diff --git a/data/23/events/ethprague/data.json b/data/23/events/ethprague/data.json
index 987e49b..4ab1bca 100644
--- a/data/23/events/ethprague/data.json
+++ b/data/23/events/ethprague/data.json
@@ -147,13 +147,6 @@
       "country": "za",
       "photo": "photos/speakers/cryptowanderer.jpeg"
     },
-    {
-      "id": "csaba-kiraly",
-      "name": "Csaba Kiraly ",
-      "caption": "status.im",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/2s8D1OYaxMPLTHWvkme83o/20ebe70db8a6c73185bfda92e4aa7c6c/self_bOMmCTf.jpeg",
-      "photo": "photos/speakers/csaba-kiraly.jpeg"
-    },
     {
       "id": "daniel",
       "name": "Daniel",
@@ -594,14 +587,6 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/2rpJH86k7DA7Se42QbU13R/7fc1cfe5cd76671ac6f6e89a881dba4d/IMG_20190308_110924_lESkR3X.jpg",
       "photo": "photos/speakers/ole-ersson.jpg"
     },
-    {
-      "id": "osho-jha",
-      "name": "Osho Jha",
-      "twitter": "CryptoBroShoNYC",
-      "caption": "dClimate",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/1fkMUIHNjF5cPKRrm3qVk1/494958de1b350ff7b8d927de0f17a76b/Osho_headshot_BW_VjN7fkO.jpg",
-      "photo": "photos/speakers/osho-jha.jpg"
-    },
     {
       "id": "owen-barnes",
       "name": "Owen Barnes ",
@@ -610,6 +595,13 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/5tsXsqJCPFXTjmyAivjSoa/aeb2dda96e390bf3bb39574065c0af2b/me_Kw99m5f.jpg",
       "photo": "photos/speakers/owen-barnes.jpg"
     },
+    {
+      "id": "paul-cadman",
+      "name": "Paul Cadman",
+      "caption": "Heliax",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/4mrErrWBLwBr4XGfh1Dud3/7a4e71ce89c99dfa7e13dfd95cb19fc1/67BDC0A9-E91A-4F0C-8CCA-B8B075A0C479.jpeg",
+      "photo": "photos/speakers/paul-cadman.jpeg"
+    },
     {
       "id": "paul-gadi",
       "name": "Paul Gadi ",
@@ -717,6 +709,14 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/1IpzXhtWmf5SFmhtWt2UXT/59728acfb40e821b43786d5be3eb2395/ofe3s9UI_400x400.jpg",
       "photo": "photos/speakers/schmiddominik.jpg"
     },
+    {
+      "id": "shayan-eskandari",
+      "name": "Shayan Eskandari",
+      "twitter": "sbetamc",
+      "caption": "Concordia University",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/3tXiKa0YYHyu6DUIGBVTID/bcc0733c7de35f29f7626cbb7a35bfc3/9C800F25-D4DD-47F1-A00C-FA57E9718C60.jpeg",
+      "photo": "photos/speakers/shayan-eskandari.jpeg"
+    },
     {
       "id": "shayan-eskandari",
       "name": " Shayan Eskandari",
@@ -808,6 +808,13 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/5fcBu1QuRXiIeVIQDD4LTx/4f60e083fd5ce52317d4d5fd9f18c584/Screenshot_2023-05-09_at_11.11.43.png",
       "country": "tr",
       "photo": "photos/speakers/zeynep-ecenaz-altınok.png"
+    },
+    {
+      "id": "łukasz-czajka",
+      "name": "Łukasz Czajka",
+      "caption": "Heliax",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/5wTWQ3eO5BWzMSXj4L69Rv/8e6273089cfbdcd621e358d3b0404c3f/DAAFBDFF-5AC8-47F5-88C2-E9173F383EE6.jpeg",
+      "photo": "photos/speakers/łukasz-czajka.jpeg"
     }
   ]
 }
\ No newline at end of file
diff --git a/data/23/events/ethprague/photos/speakers/paul-cadman-150px.op.webp b/data/23/events/ethprague/photos/speakers/paul-cadman-150px.op.webp
new file mode 100644
index 0000000..16a2d20
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/paul-cadman-150px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/paul-cadman-300px.op.webp b/data/23/events/ethprague/photos/speakers/paul-cadman-300px.op.webp
new file mode 100644
index 0000000..9f5bc33
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/paul-cadman-300px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/paul-cadman-500px.op.webp b/data/23/events/ethprague/photos/speakers/paul-cadman-500px.op.webp
new file mode 100644
index 0000000..639fcd9
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/paul-cadman-500px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/paul-cadman.jpeg b/data/23/events/ethprague/photos/speakers/paul-cadman.jpeg
new file mode 100644
index 0000000..5a70372
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/paul-cadman.jpeg differ
diff --git a/data/23/events/ethprague/photos/speakers/paul-cadman.op.webp b/data/23/events/ethprague/photos/speakers/paul-cadman.op.webp
new file mode 100644
index 0000000..96d7155
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/paul-cadman.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/łukasz-czajka-150px.op.webp b/data/23/events/ethprague/photos/speakers/łukasz-czajka-150px.op.webp
new file mode 100644
index 0000000..f92f058
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/łukasz-czajka-150px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/łukasz-czajka-300px.op.webp b/data/23/events/ethprague/photos/speakers/łukasz-czajka-300px.op.webp
new file mode 100644
index 0000000..d3efb37
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/łukasz-czajka-300px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/łukasz-czajka-500px.op.webp b/data/23/events/ethprague/photos/speakers/łukasz-czajka-500px.op.webp
new file mode 100644
index 0000000..01a8fbe
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/łukasz-czajka-500px.op.webp differ
diff --git a/data/23/events/ethprague/photos/speakers/łukasz-czajka.jpeg b/data/23/events/ethprague/photos/speakers/łukasz-czajka.jpeg
new file mode 100644
index 0000000..6b633d0
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/łukasz-czajka.jpeg differ
diff --git a/data/23/events/ethprague/photos/speakers/łukasz-czajka.op.webp b/data/23/events/ethprague/photos/speakers/łukasz-czajka.op.webp
new file mode 100644
index 0000000..65f4b94
Binary files /dev/null and b/data/23/events/ethprague/photos/speakers/łukasz-czajka.op.webp differ