opXOns

Options, simplified.

Transparent parameters per series Live countdown & availability On-chain execution

A modern options marketplace for on-chain assets

Buy option contracts with transparent rules, clear pricing, and real-time expiry. Built for investors who want structure—not hype.

📈 Explore Markets 🧠 How It Works

Options can expire worthless. Only use funds you can afford to risk. This page is informational and not financial advice.

What you see on every series

Strike • Premium • Maturity • Remaining

Everything is defined at deployment. You can validate rules directly on-chain.

Execution

Quote → Approve → Buy

Quotes are computed by the contract. Buy uses a max-premium cap to protect you from unexpected changes.

Expiry

Countdown to maturity

Buy is open before maturity. Exercise is allowed in the defined exercise window.

1) Pick a series

Each series defines strike, maturity, premium basis points, platform fee, and cap. You choose the series that matches your view.

2) Quote your size

Enter an underlying amount and pick a stablecoin. opXOns reads the contract quote for premium and strike.

3) Buy (protected)

You set a max premium. The buy call reverts if the premium exceeds your cap. Transparent and controlled.

Core terms

Strike

Fixed price per 1 unit of underlying

Premium

Cost paid upfront to buy the option

Maturity

Timestamp when buy closes

Exercise window

Allowed time to exercise after maturity

Typical flow

Quote

Read premium + strike from contract

Approve

Allow contract to spend your stable

Buy

Purchase option tokens for your size

Exercise

Later, exercise if profitable (in-window)

FAQ

An option is a contract that gives you the right (not the obligation) to buy an underlying asset at a fixed price (strike) before it expires.

If the option expires out-of-the-money, it may be worthless. If it is in-the-money, it can be exercised during the allowed exercise window.

Each series has transparent parameters (strike, premium, maturity, fee). The contract quotes premium and strike amounts in the selected stablecoin.

A supported wallet setup on your website (e.g., local wallet key flow) and stablecoin balance for premium/strike when applicable.

Open Markets

Browse open series and buy directly.