I had seen the listing on TheRealDeal, but not having time to try to verify its authenticity, skipped it. Thankfully, Waqas of HackRead investigated and verified some of the data:
On 31st August 2016, unknown hackers leaked 68 million Dropbox user accounts including login emails and encrypted passwords from a breach that took place in 2012. Initially, the leaked data was accessible to several breach notification sites such as Hacked-DB, LeakedSource, and HaveIbeenPwned, but now a vendor going by the online handle of “DoubleFlag” is selling the same DropBox data on a dark web marketplace known as TheRealDeal.
Read more about what he found on HackRead.
Update: The same vendor (“doubleflag”) has listed the BitcoinTalk.org forum database for sale in the same marketplace. The description of the listing:
sha256crypt (469,540) & SMF (44,868)
Data of database
leak date 2015-05
DataBreaches.net has made no attempt to try to verify the authenticity of the data, but I imagine someone else will. 🙂
Update 2: See HackRead’s coverage of the BitcoinTalk database listing.