Contango V1 Review 2026: Sunset Expirables on Arbitrum

Contango V1 was the first product from Contango, a decentralized derivatives protocol. It launched in Q4 2022 and offered expirables, which are contracts to buy or sell an asset at a set price and date in the future.

The project's own material says v1 was sunset in late 2023. Contango then released v2 in Q4 2023 and later exited beta on its main app. The current homepage focuses on DeFi looping with leveraged positions on lending markets.

On DeFiLlama the V1 listing still shows about $284,000 in TVL across Arbitrum and Ethereum, with all of it on Arbitrum. It is listed under derivatives and shows a TANGO token.

Contango V1 let traders take positions on an asset at a fixed future date. It was built on Yield Protocol's fixed-rate lending on Arbitrum. A trader could effectively lock in a price and rate until expiry, similar to a futures contract.

The design was aimed at traders who wanted known borrowing costs rather than variable funding. At expiry the contract settled, and the position either closed or had to be rolled into a new one.

The team later shifted to a different model. The current homepage describes looping, where a flash loan, a spot swap, a deposit into a money market and a borrow are combined in one transaction to build leveraged positions. That is the v2 and later approach, not v1.

Fees for Contango V1 are not published. Anyone looking for them would need to check the project's documentation.

On a fixed-rate design, costs generally include the interest rate embedded in the contract, swap costs on the underlying market and network gas fees on Arbitrum or Ethereum. Because v1 is sunset, these costs are mostly of historical interest.

Contango says its v1 and v2 smart contracts were audited by ABDK, and that it uses Hypernative for live monitoring. DeFiLlama lists no audits for this entry. The homepage also mentions an operational security audit, but public sources do not give a report or date.

Leveraged and expiring contracts carry liquidation, pricing and smart-contract risk. Positions built on other protocols also depend on those protocols staying secure. No incidents are described. Because v1 is sunset, the main concern is whether any remaining funds or contracts still need action by users.

Contango V1 suits readers researching the history of fixed-rate and expiring on-chain derivatives, or early users checking what happened to their positions and points. Active traders should look at the current Contango app instead.