://blockchain.info/q/addressbalance/{address}
Latest block: GET https://blockchain.info/latestblock
Transaction: GET https://blockchain.info/rawtx/{txhash}

Open documentation ↗