A professional stamp in relief

Question

Related to these previous my questions A special annulment (i.e., cancellation) of a stamp and Date time in two rows in Italian format and time zone I have created another MWE to have some different choices and a more professional timbre.

\documentclass[12pt,margin=3mm,italian]{standalone}
\usepackage{newtxtext}
\usepackage[dvipsnames]{xcolor}
\usepackage{tikz}
\usepackage[useregional=numeric,showseconds=true,showzone=false]{datetime2}
\usepackage{fontawesome5}
\begin{document}
\begin{tikzpicture}
\draw (0,0) node[minimum size=4cm,
                 draw=black,
                 circle,
                 line width=.5mm, 
                 text width=3cm,
                 align=center] 
                 {\large \bfseries \mbox{\DTMtoday} \DTMcurrenttime};
\draw [black,line width=.35mm] (0,0) circle[radius=1.75cm];
                 {\large \bfseries \mbox{\DTMtoday} \DTMcurrenttime};

\node at (0,1) (A) {\textcolor{Green}{\large Visto}};
\node at (0,-1) (B) {\small \textsc{Non approvato}};
\end{tikzpicture}
\end{document}

I would to have

the circumferences in relief, deleting "non approvato" and "visto" in the middle part, putting them between the two circumferences.

Answer 1

With quite a lot of help from https://tex.stackexchange.com/a/545988/87678, it's possible to come up with something that looks a bit like your picture. You could further tweak the various settings to your liking.

It's pretty slow to compile though! It would probably be quicker, easier, and nicer looking to to script something with ImageMagick.

\documentclass[italian]{standalone}
\usepackage[useregional=numeric,showseconds=true,showzone=false]{datetime2}
\usepackage{tikz}
\usetikzlibrary{decorations.text, shadows.blur}
\pgfmathsetmacro{\shadowangle}{132}
\newlength{\shadowdistance}
\pgfmathsetlength{\shadowdistance}{0.3pt}
\pgfmathsetmacro{\shadowopacity}{0.7}
\pgfmathsetmacro{\shadowspread}{0.02}
\pgfmathsetmacro{\shadowsize}{0}
\pgfmathtruncatemacro{\totshadow}{100}
\begin{document}
\begin{tikzpicture}[
    datetime/.style={
      align=center,
      font=\scriptsize\sffamily\bfseries
    },
    pathtext/.style={
      opacity={\shadowopacity/\totshadow},
      shift={({\shadowangle-180}:\shadowdistance)},
      scale={1+\shadowsize}
    },
    pathblur/.style={
      fill=white,
      blur shadow={%
        shadow xshift=0.3pt,
        shadow yshift=-0.3pt,
        shadow scale=1,
        shadow blur radius=1.5pt
      }
    }
  ]
  \path [use as bounding box] (-45pt,-45pt) rectangle (45pt,45pt);
  \begin{scope}[even odd rule]
    \path [pathblur] (0,0) circle (26pt) circle (24pt); 
    \path [pathblur] (0,0) circle (41pt) circle (39pt); 
  \end{scope}
  \foreach \nshadow [evaluate=\nshadow as \angshadow using \nshadow/\totshadow*360] in {1,...,\totshadow}{
    \path[pathtext,
      rotate=-90,
      postaction={
        decorate,
        decoration={
          transform={shift=(\angshadow:\shadowspread)},
          text effects along path,
          text effects/every character/.style={text along path},
          text effects/font = {\sffamily\bfseries},
          text align/align=center,
          raise=-7pt, 
          reverse path=true,
          text={VISTO}
        }
      }
    ] (0,0) circle (36pt);}
  \path[
      rotate=-90,
      postaction={
        decorate,
        decoration={
          text effects along path,
          text effects/every character/.style={text along path},
          text effects/font = {\sffamily\bfseries},
          text align/align=center,
          raise=-7pt, 
          reverse path=true,
          text effects/color=white,
          text={VISTO}
        }
      }
    ] (0,0) circle (36pt);
  \foreach \nshadow [evaluate=\nshadow as \angshadow using \nshadow/\totshadow*360] in {1,...,\totshadow}{
    \path[pathtext,
      rotate=90,
      postaction={
        decorate,
        decoration={
          transform={shift=(\angshadow:\shadowspread)},
          text effects along path,
          text effects/every character/.style={text along path},
          text effects/font = {\sffamily\bfseries},
          text align/align=center,
          text={NON APPROVATO}
        }
      }
    ] (0,0) circle (36pt);}
  \path[
      rotate=90,
      postaction={
        decorate,
        decoration={
          text effects along path,
          text effects/every character/.style={text along path},
          text effects/font = {\sffamily\bfseries},
          text align/align=center,
          text effects/color=white,
          text={NON APPROVATO}
        }
      }
    ] (0,0) circle (36pt);
  \path[pathtext]
    foreach \nshadow [evaluate=\nshadow as \angshadow using \nshadow/\totshadow*360] in {1,...,\totshadow}
      {node [datetime] at (\angshadow:\shadowspread) {\DTMtoday\\\DTMcurrenttime}};
  \node [datetime, text=white] {\DTMtoday\\\DTMcurrenttime};
  \path [pathblur] (25:32.5pt) circle (2pt); 
  \path [pathblur] (155:32.5pt) circle (2pt); 
\end{tikzpicture}
\end{document}