"Bitcoin & Co: a question of faith?" This was the title of a lecture given by Prof. Dr. Christian Locher, Professor of Digital Business at THI Business School, at "otto", a "creative space" and co-working space in Neuburg an der Donau. Together with Hansjürgen Geier from Sparkasse Neuburg-Rain, he spoke about blockchain technology and the value and price of cryptocurrencies in the roughly two-hour lecture. Locher also discussed why bitcoin mining requires so much energy. Afterwards, the two speakers discussed with the audience scenarios of what developments cryptocurrencies could take in the future - for example, whether they could be banned altogether or become the sole means of payment.