When you say profitable, what exactly do you mean?

I ask that because if you plan to only lend USD, I don't see many ways in which you lose money in this investment (except for credit risk and failure to repay the loan by the exchange). On top of that, lending rates are higher than a lot of other fixed-rate investments in USD.

So as long as you're comfortable with the credit risk, I believe it is still worth it.

Awesome project, I was looking exactly for this! Thanks a lot for creating it!

I have no experience with php, nor setting up a server for this purpose. Can someone give me a quick help installing marginbot?
I saw some people mentioning 000webhost.com. I tried it but got stuck, couldn't figure out how to upload files and setup what I needed (kept getting an ftp error). If you have other suggestions of low-cost web servers to host it, I'm also up for it.

Best,
Andre

Hi,

Currently I'm using HTTP queries to get market data from Bitcoin exchanges and it's a pain because the requests take too long to execute sometimes.

Apparently, we can get real time data using the Websocket protocol. I recently came across this on Bitstamp's website: https://www.bitstamp.net/websocket/. I've also seen OKCoin using the same protocol: https://www.okcoin.com/about/ws_getStarted.do

I would like to use that in Excel using VBA. Do you guys think that's possible? These websites have examples of code in Java...maybe running JavaScripts from VBA would do the trick?

Thanks!
Andre

Take a look here, it will certainly help you out: http://www.mrexcel.com/forum/excel-questions/753144-visual-basic-applications-post-hashing-problem-btc-e.html

pra quem quiser ler mais sobre:
http://www.coindesk.com/major-security-flaw-heartbleed-puts-critical-services-risk/

which programming language are you using? VBA?

I tested the nonce...the generator is fine, it matches the values I get in python.

The most bizarre thing is that the code always returned "Invalid Sign". Then, suddenly, it worked twice and returned my account balances. But after that, never more, only the "Invalid Sign"...

We're not sending any amount, we're using the getInfo function, there are no variables to send.

The things that bothers me the most is that I compared the execution step-by-step with a python code that I have (which works). All the data, from signature to data posted are exactly the same! But in the VBA one I always get the same error of wrong signature. I tried other APIs as well (Bitfinex and MercadoBitcoin) both of them returned the same Invalid Signature. But again, all the values and signatures calculated matched what I had in python.

So my guess is, the way VBA send the POST via WinHttpRequest probably is screwing something up...

I just got in the same situation as you rijnsent: most of the time the code doesn't work and give back the message "invalid sign". But out-of-the-blue, it works for 1 to 2 times and then it gets back to returning errors.

I really have no idea on how to solve this...

Your last post was in Jan...have you solved it since then?
Anybody got ideas?

Thanks!