As of November 2nd, ACS publications began requiring ORCID id’s for all authors publishing with them. ACS reports that ORCIDs have already been published in several articles in both PDF and HTML formats. RSC is scheduled to require author ORCIDs as of November 30th, 2016.
For more information about ORCID and publisher requirements, please see https://orcid.org/content/mandating-orcid-publication-workflows-open-letter
Please feel free to contact me with any questions about ORCID at firstname.lastname@example.org.