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I received a screenshot of the BitcoinTalk message I had sent to minerjones which is how I had confirmed that it was the same user from here.
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did you have a screenshot of this conversation ? did you saved the image of PM received on telegram?
I think this is the most weird part also because:
$50 000: If you can access any user's PMs arbitrarily, without any interaction from the user, and without any secret data such as user passwords.
Being able to access to PMs is one of the bounty
https://bitcointalk.org/sbounties.php regarding forum security...