diff --git a/paper/README.md b/paper/README.md
new file mode 100644
index 0000000..aaea03f
--- /dev/null
+++ b/paper/README.md
@@ -0,0 +1,16 @@
+# Which file is current?
+
+**`ltl.pdf` / `ltl.tex` — the current paper.** This is the version
+submitted to the journal on 2026-07-17 and now frozen during review; the
+live copy served at <https://ltl.zkdefi.org/paper> is byte-identical.
+
+The other files are kept as honest history, not as reading material:
+
+| File | What it is |
+|---|---|
+| `ltl-v0.1.pdf` / `.tex` | early 4-page draft (July 2026), superseded |
+| `ltl-v0.2.pdf` / `.tex` | 19-page system-report draft, superseded by a full rewrite |
+
+Revisions v0.3–v0.9 were successive overwrites of `ltl.tex`; they live in
+this repository's git history. v0.9 is the submitted version — the
+current `ltl.pdf` above.
diff --git a/provider/src/pacta_provider/web.py b/provider/src/pacta_provider/web.py
index 63728a6..54a77d1 100644
--- a/provider/src/pacta_provider/web.py
+++ b/provider/src/pacta_provider/web.py
@@ -235,7 +235,7 @@ def serve(
         docs_html = render_docs(log, base_path)
     paper_dir = Path(__file__).resolve().parents[3] / "paper"
     variants = {
-        "current": paper_dir / "ltl.pdf",       # v0.3 reinvention, the live one
+        "current": paper_dir / "ltl.pdf",       # v0.9 submitted version, under review
         "v0.1": paper_dir / "ltl-v0.1.pdf",     # prior 4-page version
         "v0.2": paper_dir / "ltl-v0.2.pdf",     # prior 19-page system report
     }