Dopex: Single-Staking Option Vaults and Insurance on GMX Perps Dopex offers Single-Staking Option Vaults (SSOV) that work similarly to Ribbon’s vaults. Users can lock their tokens for a fixed period of time and earn profits. However, with Dopex, you also need to select a fixed strike price at which you wish to sell the call option. #crypto2023 #cryptotrading #bitcoindifficulty