In a circular economy, tracking the flow of second-life components for quality control is critical. Tokenization can enhance the transparency of the flow of second-life components. However, simple tokenization does not correspond to real economic models and lacks the ability to finely manage complex business processes. In particular, existing systems have to take into account the different roles of the parties in the supply chain. Based on the Algorand blockchain, we propose a role-based token management scheme, which can achieve authentication, synthesis, circulation, and reuse of these second-life components in a trustless environment. The proposed scheme not only achieves fine-grained and scalable second-life component management, but also enables on-chain trading, subsidies, and green-bond issuance. Furthermore, we implemented and performed scalability tests for the proposed architecture on Algorand blockchain using its smart contracts and Algorand Standard Assets (ASA). The open-source implementation, tests, along with results are available on our Github page.

翻译：在循环经济中,跟踪用于质量控制的第二生命组成部分的流动至关重要。当权可以提高第二生命组成部分流动的透明度。然而,简单的象征性化并不符合实际经济模式,而且缺乏精细管理复杂业务流程的能力。特别是,现有系统必须考虑到供应链中各方的不同作用。根据阿尔戈兰链,我们提出了一个基于作用的象征性管理计划,它可以在一个没有信任的环境中实现这些第二生命组成部分的认证、合成、循环和再利用。拟议的计划不仅能够实现精细的和可扩展的第二生命组成部分管理,而且还能够实现链内贸易、补贴和绿色债券的发放。此外,我们还利用阿尔戈兰链和阿尔戈兰标准资产(ASA)的智能合同和阿尔戈兰标准资产(ASA)对拟议的阿尔戈兰链结构进行了可扩缩性测试。开放源的实施、测试以及结果可以在我们的Github网页上查阅。