在多層式區塊鏈上共享隱私保護資料：醫療保健的案例研究

Abstract

本篇論文設計一個資料交換系統架構應用在醫療保健的案例上，將解決以下兩個問題，第一，小孩子不記得是否接種過疫苗而重複施打相同的疫苗；第二，完成醫院與醫院間交換電子病歷。同樣的觀念也可以應用在下列情況，如果有人在不同的醫院看病，每家醫院開的藥品可能會有交互作用，服用後可能造成不良的影響，醫生就可以透過區塊鏈上的資訊來避免開到傷害到病人的藥。 由於現今浮在檯面上的醫療區塊鏈相關應用，都是使用以太坊來實作，本篇論文不同於其他以太坊應用提出了新的多層式區塊鏈架構，更換了共識機制，使得交易速率大幅提升更符合使用上的合理性。

This thesis designs a data exchange system architecture and applies it to healthcare cases, and will solve the following two problems. First, children may forget whether the type vaccines that has been vaccinated or not. Then, he/she has to vaccinate again in case. Second, we implement the medical record exchange between hospitals. The same concept can also be applied to the following situations. If someone sees a doctor in different hospitals, the medicines from different hospital may have drug interactions, which may cause side effects after taking them at the same time. Doctors can avoid this situation with the information through the blockchain. Recently, the applications of the medical blockchain are mostly implemented by Ethereum. This thesis, unlike other Ethereum applications, also proposed a new multi-layer blockchain architecture and replaced the consensus mechanism in order to speed up and make the system more reasonable in use.