Your transaction is on the blockchain.
https://explorer.siahub.info/hash/1a79a16a97247032b93643d5c35ade135b7941c9710120f9cdfbe959740133dc

Should appear in your Bittrex account. If not, please contact their support.

@torreslabs
I'm not sure if I imagine your intentions right. So here are just some thoughts.

I did not figure out how to "connect" the UI part of Sia-UI to other than local node. I just hadn't enough time to experiment. From what I've seen, it should be possible. It would be difficult to separate the files by users. Every user could see all the uploaded files. I haven't tried it yet, but the description of Sia integration with nextcloud looks promising (Nextcloud as UI for Sia). As you will be operating one wallet, you'll have difficulties to track and divide the spent SC between the users...

What would be the issue with doing big (100mb +) files? Would be nice to have some ballpark figure of maximum size that would be no problem to upload without any significant delays.

Dropping 32bit support was recent, apologies for the confusing. v1.0 will be shipping without 32bit executables.

I think the best part for Sia is that Sia is a marketplace for people buy and sell storage capacity. In this marketplace, There are incentives for people to store files.

IPFS seems just technology and it is not a marketplace. To build a marketplace, it still needs to solve how to incentivize people to store the files.

I would very much like to hear your latest news about this topic

Thanks @ffmad for setting up the forum, and then for sticking around to keep it updated. We definitely appreciate it.