Blockchain

How to Use This API

1. Current Bitcoin Price (Multiple Currencies)

https://blockchain.info/ticker

Returns Bitcoin price in USD, EUR, GBP, JPY, CNY, and 50+ other currencies with buy/sell prices and 15-minute delayed timestamp.

2. Bitcoin Price in USD Only

https://blockchain.info/q/24hrprice

Returns the current Bitcoin price in USD as a plain number.

3. Latest Block

https://blockchain.info/latestblock

Returns the most recent block's hash, height, time, and transaction count.

4. Transaction Stats

https://blockchain.info/q/unconfirmedcount

Returns the number of unconfirmed transactions in the mempool. Other stats: q/24hrtransactioncount, q/hashrate, q/difficulty.

5. JavaScript — Bitcoin Dashboard

async function getBitcoinStats() {
  const [ticker, latestBlock] = await Promise.all([
    fetch('https://blockchain.info/ticker').then(r => r.json()),
    fetch('https://blockchain.info/latestblock').then(r => r.json())
  ]);
  
  console.log('Bitcoin Dashboard');
  console.log('===============');
  console.log(`Price: $${ticker.USD.last.toLocaleString()}`);
  console.log(`24h Low: $${ticker.USD.low.toLocaleString()}`);
  console.log(`24h High: $${ticker.USD.high.toLocaleString()}`);
  console.log(`Latest Block: #${latestBlock.height}`);
  console.log(`Block Transactions: ${latestBlock.n_tx}`);
  console.log(`Block Size: ${(latestBlock.size / 1024).toFixed(1)} KB`);
}

getBitcoinStats();

6. Python — Price Alert Checker

import requests

def check_bitcoin_price(target_price=50000):
    ticker = requests.get('https://blockchain.info/ticker').json()
    usd_price = ticker['USD']['last']
    
    print(f"Bitcoin: ${usd_price:,.2f}")
    print(f"Change since prev close: {ticker['USD']['15m'] - ticker['USD']['last']:+.2f}")
    
    if usd_price < target_price:
        print(f"ALERT: Price below ${target_price:,.0f}!")
    elif usd_price > target_price * 1.1:
        print(f"ALERT: Price above ${target_price * 1.1:,.0f}!")
    else:
        print("Price within normal range.")

check_bitcoin_price()