diff --git a/packages/cultnet-rs/examples/idunn_runtime_fixture.rs b/packages/cultnet-rs/examples/idunn_runtime_fixture.rs
index 185f9a4e..d6b432a6 100644
--- a/packages/cultnet-rs/examples/idunn_runtime_fixture.rs
+++ b/packages/cultnet-rs/examples/idunn_runtime_fixture.rs
@@ -157,7 +157,7 @@ fn build(
                 provider_id: Some("odin".into()),
                 provider_authority: Some("managed-incarnation".into()),
                 provider_expected_projection_sha256: Some(digest('5')),
-                provider_endpoint: Some("rudp://127.0.0.1:17871".into()),
+                provider_endpoint: Some("rudp://127.0.0.1:47871".into()),
             }]
         } else {
             Vec::new()
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/.gitattributes b/packages/cultnet-ts/test/fixtures/idunn-runtime/.gitattributes
new file mode 100644
index 00000000..fa1385d9
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/.gitattributes
@@ -0,0 +1 @@
+* -text
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/README.md b/packages/cultnet-ts/test/fixtures/idunn-runtime/README.md
new file mode 100644
index 00000000..99e7b07f
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/README.md
@@ -0,0 +1,15 @@
+# Idunn runtime fixtures
+
+Written by the Rust owner, not by the TypeScript tests. Regenerate with
+`packages/cultnet-rs/examples/idunn_runtime_fixture.rs` (CultLib `f5c597a`; it uses
+cultnet-rs only, and Idunn's `IdunnRuntimeActivationLaunch` is that same crate's).
+It needs Linux and a machine-id equal to the `machine-id` file here, because the
+provider identity is bound to it. On Yggdrasil:
+
+    DOCKER_ARGS='--cap-add SYS_ADMIN --security-opt apparmor=unconfined'     bash ygg-verify.sh <CultLib> HEAD rust 'cd packages/cultnet-rs &&       cp <fixed-machine-id> /tmp/mid && mount --bind /tmp/mid /etc/machine-id &&       cargo run -q --example idunn_runtime_fixture /tmp/out'
+
+then copy `/tmp/out` over this directory. Every `presence-*.bin` was accepted by
+`authenticate_runtime_presence_claim` and correlated by
+`correlate_runtime_presence_claim` before being written; the
+`below-minimum` vector correlates to exactly `expected-capability-000-capacity`.
+Ed25519 is deterministic, so the TypeScript signer must reproduce them byte for byte.
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/machine-id b/packages/cultnet-ts/test/fixtures/idunn-runtime/machine-id
new file mode 100644
index 00000000..a71716fc
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/machine-id
@@ -0,0 +1 @@
+c1c1c1c1c1c1c1c1c1c1c1c1c1c1c1c1
\ No newline at end of file
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/activation-key.seed b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/activation-key.seed
new file mode 100644
index 00000000..ddaffdda
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/activation-key.seed
@@ -0,0 +1,2 @@
+
+��V�H�\IJ����
Ȉ{�^�+l�Z�}k�
\ No newline at end of file
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/activation.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/activation.cc
new file mode 100644
index 00000000..556e8a17
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/expected.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/expected.cc
new file mode 100644
index 00000000..e546f849
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/presence-active.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/presence-active.bin
new file mode 100644
index 00000000..13a93f55
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/presence-warming.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/presence-warming.bin
new file mode 100644
index 00000000..1211a605
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/provider-identity.credential b/packages/cultnet-ts/test/fixtures/idunn-runtime/rudp-route/provider-identity.credential
new file mode 100644
index 00000000..be91ad0c
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/activation-key.seed b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/activation-key.seed
new file mode 100644
index 00000000..06b4b38e
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/activation-key.seed
@@ -0,0 +1 @@
+�W�ck1�T
����[�^ka�$}R%.\ږ��k2
\ No newline at end of file
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/activation.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/activation.cc
new file mode 100644
index 00000000..9ab8bf43
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/expected.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/expected.cc
new file mode 100644
index 00000000..665a8637
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-active-below-minimum.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-active-below-minimum.bin
new file mode 100644
index 00000000..ed6f48b9
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-active.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-active.bin
new file mode 100644
index 00000000..f9bb5d18
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-warming.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/presence-warming.bin
new file mode 100644
index 00000000..62b7ff86
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/service/provider-identity.credential b/packages/cultnet-ts/test/fixtures/idunn-runtime/service/provider-identity.credential
new file mode 100644
index 00000000..45db9617
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/activation-key.seed b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/activation-key.seed
new file mode 100644
index 00000000..beacd869
--- /dev/null
+++ b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/activation-key.seed
@@ -0,0 +1 @@
+�[�`u���"���n>/W��W;�s�S�2��4
\ No newline at end of file
diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/activation.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/activation.cc
new file mode 100644
index 00000000..6127df72
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/expected.cc b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/expected.cc
new file mode 100644
index 00000000..0b02a2e8
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/presence-active.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/presence-active.bin
new file mode 100644
index 00000000..15ae2e8c
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/presence-warming.bin b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/presence-warming.bin
new file mode 100644
index 00000000..1d106eb5
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diff --git a/packages/cultnet-ts/test/fixtures/idunn-runtime/web/provider-identity.credential b/packages/cultnet-ts/test/fixtures/idunn-runtime/web/provider-identity.credential
new file mode 100644
index 00000000..baff802e
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