Certificates can be assigned whenever. Just like you can purchase an object that has already been made, or you can pay someone to make it for you. The impact purchase is buying things that have already been made, mostly because that is more novel and potentially neglected.
There is also a distinction between purchasing equity and purchasing outputs. For example, an entrepreneur might give GWWC seed capital in exchange for 10% of all of their future profits (which might be unsold certificates). A donor might instead pay GWWC for 1% of GWWC’s outputs over the last year, or for 1% of GWWC’s outputs over the next year, or for some particular output that the donor particularly likes.
Certificates can be assigned whenever. Just like you can purchase an object that has already been made, or you can pay someone to make it for you. The impact purchase is buying things that have already been made, mostly because that is more novel and potentially neglected.
There is also a distinction between purchasing equity and purchasing outputs. For example, an entrepreneur might give GWWC seed capital in exchange for 10% of all of their future profits (which might be unsold certificates). A donor might instead pay GWWC for 1% of GWWC’s outputs over the last year, or for 1% of GWWC’s outputs over the next year, or for some particular output that the donor particularly likes.