Good news regarding a better Coinmarketcap integration: I have found a way how to extract the "circulating supply" from http://slimcoin.club - that is the number that is missing to calculate the correct market cap. There are some hidden URLs that can be spotted if you open the javascript files included in the home page (view source code for that). There seems to be a complete Slimcoin JavaScript frontend there and even a DCrypt "port".

I hope @a123 (creator of slimcoin.club) is not annoyed if I grab the total supply every 5 minutes to provide it to Coinmarketcap (the server load should be minimal). I don't know if he released that Javascript files somewhere or if it's only a "private" implementation for his web site - @a123, if you are reading here, it would be cool if you could open source it ...

I have written a little Python script that collects this number, I could extend and publish it to provide it to CMC in a more accesible way. However, it's so easy to grab that perhaps they can grab it by themselves - I've sent them the link and the method to grab the number. They say they need "up to 7 days" to add/change information, so if in ~2-3 weeks the figures are still not correct, I'll provide them a web service.

@dzarmush: I guess the 502 errors are simply a bug/problem on bchain.info. Yesterday I consulted them several times and they had some load problems.