[Margaret Pilkington]

Well, I am not sure about your concern regarding copyright of intellectual property.
There have been recent big court cases with regards to who wrote what song(and yes, I know it isn't quite the same....but it is still written work) with those found guilty being made to pay eye watering damages.
I know that isn't really your concern, but it just seems a shame if the work you have done cannot be accessed in a controlled way.
There must be some organisation out there that would be trustworthy in ensuring that your work was available to view, but without the possibility of it being stolen or mistreated.