THEMIS：具有报告完整性的去中心化和不可信任的广告平台
THEMIS: Decentralized and Trustless Ad Platform with Reporting Integrity
摘要：
在线广告助长了（看似）免费的互联网。然而，尽管用户可以免费访问大多数网站，但他们需要在隐私上付出沉重的代价，并盲目信任第三方和中间商，这些第三方和中间商吸收了大量的广告收入和用户数据。这也是用户选择不使用广告拦截器的原因之一，而广告拦截器反过来又让出版商损失了数百万美元的广告收入。现有的隐私保护广告方法（例如，Adnostic、Privad、Brave Ads）无法保证他们向广告商提供的性能分析的完整性，同时他们还依赖于用户必须信任而无法审计的集中式管理。在本文中，我们提出了THEMIS，这是一种新型的隐私设计广告平台，它是分散的，需要用户零信任。THEMIS（i）为所有参与者提供可验证性，（ii）奖励用户查看广告，以及（iii）允许广告商验证其广告活动的性能和计费报告。为了证明我们的方法的可行性和实用性，我们使用智能合约和零知识方案的组合实现了THEMIS的原型。性能评估结果表明，在广告支付过程中，THEMIS可以支持超过51M的单边链用户或153M的多边链用户，从而证明了THEMIS的线性扩展。
英文摘要：
Online advertising fuels the (seemingly) free internet. However, although users can access most websites free of charge, they need to pay a heavy cost on their privacy and blindly trust third parties and intermediaries that absorb great amounts of adrevenues and user data. This is one of the reasons users opt out from advertising by resorting ad blockers thatin turn cost publishers millions of dollars in lost adrevenues. Existing privacy-preserving advertising approaches(e.g., Adnostic, Privad, Brave Ads) from both industry and academia cannot guarantee the integrity of the performance analytics they provide to advertisers, while they also rely on centralized management that users have to trust without being able to audit. In this paper, we propose THEMIS, a novel privacy-by-design ad platform that is decentralized and requires zero trust from users. THEMIS (i) provides auditability to all participants, (ii) rewards users for viewing ads, and (iii) allows advertisers to verify the performance and billing reports of their ad campaigns. To demonstrate the feasibility and practicability of our approach, we implemented a prototype of THEMIS using a combination of smart contracts and zero-knowledge schemes. Performance evaluation results show that during adreward payouts, THEMIS can support more than 51M users on a single-sidechain setup or 153M users ona multi-sidechain setup, thus proving that THEMIS scales linearly.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
