OKX is the third-largest cryptocurrency exchange by trading volume, founded in 2017 by Star Xu and processing roughly $40 billion in daily derivatives turnover across one of the deepest perpetuals order books in the market.

Perpetual swaps run up to 100x leverage in USDT, USDC, and coin-margined variants, backed by a unified account that margins spot, futures, and options from one collateral pool. OKX was also the first global exchange to list perpetuals priced on licensed ICE Brent and WTI oil benchmarks, extending its engine beyond crypto.

Its regulatory footprint is among the broadest in the industry. A MiCA license from Malta's MFSA passports across the EEA alongside a MiFID II derivatives venue, approvals include VARA, MAS, and AUSTRAC, and a compliant US entity relaunched from San Jose after settling with the Department of Justice.

Custody claims are verifiable rather than asserted. More than 40 consecutive monthly Proof of Reserves reports use zk-STARK cryptography to show over $20 billion in primary assets covered above a 1:1 ratio, and the main exchange has no major disclosed hack in its history.

MEXC is the highest-leverage major perpetuals venue, founded in 2018 and now serving more than 40 million users across 170+ countries from its Seychelles base. Its catalog of 3,000+ listed tokens is among the largest in the industry.

The futures platform runs 700+ perpetual pairs at up to 500x leverage with the lowest standard fee schedule of any major exchange, charging nothing on maker orders and 0.02% on takers before MX token discounts.

Its regulatory posture is the trade-off. MEXC holds no license from a major financial regulator and has drawn warnings from authorities including Germany's BaFin, the UK's FCA, and Hong Kong's SFC, so users trade without the consumer protections regulated venues carry.

Security rests on verifiable reserves rather than oversight. Monthly Hacken-audited Proof of Reserves shows major assets backed well above 100%, a $100 million Guardian Fund with public wallet addresses backstops users, and no exchange-level hack has been confirmed since founding.