Blockchain - the technology behind Bitcoin and Ethereum - is flourishing into an impressive spectrum of research projects and initiatives, corporate alliances, and startup companies. This multidisciplinary effort spans diverse disciplines ranging from Computer Science and Engineering to Communications, Social Sciences, Public Policy, Banking and Finance, Journalism, and Political Sciences to name a few. This one day event strives to bring researchers and practitioners of blockchain together to share and exchange results. We are interested in papers and presentations on a broad range of topics including:

• Application use cases of blockchain
• Secure smart contracts
• Blockchain for social networking
• Distributed systems for blockchain
• Blockchain consensus protocols
• Governance and blockchain
• Partitioned and replicated data stores for blockchain
• Transactions and blockchain
• Software engineering practices and life cycle management of blockchain
• Social aspects of blockchain
• Game theory and its applications to blockchain
• Blockchain protocol analysis and security
• Algorithm design, complexity analysis, implementation for blockchain
• Experience papers with blockchain