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RE: Daily Discussion No. 5: Addressing the Paid Upvote Bot Controversy - Calling a Spade a Spade
Yeah a captcha would have to be built into the blockchain somehow. I'm not sure how possible that would be, given the blockchain, which is transparent, would have to store the correct answer to the captcha. Unless it utilises a third party.
Yup! @revo is right here in his appreciation @lucylin.
Actually, I've already commented long and hard about this same issue on other post out there from @blocktrades where I explained a few things a bit. }:)