I have a new idea. We can publish column commitments, but when calculating the agg_com value, we can calculate the commitment value of H(ColumnComm)_i values. This way, if someone wants to add an extra column, they will not be able to add it because it is over the agg_com hash, and we will provide the things we provided in our previous design.
Originally posted by @megonen in https://github.com/logos-co/nomos-specs/issues/76#issuecomment-1985381412