Sharing government data is of great significance to social development, but insecure and inappropriate sharing may lead to privacy breaches. Data sharing in consortium blockchain has provided a promising direction for efficient privacy preserving government data sharing. However, since government data is not owned by a single person or any government employers, it is hard to attribute participants’ responsibility for motivating data sharing behavior in blockchain systems. Furthermore, the scope and scale of government data to be shared among departments is unclear, as the purposes for retrieving shared data are dynamically changing. In order to solve these problems, we propose a Service-On-Chain (or simply, SOC) approach. The SOC approach can effectively identify different departments’ data retrieving requirements while efficiently sharing government data with trustworthiness in data content and controllability in data ownership. In particular, we utilize smart contracts to provide an onchain service to define data sharing agreements between government departments, which can identify ambiguous data retrieving requirements and formalize the process logic. We apply the SOC approach to a real world scenario and demonstrate that the SOC approach provides a feasible solution for secure and efficient sharing of data among government departments.

共享政府数据对社会发展具有重要意义，但不安全和不适当的共享可能会导致隐私泄露。联盟区块链中的数据共享为有效保护隐私的政府数据共享提供了一个有希望的方向。然而，由于政府数据不是由一个人或任何政府雇主拥有，因此很难将参与者的责任归因于激励区块链系统中的数据共享行为。此外，政府部门间共享的政府数据的范围和规模尚不明确，因为检索共享数据的目的是动态变化的。为了解决这些问题，我们提出了一种 Service-On-Chain（或简称为 SOC）方法。SOC方式可以有效识别不同部门的数据检索需求，同时高效共享政府数据，数据内容可信，数据所有权可控。特别是，我们利用智能合约提供链上服务，定义政府部门之间的数据共享协议，可以识别不明确的数据检索需求，并将流程逻辑形式化。我们将 SOC 方法应用于现实世界的场景，并证明 SOC 方法为政府部门之间安全高效的数据共享提供了可行的解决方案。它可以识别模糊的数据检索需求并形式化流程逻辑。我们将 SOC 方法应用于现实世界的场景，并证明 SOC 方法为政府部门之间安全高效的数据共享提供了可行的解决方案。它可以识别模糊的数据检索需求并形式化流程逻辑。我们将 SOC 方法应用于现实世界的场景，并证明 SOC 方法为政府部门之间安全高效的数据共享提供了可行的解决方案。