Hi Bill, to answer this question I had to do a search to make sure. The 'copyright symbol' is mostly on the baseline.

I found some tips if this is helpful - For copyright symbols that rest on the baseline, try matching the size to the x-height of the font.
For copyright symbols that are superscripted, reduce their size to about 55–60% of your text size. (raised slightly and reduced in size).
™ © ®. In some browsers some of these copyright symbols may not appear correctly depending on the fonts installed.