diff --git a/src/notes/research/c2pa/peripheral_literature.md b/src/notes/research/c2pa/peripheral_literature.md
index 8698bf4..c2d180f 100644
--- a/src/notes/research/c2pa/peripheral_literature.md
+++ b/src/notes/research/c2pa/peripheral_literature.md
@@ -44,6 +44,14 @@
         - LinkedIn shows "CR" watermark by images with C2PA
         - use "synthetic media detectors" when C2PA is missing
         - technically not verify, but know signer
+- [Use of C2PA in real-world workflows](https://youtu.be/KdbP0xcWcoM),
+    Brendan Quinn, Jay Li, David Beaulieu, Jonathan Dupras, Nigel Earnshaw,
+    Charlie Halford, Gavin Peacock, Pia Blumenthal,
+    IPTC Photo Metadata Conference 2022
+    - Azure Media Services use C2PA during video encoding
+        (unclear what exactly)
+    - CBC/Radio-Canada use C2PA for news
+    - BBC JavaScript library to edit/show C2PA
 
 ## C2PA implementation
 
diff --git a/src/notes/research/photo_crypto_auth.md b/src/notes/research/photo_crypto_auth.md
index 2694423..5e9ef69 100644
--- a/src/notes/research/photo_crypto_auth.md
+++ b/src/notes/research/photo_crypto_auth.md
@@ -93,6 +93,7 @@ manipulative post go viral. good for news. need to balance privacy
     - research proof
 - [ ] figure out concrete use case
 - vision: want C2PA be like TLS
+    - "three-legged approach": C2PA, watermark, fingerprint
     - need phone to do C2PA; doable similarly to Apple Pay
     - provider companies charging high margin hinder adoption
         - **build open-source solution for mobile?**