I am struggling currently with finding the right implementation possibility for a token with the following properties:
- Asset-backed token based on a non-fungible asset (like a piece of art)
- More than one owner per token (crowd-ownership on each non fungible asset) e.g. multiple owners of one piece of art
A non fungible asset would lead into the direction of using ERC721 (which has been used e.g. by cryptokitties). The problem of this standard is that it would not allow multiple owners of a token because each token is not divisible.
I thought about multiple options but couldnt find out whether they are possible. For example would it be possible to have an ERC20 token "own" a ERC721?