Mobile app markets are emerging with the popularity of smartphones. However, they fall short in several aspects, including no transparent app listing, no world-wide app access, and even insecure app downloading. To address these problems, we propose a novel blockchain-based gateway, AGChain, to bridge end users and app markets so that existing app markets could still provide services while users enjoy permanent, distributed, and secure app delegation from AGChain. To this end, we identify two previously under-estimated challenges and propose mechanisms to significantly reduce gas costs in our smart contract and make IPFS (Inter-planetary File System) based file storage really distributed. We also address three AGChain-specific system challenges to make it secure and sustainable. We have implemented an AGChain prototype (https://www.agchain.ltd/) on Ethereum. The evaluation shows that it achieves security and decentralization with minimal gas costs and reasonable performance.

中文翻译：

---

AGChain：基于区块链的网关，用于从现有移动应用程序市场进行永久，分布式和安全的应用程序委派

随着智能手机的普及，移动应用市场正在兴起。但是，它们在几个方面都存在不足，包括没有透明的应用程序列表，没有全球范围的应用程序访问，甚至是不安全的应用程序下载。为了解决这些问题，我们提出了一种新颖的基于区块链的网关AGChain，以桥接最终用户和应用市场，以便当用户享受来自AGChain的永久，分布式和安全的应用委派时，现有的应用市场仍可以提供服务。为此，我们确定了两个先前被低估的挑战，并提出了可以显着降低智能合约中的天然气成本并使基于IPFS（行星际文件系统）的文件存储真正分布的机制。我们还将解决三个针对AGChain的特定系统挑战，以确保其安全性和可持续性。我们已经实现了AGChain原型（https：//www.agchain。ltd /）在以太坊上。评估表明，它以最小的燃气成本和合理的性能实现了安全性和分散性。