Multiple projects in the ReFi space are using Bancor based bonding curves to sustainably mint their tokens while providing a 100% liquid token.
GoodDollar has been the first project to do it at scale, CommonsStack following soon after with their generic framework for funding public goods first launching the Token Engineering Commons. Other noticeable projects are Kolektivo and Grassroots Economics.
Currently the above projects use a single token as the collateral (cDAI, xDAI).
We propose to research and develop a bonding curve with a collateral token based on BPT which would allow projects to diversify their collateral, making it more robust, but also to include in it other assets of mission aligned projects, carbon tokens etc.