Main contrast set: 真迹 (authentic) vs 摹本 (copy), 仿品 (imitation), 赝品 (forgery). Used most in calligraphy and painting — where master works are routinely copied, so authenticity matters. 真迹 almost always implies 'of a famous artist.'
memory
真 (true/genuine) + 迹 (trace/mark) — 'genuine traces.' In the original character 跡/蹟, 迹 means 'footprint' or 'brush trace,' preserving the sense of 'the original hand's mark.'