fix superscript on fn42, change links to nakamotoinstitute if available
fix superscript on fn42, change links to nakamotoinstitute if available

NakamotoInstitute/nakamotoinstitute.org,NakamotoInstitute/nakamotoinstitute.org,NakamotoInstitute/nakamotoinstitute.org,NakamotoInstitute/nakamotoinstitute.org,NakamotoInstitute/nakamotoinstitute.org