Why Blockchain is Hard

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The hype around blockchain is massive. To hear the blockchain hype train tell it, blockchain will now:

  1. Solve income inequality
  2. Make all data secure forever
  3. Make everything much more efficient and trustless
  4. Save dying babies

What the heck is a blockchain, anyway? And can it really do all these things? Can blockchain bring something amazing to industries as diverse as health care, finance, supply chain management and music rights?

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