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About Us

Our mission is to provide a market where both sellers and buyers can be assured of fast, reliable, and secure transactions.
Fred Zhang


Hyun Soo Kim


The cofounders of WaterMelonMarkets are Fred Zhang and Hyun Soo Kim. Together, they are serial entrepreneurs. Fred graduated from Harvard with a degree in math and a doctorate in economics, and has started many successful startups before, including PrepScholar, an online education site, and Freedom Equity Properties, a real estate company. Hyun graduated from MIT with a degree in Computer Science and previously cofounded a highly successful high frequency trading firm.

Both are committed to the lowest prices and highest customer satisfaction, and are glad to stake their reputation on the integrity of WaterMelonMarkets.

USA Founders, Sales, and Support

WaterMelonMarket's founders, engineers, and support / sales staff are 100% in the USA. We're confident that our checkout process is fast, reliable, and secure. But in the cases that you do want some extra help, be assured that you'll be talking to a USA-based staff who have the understanding, authority, and discretion to solve your problem completely on the spot.


We are a US-based team of serial entrepreneurs who have founded multiple successful companies in the past. We are focusing on the needs of consumers who want to buy inexpensive items because we were end-users (both on the buyer and seller side) before we started WaterMelonMarkets. We understand that both buyers and sellers want reliability, safety, and low fees, and we’re leveraging smart contracts to solve this problem.

We have numerous satisfied customers, as you can verify yourself on the blockchain. We've been doing on-chain gift card transactions since 2022.

Our mission is to provide a market where both sellers and buyers can be assured of fast, reliable, and secure transactions.

Where We Are

WaterMelonMarkets has a physical team and a logistics address. Our founders and physical team are based in the Boston area and operate on US Eastern Time. Our official physical address for mails, return logistics, and so forth is in Las Vegas, Nevada. Contact us officially at:

8020 S Rainbow Rd #552,
Las Vegas, NV 89139

Save Big, Pay Securely


> 50% Savings, Direct from the Seller

Sellers are peers who have extra gift cards they don't need. For example teachers who receive gift cards from parents, and are happy to trade it for any cash, leading to large discounts for buyers. Watermelon Markets doesn't charge a fee -- your peer sellers gets your full payment.


Safe and Reliable

The seller doesn't receive your payment until you get your gift card. You may even use your gift card fully before releasing funds. This ensures the gift card is good.


SafeEscrow Transactions

All transactions occur under our SafeEscrow system, which uses USDC-Polygon crypto payments to ensure full security. Never used USDC before? No worries, check out our Quickstart and Guide.

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