XPAY KNOWLEDGE

Industry WIKI

Digital assets and currencies

Understand assets, networks and trading mechanics with sources you can check.

René Groebli

René Groebli (sometimes spelt Gröbli; 9 October 1927 – 5 May 2026) was a Swiss exhibiting and published industrial and advertising photographer, known for his expressionistic photo-books, his photojournalism, and photo-illustration, and expertise in dye transfer and colour printing.