ORCID id logo with TikZ

ORCIDid.tex

\documentclass{article}
\usepackage{tikz}
\usepackage{calc}

\newlength{\ORCIDidheight}
\newlength{\ORCIDidunit}
\definecolor{ORCIDgreen}{HTML}{A6CE39}
\newcommand{\ORCIDid}{%
  % Scale icon to match current line height
  \settoheight{\ORCIDidheight}{AXg}%
  \setlength{\ORCIDidunit}{1.2pt * \ratio{\ORCIDidheight}{256 pt}}%
  \raisebox{0.5\depth}{\parbox{\ORCIDidheight}{%
    \begin{tikzpicture}[x=\ORCIDidunit, y=\ORCIDidunit, inner sep=0pt, outer sep=0pt]%
      \fill[ORCIDgreen] (128,128) circle (128);% outer
      \fill[white] (70,177) rectangle (86,70);% i bottom
      \fill[white] (78,200) circle (10);% i dot
      \fill[white] (109,177) -- (150,177) %
      .. controls (190,177) and (208,149)%
      .. (208,123)%
      .. controls (208,96) and (186,70)%
      .. (150,70)%
      -- (109,70)%
      -- (109,177) -- cycle%
      (124,84)%
      -- (150,84)%
      .. controls (186,84) and (192,110)%
      .. (192,123)%
      .. controls (192,145) and (178,163)%
      .. (150,163) -- (124,163)%
      -- (124,84) -- cycle;% D
  \end{tikzpicture}%
  }}%
}
\begin{document}
John Doe \ORCIDid
\end{document}

% License: CC0 (but be aware that ORCID owns the copyright for the icon)

Output: