Re: www.BITSTAMP.net Bitcoin exchange site for USD/BTC

first of all. good job getting the site backup and running (didn't realize that Nejc Kodric runs Bitstamp)

i've noticed an issues with the Transactions API call (https://www.bitstamp.net/api/transactions/?time=hour)
sometimes a call returns transactions that are older than those in a previous call.

today with this call, i first received:
[{"date": "1420896736", "tid": 7102104, "price": "274.11", "amount": "2.00000000"}, ...]

and in a next call, i received:
[{"date": "1420896324", "tid": 7101926, "price": "276.06", "amount": "4.49916597"}, ...]

i left out irrelevant parts of the lists (with "...").
but clearly date 1420896324 is supposed to come before 1420896736

(i'm not sure whether this is the right place to report this issue)

There seems to be some real issues with transactions at the moment. We are seeing subsequent pulls give us different versions of history. For example, I pull the history once and get a large set of trades, then I pull again and I'm missing just two trades from somewhere in the middle of the set. A third pull and the trades are back again. I'm opening a ticket but I think Bitstamp should look at this ASAP.

Actually, this might be my mistake. Will update here as soon as I know.

Yeah, this was a mistake in our code. From what I can tell, bitstamp transaction data is OK, though there have been a few subtle changes in the ordering of records returned.

it hasn't happened again since i posted here. but i'm pretty sure it's not a problem in my code. because when it happens, i log the data that i already have and the data returned from the API call. and it's really easy to see that the data i already have is newer (which should never be the case).

i also noticed an issue of missing trades between the list of trades for the last hour and the list for the last minute. here the hour list lags behind the minute list. and at times a trade is no longer in the minute list but also not in the hour list yet. so i just use the hour list now. so i use a little more bandwidth (but i consider this a minor issue).

I would advice to built a additional data integrity validation layer when operating on bitstamp historical trades API. Since October 2013 bitstamp does not allow to keep data integrity due to removed `since` / `offset` param from trades API method. Be aware that sourcing bitstamp trades data from external sites like bitcoincharts.com might be also affected by lack of data integrity feature on bitstamp.