5 ms·
Ask HN: How does e-yuan handle offline transactions?
I am trying to find information on the technical inner workings of the payment system that China developed and claims it can complete transactions while completely offline.
I can imagine that it might work for limited amount of time with something like a secure enclave until it eventually synchronises with a a central network but I am curious to know exactly what they do.
- aspenmayer 5y agoI found some documents about it a while ago, I'll see what I can turn up. https://en.wikipedia.org/wiki/Digital_renminbi https://en.wikipedia.org/wiki/Digital_renminbi Careful what you click on when researching DCEP/E-CNY. You have been warned. Here's a VirusTotal graph I made based on a pdf about the e-yuan. Not saying it's a virus, but some of the things on that graph are, so do tread lightly. You can safely view the graph of linked content without worrying about getting infected. You will need a VirusTotal account, but they are free on the low end. https://www.virustotal.com/graph/embed/ga2848f99331c4f9ba9c93a1e67dc2e76fa6782831206465db5f03bf3e8483786 https://www.virustotal.com/graph/embed/ga2848f99331c4f9ba9c9... Here's Google's cache of the same pdf, which renders in browser but not as a pdf, apparently. The header includes a direct link to the pdfs, or you can grab it from the link itself, if you're so inclined. Progress of Research & Development of E-CNY in China Working Group on E-CNY Research and Development of the People's Bank of China July, 2021 https://webcache.googleusercontent.com/search?q=cache:RbBnR4QURWIJ:www.pbc.gov.cn/en/3688110/3688172/4157443/4293696/2021071614584691871.pdf https://webcache.googleusercontent.com/search?q=cache:RbBnR4... Roadmap to Implement Legal Entity Identifier (LEI) in China (2020-2022) Jointly released by the People’s Bank of China, the China Banking and Insurance Regulatory Commission, the China Securities Regulatory Commission and the State Administration of Foreign Exchange November, 2020 https://webcache.googleusercontent.com/search?q=cache:PYIGv5w7dzwJ:www.pbc.gov.cn/en/3688110/3688172/4048269/4153721/2020122810263325984.pdf https://webcache.googleusercontent.com/search?q=cache:PYIGv5... 2021 RMB INTERNATIONALIZATION REPORT https://webcache.googleusercontent.com/search?q=cache:mth3ID8xU-EJ:www.pbc.gov.cn/en/3688110/3688172/4157443/4433239/2021122809344466286.pdf https://webcache.googleusercontent.com/search?q=cache:mth3ID... China’s Digital Yuan: An Alternative to the Dollar-Dominated Financial System Rajesh Bansal and Somya Singh August 2021 https://webcache.googleusercontent.com/search?q=cache:-Bgrxdd7FgoJ:https://carnegieendowment.org/files/202108-Bansal_Singh_-_Chinas_Digital_Yuan.pdf https://webcache.googleusercontent.com/search?q=cache:-Bgrxd... Good sections to check out in that last one: Bilateral Trade in Dollars Between China and Russia Hit an All-Time Low Rise in Alternatives to SWIFT
- sergiomattei 5y agoI’m curious about this graph. What’d be the purpose of infecting this PDF? Now I’ll be worried about opening random PDFs in the future…
- aspenmayer 5y agoTracking pixels are just the start. A/B testing different versions of tracking pixels to track leaks, for example. Malware hypertargeted to interest groups?