Helmet is built by option trading logic as the underlying, point-to-point asset price insurance trading protocol. Any person or agreement can create insurance for an asset by calling a Helmet contract and publish a policy to the market. The Helmet contract is deployed on the BSC(Binance Smart Chain) and focuses on serving BSC's on-chain assets. Users combine four elements -- the use scenario of insurance, the type of insurance assets, the period of validity of insurance and the price of insurance policy to build and spell out the insurance variety they want to release.