| http://www.w3.org/ns/prov#value | - from January 2011 through September on the website, which used Bitcoin, the tough-to-track digital currency, before it was shut down.The website, which had nearly 1 million registered users by July, let users anonymously browse through nearly 13,000 listings under such categories as cannabis, psychedelics and stimulants.It was shut down with the arrest of Ross William Ulbricht, who authorities sa
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