Collins' launched STBL adopts a dual-token structure, splitting the stablecoin function into two parts: one is a stablecoin used for payments, transfers, and trading; the other is a yield token corresponding to the underlying asset's returns.

The goal of this design is to allow users to continue using the stablecoin for payments and transactions while also accumulating the returns generated by the underlying reserve assets. Collins believes that existing crypto frameworks often require users to lock or stake their funds to earn yields, but once funds are locked, users cannot freely use that stablecoin. STBL aims to solve the contradiction between "circulability" and "interest-bearing" functionality.