The popularity of blockchain technology continues to grow rapidly in both industrial and academic fields. Most studies of blockchain focus on the improvements of security, usability, or efficiency of blockchain protocols, or the applications of blockchain in finance, Internet of Things, or public services. However, few of them could reveal the concerns of front-line developers and the situations of blockchain in practice. In this article, we investigate how developers use and discuss blockchain with a case study of Stack Overflow posts. We find blockchain is a relatively new topic in Stack Overflow but it is rising to popularity. We detect 13 types of questions that developers post in Stack Overflow and identify 45 blockchain relevant entities (e.g., frameworks, libraries, or tools) for building blockchain applications. These findings may help blockchain project communities to know where to improve and help novices to know where to start.

中文翻译：

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开发者眼中的区块链

区块链技术在工业和学术领域的普及继续快速增长。大多数区块链研究集中在区块链协议的安全性、可用性或效率的改进，或区块链在金融、物联网或公共服务中的应用。然而，很少有人能够揭示一线开发人员的担忧以及区块链在实践中的情况。在本文中，我们通过 Stack Overflow 帖子的案例研究来调查开发人员如何使用和讨论区块链。我们发现区块链是 Stack Overflow 中一个相对较新的话题，但它正在流行。我们检测了开发人员在 Stack Overflow 上发布的 13 类问题，并确定了 45 个区块链相关实体（例如，框架、库或工具）以构建区块链应用程序。