A powerful bull head in a tribal tattoo style, facing forward, with a glowing magical brand on its forehead. The brand is a standard, classic capital letter "B" in a bold sans-serif font. The letter B has a straight vertical line on the left and two distinct rounded arches on the right. It must NOT have any diagonal lines crossing the vertical stem. Do NOT make it look like the Bitcoin logo. The bull has a calm but intense gaze, large curved horns. The background is dark, the bull is in shades of charcoal and cream, while the "B" glows in warm amber gold. Minimalist, mystical, square avatar format.
