In 2010, a certain website gave away 5 bitcoins to visitors who completed a captcha, totaling 19,700 bitcoins distributed
ChainCatcher news, according to Cointelegraph, in 2010, a certain website gave away 5 free bitcoins to each visitor who completed a simple captcha.
The website distributed a total of 19,700 BTC, worth nearly 2 billion dollars at the current exchange rate.
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