If they're still using the source code from 2010 when it was a completely different business with a completely different name with a completely different purpose owned by a completely different person, according to the Wikipedia link you posted.

You're pretending this was just a domain name sale; that's not what the public story is, the story is that it was re-purposed by the original owner who then sold it to the current owners so there's every reason to believe it's based on the original code.

Well, every reason except that the site for trading Magic The Gathering Online cards never went live.

And that trading currencies is a completely different task than trading cards.

That it never went live is not relevant, it doesn't mean code wasn't written or re-used. So he pivoted before going live, so what?

In this fantasy is the surviving code supposed to be mission critical stuff that magically applied to the completely different second business and survived the years and growth since 2011?

Well, I have a hobby project for trading X, then I decide I want to have a project for trading Y; isn't this an obvious instinct to modify the one I'm already working on to fit a new purpose, instead of starting for scratch? If the author didn't know much about complexities of money trade, I'm pretty sure he did just that.

I've seen people retrofitting their CMSes to do everything. Hell, I even did this myself with my hobby game engine. It's common for programmers.

Thank you for some common fucking sense; that's exactly what programmers do and exactly what would have happened. Gox most certainly has code originally built for a card game.

> In this fantasy

Fuck off then.

Numerous people have posted information with sources that directly conflicts with most of your opinions, while you ride on this apparent "4+ years ago some dude maybe reused some source" for whatever that's even supposed to mean.

MtGox has more traffic than HN, survived immense press and growth over the last couple years as bitcoin rose into mainstream popularity, and did so as a market leader for most of that time. That alone should tell you very little if any source remains, it's not like that dude's beta that apparently never even launched was likely to just scale through several orders of magnitude more traffic and solve every problem and new or different need along the way.

Fantasy sounds like exactly the right term. Unless you have any proof. Do you?

> And that trading currencies is a completely different task than trading cards.

Right -- you can use Magic cards to play a fun game, as well as to try to make speculative bets. Bitcoins are that, minus the fun.