mehmeta

Hi everyone, we recently launched our cryptocurrency pricing site we have been working on for a few months:

https://chainsage.com

Currently we are aggregating data from 200+ exchanges for 2000+ assets. Being cryptocurrency enthusiasts and investors ourselves, we were frustrated with the lack of filtering/sorting options existing providers of similar data had.

For example, here's a live dashboard of assets with at least $100k in trading volume and a 10%+ USD price increase in the last 24 hours:

https://chainsage.com/100/1/?order_by=market_cap&desc=true&a...

We are also working on a paid API offering for our data. We would love to get feedback from the HN community on how we can improve, as well as features you want to see on our site. Thank you!

I'm currently in Berlin, visiting here as part of my Europe trip. I remember how much this post (http://news.ycombinator.com/item?id=3216323) came across as an excellent way of meeting with people in the startup scene, so I'm offering the same with identical terms.

Tomorrow I'll do anything for any Berlin startup that would have me. I'm an all around developer with a front-end focus, have been mostly working with JavaScript/CoffeeScript/Python/MySQL. I built the online map builder Mashupforge (http://mashupforge.com) so I'm particularly interested in online mapping.

Even if you don't have anything for me to do, I'd love to meet up for half an hour and chat about startups/Berlin over coffee/beer.

Send me an email! mehmet at mashupforge dot com

http://mashupforge.com

It's an online map builder that lets you create custom maps, place markers or shapes, use your own images as map layers. For example you can create a zoomable, draggable map of a 5000px x 12000px image, annotate it with markers and shapes.

I'm looking for feedback of any kind, about the design, the product and its potential(or lack thereof). Feel free to reach out to me at support [at] mashupforge.com.

Thanks!

I was wondering what kind of apps/businesses folks were working on that are based on the App Engine. Would be very curious to hear what your experiences are like, especially about the limitations of the platform and how you worked around them.

I built a tile cutter (http://www.piritiles.com) app that'd let you instantly create a Google Map of any image a while ago, and now working on a more comprehensive map/mashup building app that I'll be launching in a couple months.

One of the interesting (and not very clearly documented) issues I've faced was the weird 500 errors the app would generate when you have consistent request response times over a few seconds. Technically all requests need to return in 30 seconds and the occasional ~10s response was okay, but for background processing intensive apps like Piritiles, using TaskQueue API (which was just coming out of beta at the time) was essential.

It still is rough around the edges and has a number of issues but I'd love some feedback on my weekend project, Piritiles (http://www.piritiles.com). It's an AppEngine(Python) app that can generate a draggable, zoomable Google Map out of any image (much like Maplib). Thank you!