In September the ARK Alliance (arks.org) will convert its documentation practices to align with modern form ARKs, the most visible difference being removal of the slash ('/') at the end of "ark:/". This is a non-breaking change -- two ARKs that differ only in form are considered equivalent in perpetuity. Details at https://arks.org/news/2025-07-28-documentation-change-from-classic-to-modern-arks/