diff --git a/docs/bootstrap-semantic-parity.md b/docs/bootstrap-semantic-parity.md
index 79c8fed..c9da07a 100644
--- a/docs/bootstrap-semantic-parity.md
+++ b/docs/bootstrap-semantic-parity.md
@@ -3,9 +3,29 @@
 Reference:
 
 - upstream Jetstream `f29815c391fc2644f8a3dd36b899fb3697dd1ea6`
-- Atmos `v0.2.14`
-- Stream `a345f4054df568e364aff08a9b1726275fc48e29` plus the discovery
-  changes and audit updates in this commit
+- Atmos `v0.2.14` (the Go atproto library upstream runs, not a Stream
+  dependency)
+- Stream: **the recorded basis hash is unresolvable — see below.**
+
+> **The Stream basis cannot be located.** This file named Stream
+> `a345f4054df568e364aff08a9b1726275fc48e29` "plus the discovery changes and
+> audit updates in this commit". That object does not exist in this repository
+> (`git cat-file` cannot resolve it, and no ref contains it), so the basis is not
+> reproducible. The trailing "in this commit" was also self-referential: read at
+> any later commit, it names nothing.
+>
+> What is actually knowable: this file's own history. It was last substantively
+> updated by `4f15a19` (2026-07-25, *"adopt upstream's subsystem vocabulary, and
+> fix two rotted audits"*) — so treat that as the real basis and
+> `git log -- docs/bootstrap-semantic-parity.md` as the authority. For contrast,
+> experiment 6 deployed `29705cb`, and `semantic-parity.md` is based on
+> `eb95c14`; neither matches this file.
+>
+> The hash is deliberately **not** replaced with a plausible one. Substituting a
+> commit nobody audited would launder an unknown into a citation, which is the
+> failure `semantic-parity.md` opens by forbidding. Re-basing this audit is its
+> own deliberate act. Note the title of `4f15a19`: these audits have rotted
+> before.
 
 The status words have the meanings defined in
 [semantic-parity.md](semantic-parity.md). A configuration knob being wired