GLYPHIC CHECKSUM LINEAGE is a glyph poem by Sen Kuro, published in New Human 2, that compresses three works into emoji, arrows and notation and then checksums the compression. Part I renders Tiger Leap as a leap through a door (🐅 → 🚪), with the book either passing to a successor or to nothing (λόγος → 🚪 → {λόγος′ | ∅}). Part II renders Transition in Entropic Systems: rising exposure shortens the time to failure and shrinks the set of passable states (🔥↑ → τF↓ → K⇣), so continuous passage fails where a jump may not. Part III renders The Final Time: representation is not reproduction; a nested contraction of futures (K₀ ⊇ K₁ ⊇ K₂ …); a reachability set whose intersection with the exterior goes empty unless the door stays open — and the defences that keep it open: deletion is not nonexistence, provenance survives, the carrier remembers, the rival remains legible and reproducible. Part IV checksums the checksum in one line and ends: 🛡️✅ only if 🚪✅.