diff --git a/doc/bugs/fails_to_authenticate_into_S3_for_initremote__63__/comment_2_05bc083421a4ba56951315d24e4a7c96._comment b/doc/bugs/fails_to_authenticate_into_S3_for_initremote__63__/comment_2_05bc083421a4ba56951315d24e4a7c96._comment
new file mode 100644
index 0000000000..59e582842f
--- /dev/null
+++ b/doc/bugs/fails_to_authenticate_into_S3_for_initremote__63__/comment_2_05bc083421a4ba56951315d24e4a7c96._comment
@@ -0,0 +1,23 @@
+[[!comment format=mdwn
+ username="yarikoptic"
+ avatar="http://cdn.libravatar.org/avatar/f11e9c84cb18d26a1748c33b48c924b4"
+ subject="comment 2"
+ date="2025-07-31T19:07:57Z"
+ content="""
+- adding `signature=v4` brought a different error which mentioned `s3ErrorMessage = \"The authorization header is malformed; the region 'us-east-1' is wrong; expecting 'us-east-2'\"`
+- adding `region=us-east-2` while running older `10.20241031-1~ndall+1` version of git-annex seems resulted in no change
+- running newer `10.20250721-g8867e7590a3a70afa8a93d2fefab94adc9a176d0` installed from pypi seems took that into account and worked
+
+```
+(venv-annex) dandi@drogon:/mnt/backup/dandi/tmp/dandisets/test-importtree-s3$ git annex initremote s3-origin type=S3 importtree=yes encryption=none autoenable=true bucket=dandiarchive fileprefix=zarr-checksums/2ac71edb-738c-40ac-bd8c-8ca985adaa12/ signature=v4 region=us-east-2
+initremote s3-origin (checking bucket...) ok
+(recording state in git...)
+```
+
+and then `import` worked.
+
+- couldn't it figure out which signature to use?
+- it definitely could/should retry automagically with a correct zone or even start with it
+
+
+"""]]
diff --git a/doc/install/comment_10_484a35a4739e8168019668aaf474bae9._comment b/doc/install/comment_10_484a35a4739e8168019668aaf474bae9._comment
new file mode 100644
index 0000000000..0457f11cbb
--- /dev/null
+++ b/doc/install/comment_10_484a35a4739e8168019668aaf474bae9._comment
@@ -0,0 +1,28 @@
+[[!comment format=mdwn
+ username="nobodyinperson"
+ avatar="http://cdn.libravatar.org/avatar/736a41cd4988ede057bae805d000f4f5"
+ subject="Use an older version e.g. from archive.org"
+ date="2025-07-30T16:17:44Z"
+ content="""
+This happens sometimes and will eventually get fixed when joey notices it. Currently the binary is only on his laptop apparently.
+
+You can use an older version which is eventually available on archive.org:
+
+[[!format  bash \"\"\"
+yann in yann-desktop-nixos in …/OSX/current/10.15_Catalina on  master took 2s123ms 
+🐟 ❯ git co d8a7d5d54d24d17810f07c0756e7334e998650fe
+HEAD ist jetzt bei d8a7d5d54d publishing git-annex 10.20250630 10.20250606
+yann in yann-desktop-nixos in …/OSX/current/10.15_Catalina on  HEAD (d8a7d5d) 
+🐟 ❯ git annex whereis
+whereis git-annex.dmg (1 copy) 
+  	5dc2ccd1-e534-4dae-8e8c-f31c8015e26e -- archive.org via S3
+
+  The following untrusted locations may also have copies:
+  	00000000-0000-0000-0000-000000000001 -- web
+
+  web: http://archive.org/download/git-annex-builds/SHA256E-s28610967--7fc0dbf3f0a1f275a95730899327694b90dcd60c4ba8d8070a3efde44983a719.dmg
+ok
+\"\"\"]]
+
+So for example [this link](http://archive.org/download/git-annex-builds/SHA256E-s28610967--7fc0dbf3f0a1f275a95730899327694b90dcd60c4ba8d8070a3efde44983a719.dmg):
+"""]]
diff --git a/doc/install/comment_9_a17ccf32e2e450b2b744f11a1c5edc8c._comment b/doc/install/comment_9_a17ccf32e2e450b2b744f11a1c5edc8c._comment
new file mode 100644
index 0000000000..e5bd2b3b47
--- /dev/null
+++ b/doc/install/comment_9_a17ccf32e2e450b2b744f11a1c5edc8c._comment
@@ -0,0 +1,8 @@
+[[!comment format=mdwn
+ username="h0b0"
+ avatar="http://cdn.libravatar.org/avatar/bf8483b4623b379c3443d63ecdff22a2"
+ subject="Cataline build missing"
+ date="2025-07-30T15:19:06Z"
+ content="""
+Somehow [the Catalina binary got lost](https://downloads.kitenet.net/git-annex/OSX/current/10.15_Catalina/). Considering that homebrew also fails due to the old OS this is a problem. I'd be happy if this was made available again.
+"""]]
diff --git a/doc/videos/tdf4-life-in-git-annex.mdwn b/doc/videos/tdf4-life-in-git-annex.mdwn
new file mode 100644
index 0000000000..b46ba97547
--- /dev/null
+++ b/doc/videos/tdf4-life-in-git-annex.mdwn
@@ -0,0 +1,6 @@
+Yann Büchau's (German) talk „Das Leben in Git (Annex)” („Life in Git (Annex)”) at the [Tage der Digitalen Freiheit](https://tdf.cttue.de/) in Tübingen, Germany:
+
+- [on media.ccc.de](https://media.ccc.de/v/tdf4-26-das-leben-in-git-annex-)
+
+[[!meta date="26 Jul 2025"]]
+[[!meta title="'life in git annex' talk by Yann Büchau at TdF2025"]]