Evolution, the Dark Web’s largest underground marketplace , appears to have closed its doors abruptly on Tuesday evening. Ars was unable to access the site as of Wednesday morning.

The site’s creators, who go by the online monikers Kimble and Verto, also have apparently absconded with over $11.7 million in bitcoin. According to Wired, Verto was also the creator and administrator of Tor Carding Forum (TCF), a longstanding “private forum that charges $50 to join, has long maintained a brisk trade in stolen financial details."

Like the previous incarnations of Silk Road, Evolution (or “Evo" as it’s known to its users) requires Tor for access and offers a slew of questionable goods for sale in bitcoins. Evo itself took in between 2.5 and 4 percent of all transactions.

Evo users on reddit have located a wallet active as recently as Tuesday that currently contains more than 43,083 bitcoins—of course it’s impossible to prove with 100 percent certainty that this wallet belongs to Evo’s creators. One redditor has begun raising funds to dox Evo’s two creators.

Reddit user NSWGreat wrote on Tuesday evening:

I hate to the bearer of bad news, but I've been suspicious the past few days with withdrawals not working and admins usually are more forth coming in explaining to me why they're slow but they weren't this time. Just kept giving me time-frames I have admin access to see parts of the back end, the admins are preparing to exit scam with all the funds. Not a single withdrawal has gone through in almost a week. Automatic withdrawals has been disabled which is only doing on rare occasions I am so sorry, but Verto and Kimble have fucked us all. I have over $20,000 in escrow myself from sales. I can't fucking believe it, absolute scum. I am giving this warning to you all as soon as I possibly could of. Confronted Kimble and Verto about it, they confirmed it and they're doing it right now..

NSWGreat did not immediately respond to Ars’ request for comment.

Someone claiming to be the vendor "SterlingSilver" on Evo, who said he or she specialized in credit card details from the United Kingdom, told Ars that he or she had "approximately 15 bitcoins" (over $4,000) in escrow at the time of the shutdown.

"Evo was my first dark market—before that I used clearnet like carder.su validshop.su etc," SterlingSilver told Ars via encrypted chat.

"[I'm] pissed yes, but not due to the loss of coins. The loss of community and the loss of a well-designed dark market that was stable."

What will SterlingSilver do next?

"Back to ICQ and Jabber while clients wait for the next market," the vendor wrote. "Let's be honest it's a cost of doing business. I would find it very hard not to fuck off with $15 million give or take. [Multi-signature] escrow is gonna be what sets the next market apart, they have to get it right this time though and enforce it."

People, we have standards

Ars explored Evo in December 2014, where we found nearly 15,000 drug-related listings, including cocaine, methamphetamine, and marijuana. Other popular categories of digital goods included various hacking guides, pirated software, and even malware. A fake Colorado driver’s license was selling for just 0.257 bitcoins ($80).

There were some lines that Evo would not cross, however. Under its “Forbidden Goods" (dead Tor link, Evolution login required) page, the site stated as of December 2014:

We do not condone the sales or promotion of goods that are deemed unsuitable for the Evolution Marketplace. This includes, but is not limited to: Child Pornography

Services related to murder, assassination and/or terrorism.

Services related to sex and/or prostitution.

HYIP, Ponzi-schemes or other investment programs.

Lotteries and raffles.

Just as with its predecessors, Evolution had an active user forum that has been going since the site’s beginning in January 2014, just a few short months after the original Silk Road was seized by federal authorities. Earlier that month, Verto posted that the group had even hired someone to run public relations.

According to the Evo subreddit, a number of vendors have set up shop on other similar Tor-fueled sites.