Binance, one of the world’s largest cryptocurrency exchanges, was officially founded in July 2017 by Changpeng Zhao (commonly known as CZ). However, the question of “when Binance registered in mainland China” requires careful clarification because the company was never formally registered as a domestic exchange within mainland China’s legal framework. Instead, Binance was originally incorporated in Hong Kong in 2017, and its initial operations focused on the global market rather than exclusively serving Chinese users. At the time of its founding, cryptocurrency trading was still legal in China, but regulatory conditions were rapidly changing. Shortly after the launch, in September 2017, the People's Bank of China (PBOC) issued a nationwide ban on initial coin offerings (ICOs) and ordered all domestic cryptocurrency exchanges to cease operations. In response, Binance quickly relocated its headquarters and core operations to other jurisdictions, including Japan and later Malta, Seychelles, and the Cayman Islands. As a result, Binance never established a formal “mainland China registration” as a cryptocurrency exchange. What is often misunderstood is that while Binance had a significant user base in China at its inception, it did not obtain a Chinese business license for crypto trading. Over time, the company has repeatedly stated that it does not operate in mainland China, and it has actively blocked Chinese IP addresses and restricted access for users in the region. The confusion often stems from Binance’s early popularity among Chinese retail investors and its Chinese-speaking founder. Additionally, CZ previously worked in China for a period but founded Binance as an international project. Therefore, to answer the exact question: Binance as a company was established in July 2017, but its “mainland China registration” never occurred. For users seeking to understand the timeline, the key dates are July 2017 for global founding, September 2017 for the Chinese regulatory ban, and subsequent years for its total withdrawal from the Chinese market. Today, Binance is fully compliant with global regulations but explicitly excludes mainland China from its permitted jurisdictions. Understanding this distinction is important for anyone researching the exchange’s legal status and historical presence in China.