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Questions tagged [api]

This tag should be used for questions related to APIs offered by any Bitcoin related service. An API is an Application Programming Interface and services often have APIs available for developers to write software which accesses information offered by the service.

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2
votes
0answers
1k views

bitcoind 400 bad request - what's wrong with this code?

As per this code sample, I'm attempting to make a .net httpwebrequest from my local machine to a local bitcoind -daemon server. However, I'm only receiving a 400 bad request at webRequest.GetResponse()...
6
votes
2answers
473 views

Is there a Trading API that spans multiple independent sites, preferably from open source websites?

To experiment a little with automatic trading I'm looking for a trading api (like mtgox has) which is used on multiple independent websites so that if one goes under that I then don't have to redo my ...
-1
votes
1answer
688 views

Bitcoin Transaction Scripts

Could someone explain to me how the bitcoin transaction scripts work?How to build custom scripts? Also please explain the data structure of transactions as specified by the bitcoin protocol? How to ...
3
votes
1answer
214 views

What is the easiest way to “listen” to the network?

If I want to automatically check up on payments and ensure they are not double spends and check the confirmation count, what is the easiest way to do so?
4
votes
1answer
394 views

What server-side Bitcoin clients are available to serve information?

I have been toying around with the idea of building a bitcoin app. My research has thus far led me to conclude that it makes sense to run a bitcoin client daemon on my server in order to provide an ...
2
votes
1answer
450 views

In ListReceivedByAddress, what is the meaning of Confirmations if the address is reused?

The API ListReceivedByAddress allows me to view a list a sum* of all the transactions that an address has received. This returns an array listing the sum of what was sent. If the address is reused ...
9
votes
1answer
588 views

Importprivkey's “label” - is it the same as an account?

The "importprivkey" API call allows one to import a private key and save it with a label. Is the "label" in the API call synonymous with an account used in the wallet?
8
votes
1answer
439 views

Is there an API for price estimation?

I need to display at my website what a certain amount of Bitcoins will likely cost. I can fetch the latest price using the MtGox API and multiply it by the amount, but for large amounts this is ...
6
votes
1answer
303 views

Alternative clients and the Bitcoin API

Which of the alternative clients support any/some/all of the standard API calls? I am looking for a possible alternative client to replace Bitcoind on my server.
3
votes
1answer
2k views

Blockchain.info Receive Payments API problem

I am building a little online app to accept bitcoin payments in my website. I have a blockchain.info wallet and I am following their Receive Payments Api, which can be visited here: http://blockchain....
4
votes
1answer
1k views

How to return Bitcoins to sender through Bitcoin API?

I want to get information about the creator of a given transaction through Bitcoin API. More specifically, any or all addresses they sent their Bitcoins from, so I can return some of the money back. ...
5
votes
1answer
3k views

Monitor all transactions on bitcoin network - API

I am searching for a solution to monitor all bitcoin transactions (or for first ties at least for addresses inside my bitcoin client). I found http://blockchain.info/api_websocket is this really ...
4
votes
1answer
307 views

How to force bitcoind to include a specific transaction as an input of another transaction?

I would want to force bitcoind to include a specific transaction as an input of another transaction. This is so as to prevent people front wanting to launch a double-spend attack on the website. The ...
3
votes
1answer
636 views

Using the Bitcoin API, how can I see the sending address?

https://en.bitcoin.it/wiki/Original_Bitcoin_client/API_Calls_list I have a transaction and I want to see what addresses the inputs came from. How can I do that?
4
votes
1answer
774 views

Will calling “walletpassphrase” twice in a short amount of time increase the time the wallet stays unlocked?

The Bitcoin API call for walletpassphrase allows one to open the wallet for a set amount of time. If one calls it again while the wallet is still unlocked, we get an error of 'Error: Wallet is already ...
3
votes
1answer
376 views

Bitcoind statistics

I need to get some values to find how updated my bitcoind client is. For example, I would like the GUI to tell me: If it is up to date. If not, show blocks/total blocks How many blocks have been ...
3
votes
3answers
1k views

Automating service with income from VISA and expenses in Bitcoins

Open-org.com is building an online service, which will have income coming from VISA cards, and will pay expenses in Bitcoins. We expect to make something like 100 transactions per day from credit ...
1
vote
2answers
136 views

Proper getmemorypool data endianness?

As there are a couple endiannesses used by Bitcoin, what is the proper way to encode the data parameter for a getmemorypool JSON API call?
4
votes
1answer
206 views

API calls - “not yet implemented”?

I tried sending some commands to my Bitcoin-QT running on Mac, and when I called "encryptwallet", I got this response: Not Yet Implemented: use GUI to encrypt wallet, not RPC command What API calls ...

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