That's not
That's not a cord, that's a chord. Then you have a notochord which has nothing to do with music or wood. What would this cord sell for?
I think the entire firewood system should be completely overhauled. Value should be based on weight and species since available btu varies with species. Anyone selling firewood would have to use a certified scale to get the exact weight of the load and factor in the species to get the btu value of the load. Or not.
That'll never work. Dried/seasoned firewood would be less valuable than freshly cut wet-wood.
Regardless of species. Too many people wouldn't know one species from another, and there are more ways to cheat on weight than on a cord. Almost everybody owns a tape measure.
Anybody that buys much firewood eventually learns what they getting and how good the product is. I'd venture a guess that you can't build a good business by giving poor value to your customers. The marketplace will sort out the cheaters eventually.