<p>At London's Blockchain Expo, 16,000 people exhibited, networked or just gawped at stands promoting businesses that were too complicated or obscure to get their heads round. In this podcast Charles Miller tries to make sense of it all with the help of Osmin Callis from nChain, Richard Kastelein from Blockchain News and Sergio Rigert from Gingr - a Swiss startup that's putting prostitution on the blockchain.  </p>

At London's Blockchain Expo, 16,000 people exhibited, networked or just gawped at stands promoting businesses that were too complicated or obscure to get their heads round. In this podcast Charles Miller tries to make sense of it all with the help of Osmin Callis from nChain, Richard Kastelein from Blockchain News and Sergio Rigert from Gingr - a Swiss startup that's putting prostitution on the blockchain.

<p>At London's Blockchain Expo, 16,000 people exhibited, networked or just gawped at stands promoting businesses that were too complicated or obscure to get their heads round. In this podcast Charles Miller tries to make sense of it all with the help of Osmin Callis from nChain, Richard Kastelein from Blockchain News and Sergio Rigert from Gingr - a Swiss startup that's putting prostitution on the blockchain.&nbsp;&nbsp;</p>

What can't you do on blockchain?

CoinGeek Conversations is a weekly podcast update on the thriving BitcoinSV ecosystem - for beginners as well as those already deeply immersed in it. CoinGeek's Charles Miller meets entrepreneurs, technologists and businesspeople to ask about their work and their visions for the future. You don't need to be an expert in computer science or business studies. But you do need an appetite to learn about the most exciting new technology of our time.

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What can't you do on blockchain?

What can't you do on blockchain?