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I have an arbitrary address. How can I get the current balance of the account through a Web API? ... how do I get it for a local API?

I'm also interested in all transaction history for that address. Let me know if the API can offer that as well.

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  • Anyone with a local API solution to the same question?
    – qdot
    Jan 12, 2014 at 9:16

1 Answer 1

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You can query the unspent outputs of an address with this:

 http://blockchain.info/unspent?active=$bitcoin_address

You can get the transaction history for an address with this:

 http://blockchain.info/address/$bitcoin_address?format=json

For more information see http://blockchain.info/api/blockchain_api

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  • Nice, ?format=json is useful!
    – q9f
    Jan 8, 2014 at 20:26

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