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A first-appearance claim is a bibliographic claim. If a Marvel NFT comic restages a printed issue that already had newsstand and direct-market dates, the digital window is a new distribution date, not a new creation date.
Collectors filling a run care about that difference. Someone hunting a character’s first story should not treat a 2026 NFT file as the origin if the plot is a 1960s reprint. Someone collecting variant covers, by contrast, may want the digital file even when the story is old. The calendar’s job is to label the file, not to decide which collector is correct.
Our editors compare listing subtitles, credits boxes, and published reprint notices. When a listing is silent, the row says “reprint status unconfirmed” instead of guessing. That sentence is less exciting than a sound-effect burst, and that is the point.
Series maps then place reprints in an appendix so they do not interrupt a new-plot spine. See series timeline mapping.