How to get a bitcoin address's balance?

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I know blockchain.info has an API: https://blockchain.info/q/addressbalance/134dV6U7gQ6wCFbfHUz2CMh6Dth72oGpgH gets the bitcoin address's balance,but it's not open source and must connect to the Internet.

And I find the open source website blockexplorer.com has not show the right balance: http://blockexplorer.com/testnet/address/134dV6U7gQ6wCFbfHUz2CMh6Dth72oGpgH It gets 0 but not 1250000 from blockchain.info.

I tried bitcoin-qt client debug console: getbalance 134dV6U7gQ6wCFbfHUz2CMh6Dth72oGpgH But it returns 0 whenever the address is not mine.

How can I get someone else's bitcoin address's balance? The bitcoin database is big and hard to check every transaction to get the balance.

Is there any source code or API easy to use?

Gank

Posted 2013-12-19T13:11:46.893

Reputation: 265

1Did you found any method to get else's bitcoin address' balance ? – coding_idiot – 2014-02-25T06:04:37.557

Why does it need to be open source? You'll need to connect to the Internet anyway. – stommestack – 2014-04-30T18:59:49.133

@coding_idiot Not yet. ABE has the function, but I failed to use it. It's too big the database. – Gank – 2014-06-24T11:20:16.653

@JopVernooij The website will block my IP, if I quest too much query. :) – Gank – 2014-06-24T11:21:06.480

Without internet, you won't be able to get the actual balance. Either you connect to some site or online API, or you use a local Bitcoin client but that will still need internet to get the current data from the Bitcoin p2p network. – Madzi Konjo – 2014-11-10T10:33:10.127

Answers

4

blockexplorer.com does show the right balance. However, you are looking up in the Testnet blockchain.

The right request is the following: http://blockexplorer.com/address/134dV6U7gQ6wCFbfHUz2CMh6Dth72oGpgH

If you open that link, you will see that it shows the right balance.

As you have mentioned, blockexplorer.com is open source, so you probably want to look at the source code to find out how the mechanism you are interested in works.

rrrrrrrrrrrrrrrr

Posted 2013-12-19T13:11:46.893

Reputation: 474

Thanks!It works.But it is still difficult to find the getbalance code from blockexplorer.com written in python.Is there an easier way to getbalance locally not by Internet?Just from the bitcoin-qt client?Or any other lib for cpp? – Gank – 2013-12-19T15:28:17.680

1bitcoin-qt, as far as I know, doesn't have an API call for this. – rrrrrrrrrrrrrrrr – 2013-12-20T18:18:15.197

1where does blockexplorer.com get the information about balances? – アレックス – 2014-09-10T09:34:58.993

Asked: 2013-12-19T13:11:46.893

Viewed: 8 780 times

Active: 2014-11-10T08:51:52.437