Have you ever tried to envision the unseen programs defending the firewall era? The artist @martnbruc brings this fascinating concept to life in the CORTAFUEGOS project. This collection comprises a total of six GIF illustrations that offer a striking visual contrast, setting vibrant colors against a backdrop of gray, grainy smoke. Throughout the pieces, abstract structures and rectangular brushstrokes appear to be built entirely without calculation, beautifully mirroring the historic bricks of a Gothic castle. For those interested in acquiring a piece from this series, the minimum bid is set at 0.1 ETH.