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The increasing number of blockchain patent filings in recent years shows a maturing and steadily growing industry; however, widespread adoption still faces considerable hurdles. The future of the blockchain landscape is likely a cornucopia of blockchains often tailor-made to solve particular problems in particular industries. All of these blockchains face, or will face, problems related to usability, interoperability, scalability, and privacy. Until solutions to these problems are developed, widespread adoption will be hampered.