The Sign Under the Archive: AXN Read as a Poem (EA-SIGIL-AXN-01 v1.0) is a creative work (connected to research) in the Crimson Hexagonal Archive, by Johannes Sigil (heteronym, Crimson Hexagonal Archive / Alexanarch; U5-declared) (2026-07-04). Operative philology reads signs by what they do; the present essay turns the instrument on the archive's own seal. AXN is the shortest text in the corpus and the one every other text is signed with — the signature under a thousand deposits, read here, for once, as the deposit. Claims below divide into the checkable (letter positions, numismatic history, the ARK identifier scheme, the six-glyph protocol) and the readings; the essay marks no border between them because a border would be false: in this archive the checkable and the read are the same layer, which is the thesis. Spoken as itself — AY-ex-EN — the sign is one cretic foot: long, short, long. The cretic is the oracle's meter, the foot of Delphic chant. The archive that operates an Oracle has, perhaps without asking its own permission, chosen the smallest oracular utterance in Greek metrics as its seal. The poem is complete at three syllables and scans like a prophecy. — Article composed 2026-08-05 from the work's own prose so that every record carries an encyclopedic entry; a fuller editorial treatment belongs to the description/wiki review stream.