Star Xu

Star Xu — whose full name is Xu Mingxing — is a Chinese entrepreneur and software engineer who founded OKCoin in 2013, one of the earliest and largest Bitcoin exchanges in China. Xu discovered Bitcoin in 2012 and recognised the opportunity to build the trading infrastructure that would be necessary if China's enormous population was to participate in the emerging cryptocurrency markets. OKCoin launched as a spot trading platform and quickly became one of the dominant exchanges in the Chinese market alongside Huobi and BTCC.

Xu's background was in software engineering and entrepreneurship in China's tech sector before crypto. He was an early practitioner of what would become standard in the Chinese crypto exchange playbook: aggressive user acquisition, competitive fee structures, high liquidity through market-maker relationships, and rapid expansion of tradeable assets to capture as much of the market's trading interest as possible.

OKCoin expanded rapidly through 2013–2017, adding derivatives products — futures, perpetuals, and options — that made it particularly popular with professional traders seeking leveraged exposure to Bitcoin and other cryptocurrencies. The derivatives business was spun out and rebranded as OKEx in 2017 to separate the spot and derivatives offerings, with OKCoin focusing on the spot markets and OKEx on derivatives.

The broader entity — encompassing OKCoin, OKEx, OK Blockchain Capital, and various other subsidiaries — was organised under the OK Group holding company. China's repeated crackdowns on cryptocurrency trading, culminating in the comprehensive ban on all crypto transactions in September 2021, forced OKX (the rebranded combined entity) to cease serving Chinese users entirely and pivot to a global strategy centred on users in Europe, Southeast Asia, the Middle East, and Latin America.

The unified OKX rebrand in 2022 consolidated the various OK-branded products under a single global exchange brand. OKX has since grown into one of the top three crypto exchanges globally by volume, offering spot, derivatives, DeFi, NFT marketplace, and Web3 wallet services.

OKX's trajectory has not been without crises. In October 2020, OKEx — at that time one of the world's largest derivatives exchanges — suspended all cryptocurrency withdrawals for five weeks, citing an investigation involving a key holder of the private keys required for cold wallet withdrawals. The incident raised serious questions about OKEx's custody arrangements and the concentration of access to withdrawal authorisation. Withdrawals were eventually restored, but the episode damaged trust among institutional users.

Xu has maintained a lower public profile than many of his Western crypto exchange counterparts, operating primarily through Chinese-language media and industry events in Asia. OKX has invested heavily in sports sponsorship — becoming a global partner of Manchester City Football Club and a title sponsor in Formula 1 — as part of a brand-building strategy targeting mainstream awareness in Western markets.

OKX has expanded aggressively into Web3 infrastructure, launching a non-custodial multi-chain wallet (OKX Wallet), an NFT marketplace aggregator, a DeFi portfolio dashboard, and OKX Chain (now X Layer) — a ZK EVM Layer-2 blockchain built using Polygon CDK technology. X Layer allows OKX to offer its users a native DeFi environment with access to on-chain trading, yield farming, and NFTs at lower cost than Ethereum mainnet, positioning OKX as more than a centralised exchange but a gateway to the broader Web3 ecosystem.