What is the fastest way to check balance of multiple BTC address in python

Question

I want to check multiple bitcoin addresses balance in python, can someone suggest a script that can do it fast and without getting api error.

Answer 1

You could do that by fetching an API from a Block Explorer

• Mempool.space
• BlockStream.info
• Blockchair.com

Or by adding a wallet on your Bitcoin node and fetching listunspent

without getting api error

Which API are you using?

Answer 2

you can request this API (it's free to use): https://rapidapi.com/juliakafarska/api/bitcoin-api

import requests

url = "https://bitcoin-api.p.rapidapi.com/balancesByAddress"

payload = {"addresses": ["16ftSEQ4ctQFDtVZiUBusQUjRrGhM3JYwe", "34xp4vRoCGJym3xR7yCVPFHoCNxv4Twseo"]}
headers = {
    "content-type": "application/json",
    "X-RapidAPI-Key": "YOUR_KEY_HERE",
    "X-RapidAPI-Host": "bitcoin-api.p.rapidapi.com"
}

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

print(response.text)

response:

{
  "note": "Balances for 2 wallet addresses",
  "count": 2,
  "data": [
    {
      "id": 14122055,
      "address": "16ftSEQ4ctQFDtVZiUBusQUjRrGhM3JYwe",
      "btc": 0.00525093
    },
    {
      "id": 25721113,
      "address": "34xp4vRoCGJym3xR7yCVPFHoCNxv4Twseo",
      "btc": 0.00111145
    }
  ]
}

Answer 3

Alternative using https://github.com/Blockstream/esplora/blob/master/API.md

import requests

address_list = ["bc1q7cyrfmck2ffu2ud3rn5l5a8yv6f0chkp0zpemf", "1KFHE7w8BhaENAswwryaoccDb6qcT6DbYY", "19SXCX6jvQxzfYfzRRMxjLBkqrNt6BUSJ2"]
for addr in address_list:
    print(requests.get(f"https://blockstream.info/api/address/{addr}").text)

output

{"address":"bc1q7cyrfmck2ffu2ud3rn5l5a8yv6f0chkp0zpemf","chain_stats":{"funded_txo_count":874627,"funded_txo_sum":1002983034753356,"spent_txo_count":874417,"spent_txo_sum":1002858836755824,"tx_count":844034},"mempool_stats":{"funded_txo_count":3,"funded_txo_sum":2604371991,"spent_txo_count":3,"spent_txo_sum":2650678155,"tx_count":3}}
{"address":"1KFHE7w8BhaENAswwryaoccDb6qcT6DbYY","chain_stats":{"funded_txo_count":82575,"funded_txo_sum":535871315837629,"spent_txo_count":82540,"spent_txo_sum":535843538512098,"tx_count":82340},"mempool_stats":{"funded_txo_count":0,"funded_txo_sum":0,"spent_txo_count":0,"spent_txo_sum":0,"tx_count":0}}
{"address":"19SXCX6jvQxzfYfzRRMxjLBkqrNt6BUSJ2","chain_stats":{"funded_txo_count":1,"funded_txo_sum":43915252,"spent_txo_count":0,"spent_txo_sum":0,"tx_count":1},"mempool_stats":{"funded_txo_count":0,"funded_txo_sum":0,"spent_txo_count":0,"spent_txo_sum":0,"tx_count":0}}