The world-changing blockchain technique provides a novel method to establish a secure, trusted and decentralized system for solving the security and personal privacy problems in Industrial Internet of Things (IIoT) applications. The mining process in blockchain requires miners to solve a proof-of-work puzzle, which requires high computational power. However, the lightweight IIoT devices cannot directly participate in the mining process due to the limitation of power and computational resources. The edge computing service makes it possible for IIoT applications to build a blockchain network, in which IIoT devices purchase computational resources from edge servers and thus can offload their computational tasks. The amount of computational resource purchased by IIoT devices depends on how many profits they can get in the mining process, and will directly affect the security of the blockchain network. In this paper, we investigate the incentive mechanism for the blockchain platform to attract IIoT devices to purchase more computational power from edge servers to participate in the mining process, thereby building a more secure blockchain network. We model the interaction between the blockchain platform and IIoT devices as a two-stage Stackelberg game, where the blockchain platform act as the leader, and IIoT devices act as followers. We analyze the existence and uniqueness of the Stackelberg equilibrium, and propose an efficient algorithm to compute the Stackelberg equilibrium point. Furthermore, we evaluate the performance of our algorithm through extensive simulations, and analyze the strategies of blockchain platform and IIoT devices under different situations.

中文翻译：

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构建基于区块链的安全物联网的激励机制

改变世界的区块链技术提供了一种建立安全、可信和去中心化系统的新方法，以解决工业物联网 (IIoT) 应用中的安全和个人隐私问题。区块链中的挖矿过程需要矿工解决工作量证明难题，这需要很高的计算能力。然而，由于功率和计算资源的限制，轻量级 IIoT 设备无法直接参与挖矿过程。边缘计算服务使 IIoT 应用程序可以构建区块链网络，其中 IIoT 设备从边缘服务器购买计算资源，从而可以卸载其计算任务。IIoT 设备购买的计算资源量取决于它们在挖矿过程中可以获得多少利润，并将直接影响区块链网络的安全。在本文中，我们研究了区块链平台的激励机制，以吸引 IIoT 设备从边缘服务器购买更多计算能力以参与挖矿过程，从而构建更安全的区块链网络。我们将区块链平台和 IIoT 设备之间的交互建模为两阶段 Stackelberg 博弈，其中区块链平台充当领导者，IIoT 设备充当跟随者。我们分析了 Stackelberg 均衡点的存在唯一性，并提出了一种计算 Stackelberg 均衡点的有效算法。此外，我们通过广泛的模拟来评估我们算法的性能，并分析区块链平台和 IIoT 设备在不同情况下的策略。