ONE is still easy to buy and trade on major centralized exchanges. Liquidity sits mostly in ONE/USDT pairs, with some BTC markets around. Always double-check the deposit network before you move funds (Harmony mainnet / shard 0 for native ONE). And do your own due diligence—fees, KYC, and availability change.

Major centralized exchanges (CEX)

Binance (global)

ONE is listed on Binance. It’s typically paired against USDT (and sometimes BTC). Check the Markets tab for current pairs before trading. 

Binance.US (U.S. customers)

ONE trades on Binance.US—confirmed spot pair: ONE/USDT. Their asset page also notes Harmony deposits should use Shard 0. 

KuCoin

Active market with ONE/USDT. KuCoin remains one of the easier options for non-U.S. users. 

Gate (gate.io / gate.com)

Live ONE/USDT market, plus card/bank/P2P on-ramps in many regions. 

HTX (formerly Huobi Global)

ONE trades on HTX—look for ONE/USDT on spot. Note: Huobi Korea shut down in 2021; trade on HTX Global. 

AscendEX (formerly BitMax)

BitMax rebranded to AscendEX; ONE is available (commonly ONE/USDT). 

MEXC

Spot market ONE/USDT available. Simple KYC; broad country coverage. 

OKX

OKX lists ONE; their learn page references the ONE/USDT spot pair. 

CoinEx

Another liquid ONE/USDT venue if you want more market depth options. 

WazirX (India)

For INR on-ramping, WazirX supports ONE/USDT trading. Deposit INR → buy USDT → swap to ONE. 

BitMart

Available on spot (ONE/USDT, ONE/BTC) and they added a ONE/USDT perpetual in 2024. Use if it fits your needs. 

Not on Coinbase: Coinbase shows a price page for Harmony, but ONE isn’t tradable on Coinbase as of today.

Decentralized options (DEX) — read this first

Harmony’s native DEX liquidity exists (e.g., legacy deployments like Sushi on Harmony), but volumes are modest post-2022 bridge exploit. If you must use a DEX, verify liquidity and slippage, and confirm you’re on the Harmony mainnet with the correct token. The 2022 Horizon bridge hack (~$100M) changed cross-chain flows and wrapped assets—so triple-check routes and bridges. 

Fiat on-ramps (buy with card/bank, then swap to ONE)

  • Crypto.com app supports ONE (campaigns and staking have featured it). You can purchase via card/bank in supported regions, then hold or withdraw. 
  • CoinSpot (Australia) lists ONE with easy AUD deposits. 
  • Uphold offers direct buy/sell for Harmony (bank card and transfers; U.S., EU, UK supported). 

Tip: If your local exchange doesn’t have a direct fiat→ONE pair, buy USDT or BTC first, then trade into ONE/USDT or ONE/BTC on a liquid venue. A quick market check on CoinMarketCap also shows where the volume is right now. 

What to remove or rewrite from older guides

  • “Huobi Korea” listings — the Korean branch closed in 2021; use HTX Global. 
  • “BitMax” — now AscendEX. Update the name and links. 
  • Bitcoin.com Exchange — rebranded to FMFW.io (check availability before linking). 
  • Bcnex, Coinfinit, BiHODL, Bilaxy — low transparency or inactive/hacked histories. Not recommended for most readers in 2025. (Bilaxy suffered a 2021 hack; service reliability remains a concern.) 

Quick safety checklist (worth repeating)

  • Network match: Harmony mainnet / Shard 0 for native ONE when depositing to CEX.
  • Bridges: Prefer reputable, audited bridges if you must move assets cross-chain. Post-Horizon exploit, routes changed. 
  • Liquidity: Stick to pairs with real depth (ONE/USDT is usually best). Check order books first.