Gainium Logo

CoinFLEX

CoinFLEX Overview

CoinFLEX is a crypto derivatives exchange specializing in physically-delivered futures contracts for Bitcoin, Ethereum, and Bitcoin Cash against Tether, offering up to 20x leverage and stablecoin-to-stablecoin trading.

Country: Seychelles

Year Stablished: 2019

Type: Centralized Exchange

URL: https://coinflex.com/

US Allowed: Yes

Offer Derivatives: Yes

CoinFLEX Fees

Maker: 0.05%

Taker: 0.1%

Withrawal Fee: Varies by asset (often 0 for major cryptos)

CoinFLEX Limits

With KYCWithout KYC
Withdrawal Limit300,000 USDT (KYC2 verification)6,000 USDTDay

Minimum order size: Varies by asset (e.g., 50 CET ≈ $1)

Minimum deposit size:

CoinFLEX Supported Bots

Futures

None supported

CoinFLEX Review

Cryptocurrency exchanges have transformed how we trade digital assets, but not all stories in this space are success stories. I've been following CoinFLEX's journey since its inception, and boy, what a rollercoaster it's been.

The Rise of CoinFLEX: From Promising Beginnings to Industry Innovation

CoinFLEX, short for Coin Futures Lending Exchange, emerged as a specialized platform offering physically-delivered futures contracts for major cryptocurrencies. Unlike cash-settled futures where you get the equivalent money value at expiration, CoinFLEX actually delivered the underlying cryptocurrency - a feature that attracted serious traders looking for real exposure to digital assets.

The exchange originally launched as CoinfloorEX under the UK-regulated Coinfloor umbrella before establishing itself as an independent entity. I remember when they announced their $10 million funding round led by Polychain Capital and NGC Ventures in 2019 - it seemed like they were positioned for growth with solid backing.

What caught my attention about CoinFLEX was their competitive fee structure - just 0.10% for taker fees and an attractive 0.05% for maker fees, plus zero withdrawal fees for several cryptocurrencies including Bitcoin, Bitcoin Cash, and their native FLEX token. For active traders, these small differences in fees add up quickly!

Their physically-settled futures contracts for BTC, ETH, and BCH against Tether with up to 20x leverage made them stand out in a crowded market. They were even planning to offer Libra futures contracts in 2019 before Facebook's cryptocurrency project was eventually cancelled.

The Infamous 2022 Liquidity Crisis: When Things Fell Apart

Everything changed in June 2022. I still remember checking my crypto news feed and seeing the shocking announcement - CoinFLEX had halted all withdrawals. The reason? A single high-profile customer had allegedly failed to meet a margin call worth a staggering $84 million.

That customer was later revealed to be none other than Roger Ver, sometimes called "Bitcoin Jesus" for his early evangelism of cryptocurrency. According to CoinFLEX, Ver had failed to meet an $84 million margin call, leading to the exchange's dramatic liquidity crisis.

The plot thickened when Ver publicly disputed this claim. In a revealing video interview, Ver claimed he actually had positive equity and a manual margin agreement with the exchange. According to his account, when he requested to close his positions, CEO Mark Lamb refused - allegedly to maintain the appearance of having their largest trader before a $40 million investment round.

Talk about drama! I mean, who needs Netflix when you have crypto?

Desperate Recovery Attempts: The rvUSD Token

In an attempt to stay afloat, CoinFLEX made a controversial move - launching a recovery token called rvUSD with a promised 20% annual yield. The goal was to raise $47 million to compensate users who were unable to access their funds.

Honestly, offering a 20% yield in the middle of a liquidity crisis seemed… optimistic at best. It reminded me of offering someone drowning a glass of water. The exchange also implemented transparent leveraged position reporting after the crisis, which felt a bit like installing a smoke alarm after the house had burned down.

By July 2022, the situation had deteriorated further. CoinFLEX temporarily allowed users to withdraw just 10% of their funds, with the remaining 90% still locked on the platform. Their native FLEX token lost its status as collateral during this period, further complicating matters for users who held it.

As users desperately wondered if they'd ever see their money again, CoinFLEX took legal action. The exchange initiated arbitration proceedings in Hong Kong to recover the $84 million allegedly owed by Roger Ver.

By September 2022, CoinFLEX had filed for restructuring in Seychelles, with 65% ownership going to creditors. The SmartBCH Foundation was tasked with monitoring creditor protections - crucial since the exchange maintained integration with the smartBCH blockchain for Bitcoin Cash transactions.

The Final Blow: The 2023 Hack

Just when it seemed things couldn't get worse, they did. In September 2023, CoinFLEX suffered a devastating $70 million hack due to compromised private keys, allegedly by the notorious Lazarus Group. Security has always been the Achilles heel of crypto exchanges, but this hack effectively delivered the knockout punch to an already struggling platform.

Lessons from the CoinFLEX Saga

Before everything went south, some users actually had positive experiences with CoinFLEX. Early platform reviews highlighted its unique features, including those physically delivered futures contracts and competitive fees. The platform was promoted as having no internal trading team working against clients - a selling point for traders concerned about conflicts of interest.

CoinFLEX also offered yield-earning products through their AMM (Automated Market Maker) system, which claimed to provide high yields of 20-30% APR on crypto holdings. Their stablecoin product, FlexUSD, even promised to pay interest every 8 hours - generous terms that, in retrospect, were perhaps unsustainable.

The Takeaway: Trust But Verify in Crypto

The story of CoinFLEX offers a sobering reminder about the risks of cryptocurrency exchanges. Even platforms with legitimate offerings, institutional backing, and innovative products can implode when risk management fails or when transparency is lacking.

For those still active in crypto trading, the CoinFLEX saga emphasizes the importance of KYC procedures and withdrawal limits. The exchange required KYC verification for higher withdrawal limits (up to 300,000 USDT per day), which at least provided some regulatory oversight.

In an industry built on the premise of "don't trust, verify," perhaps the most important lesson is to never keep more funds on an exchange than you can afford to lose. Because sometimes, even Bitcoin Jesus can't perform financial miracles.

CoinFLEX Supported Coins

Supported tokens (2)
flex-coin (FLEX)
binancecoin (BNB)
USD: 2 pairs
FLEX/USD
BNB/USD

What are you waiting for? Get started in minutes, no credit card required.

Gainium logo

Gainium - Empower Your Crypto Trading: Research, Deploy, Analyze | Product Hunt

Gainium Pte. Ltd.
68 Circular Rd. #02-01 Singapore (049422)

Community

All rights reserved. Copyright © 2025.

Gainium is a publisher of financial information, not an investment adviser. We do not provide personalized or individualized investment advice. Cryptocurrencies are volatile investments and carry significant risk including the risk of permanent and total loss. Past performance is not indicative of future results. Figures and charts are correct at the time of writing or as otherwise specified. Live-tested strategies are not recommendations. Consult your financial adviser before making financial decisions.