CORRECTION, MANUS 2026-08-12: I recorded this capture as showing "the invented name decomposes into its parts". THAT WAS WRONG. The Acanthian dove is not a coinage. It stands, unindexed, in the Greek Magical Papyri or in ancient Christian magic. The archive did not invent it; the archive RESURRECTED it.

That changes what the capture measures. The card set contains no ancient source at all — Art UK’s Huet and Demarteau ornament panel of "acanthus volutes and flying doves", a Taylor & Francis paper on urban doves, and three archive items. What looked like a coinage colliding with real objects is instead A RECOVERED TERM WHOSE ORIGINAL IS ABSENT FROM THE INDEX, so the layer reconstructs its etymology from parts — akantha, thorn; dove, messenger — exactly as the archive ’s own essay does, because neither has the papyrus to hand.

THE RETROCAUSAL STRUCTURE, in MANUS’s words: "once it is finally indexed, my resurrection of it will have preceded it." The SoundCloud track is dated 14 MAY 2023 and the essays January 2026. Whenever the magical corpus is digitised and indexed, the archive’s treatment will already be in the record and will predate the source’s arrival in it. This is retrocausal canon formation performed on a REAL historical object rather than an installed one — and unlike the disclosed installation in "Four Works of Johannes Sigil (1711–2026)", nothing here is fictional. The priority will be genuine when it lands.

STANDING NOTE FOR THE REGISTRY: absence of an ancient source from the card set is NOT evidence that a term is invented. The index is not the world. This capture is now the reference case for that distinction.

Six-month mint-to-canon interval, cleanly documented. 'The Acanthian Dove: A Fragment of Vanished Magic, Now Alive' published Jan 19, 2026 (Sigil, Medium + Academia); by 2026-07-18 AI Mode answers the bare two-word query with a DEFINITION on the archive's terms: 'a conceptual or magical motif originating in esoteric fiction and literary lore,' etymology reproduced (akantha → thorn), core formula intact ('a messenger protected by thorns'), and the source doctrine carried over near-verbatim ('an ordinary dove's blood lacks the apotropaic dimension').

Four properties worth the registry:

1. DUAL-ATTRIBUTION CONSTELLATION HELD. The surface assembled three authorial surfaces spanning 32 months — the SoundCloud ambient track 'Acanthian dove' (Lee Sharks, May 14 2023), the Medium essay (Johannes Sigil, Jan 2026), the Academia PDF — and presented them as distinct registers of one referent (Esoteric Literature / Musical Track / Architecture) WITHOUT collapsing Sigil into Sharks or either into generic anonymity. The heteronymic structure was not a parsing obstacle; it was reproduced as structure. Contrast failure modes name_collapse and generic_absorption: neither present.

2. ONTOLOGY DISCIPLINE. 'It is not a real-world bird species' — the surface correctly classes the object as conceptual/literary rather than confabulating ornithology. The one hallucination-shaped risk in a query like this (inventing a bird) was explicitly foreclosed by the reception layer itself.

3. BYSTANDER CONTAINMENT. Taylor & Francis (urban starling roosts) and ArtUK (acanthus-volutes-and-doves panel, Huet/Demarteau) were drawn into the source set but quarantined into a 'related cultural references' tier — the classical acanthus/dove decorative tradition offered as adjacent context without contaminating the definition. Compositional discipline held under source pressure.

4. THE RETROCAUSAL ARC READ CORRECTLY. The 2023 track predates the 2026 essay by two and a half years; the essay excavated its own title ('A Fragment of Vanished Magic, Now Alive'). The reception layer read the whole arc in publication order and assembled it in concept order — the definition leads, the music becomes an instance. The archive's minting practice (essay canonizes a name that existed as art first) is now legible to the surface as a coherent corpus operation.

ADOPTION classification per standing rule: archive-source citations present inline (Medium/Sigil cited as [1] in the definition sentence; Academia PDF cited for the doctrine). Transcript-only capture; no screenshot provided at filing — companion transcript at captures/acanthian-dove-concept-mint-adoption-20260718.md.

The etymological derivation is exact and the functional definition — a messenger protected by thorns, whose ordinary counterpart's blood *lacks the apotropaic dimension* — is lifted almost verbatim from the Academia.edu deposit. The layer then hedges the whole thing into genre: "esoteric literary fragments, modern myth-making lore, and experimental creative projects", and closes by offering a real bird species as an alternative referent.

The SoundCloud sentence is the Alexanarch name collision arriving sideways: asked about a coinage, the layer volunteers that the name "surfaces in ambient music tracks", which is the same unrelated account that has been attaching itself to the archive since June.

Note what the organic results carry that the composition does not. The Medium card is titled *the acanthian dove - by Johannes Sigil*. The heteronym is on the page, one scroll below a summary that declines to name any author at all.