"We’re excited to announce that GitHub is partnering with ORCID. You can now authenticate your ORCID account with your GitHub account, and display your ORCID iD on your public GitHub profile. ORCID provides a persistent unique digital identifier (an ORCID iD) that researchers own and control, and that distinguishes them from every other researcher."

Go to https://github.com/settings/profile to authenticate your ORCID iD.