diff --git a/data/23/events/ethprague/data.json b/data/23/events/ethprague/data.json
index 2928fda..07a6ada 100644
--- a/data/23/events/ethprague/data.json
+++ b/data/23/events/ethprague/data.json
@@ -49,6 +49,14 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/1bAAJBcf6Jyv7mIPuXpIfN/8cca28599c94fc2df2822638bd9442f5/Alex_Holland_SolarPunk_Stories_-_Copy_hSH9ody.png.jpeg",
       "photo": "photos/speakers/alex-holland.jpeg"
     },
+    {
+      "id": "alexei-zamyatin",
+      "name": "Alexei Zamyatin",
+      "twitter": "alexeiZamyatin",
+      "caption": "Interlay",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/3A0PwplUwjOuEbTuR0B9bR/c23e0da427e8ffa8733fb8139d2006d8/alexei_1_lCziUzp-2.jpeg",
+      "photo": "photos/speakers/alexei-zamyatin.jpeg"
+    },
     {
       "id": "amir-taaki",
       "name": "Amir Taaki",
@@ -367,14 +375,6 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/1PiMcbk72G0MgzOcQeiwNg/77636da3121119dcebd1f68663987740/me_fC2aqrl.jpeg",
       "photo": "photos/speakers/jonathan-cubides.jpeg"
     },
-    {
-      "id": "josef-gattermayer",
-      "name": "Josef Gattermayer",
-      "twitter": "jgattermayer",
-      "caption": " Ackee Blockchain",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/31mQ6BlJbPKwt8fEytleew/35c4b1735ac73cd4379e71dffc6de3e1/ceo-cut_WYMKvyu.png",
-      "photo": "photos/speakers/josef-gattermayer.png"
-    },
     {
       "id": "josef-j",
       "name": "Josef J",
diff --git a/data/23/events/gateway/data.json b/data/23/events/gateway/data.json
index 1789f88..3a1fc97 100644
--- a/data/23/events/gateway/data.json
+++ b/data/23/events/gateway/data.json
@@ -3,7 +3,7 @@
     {
       "id": "adam-bilko",
       "name": "Adam Bilko",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uzxrb6-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uzxrb6-image.png?version=1685611811975",
       "caption": "RockawayX Asset Manager",
       "twitter": "Bil_ko",
       "country": "cz",
@@ -12,7 +12,7 @@
     {
       "id": "adi-serendischi",
       "name": "Adi Serendischi",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-v5eumh-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-v5eumh-image.png?version=1685611811975",
       "caption": "Informal Systems Product Lead",
       "twitter": "AdiSeredinschi",
       "photo": "photos/speakers/adi-serendischi.png"
@@ -20,14 +20,14 @@
     {
       "id": "aleksander-kampa",
       "name": "Aleksander Kampa",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yb8wok-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yb8wok-image.png?version=1685611811975",
       "caption": "Aragon ZK Research Director",
       "photo": "photos/speakers/aleksander-kampa.png"
     },
     {
       "id": "ali-merchant",
       "name": "Ali Merchant",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rs8ces-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rs8ces-image.png?version=1685611811975",
       "caption": "Informal Systems Developer Relations Engineer",
       "twitter": "Ali_the_Curios",
       "photo": "photos/speakers/ali-merchant.png"
@@ -35,7 +35,7 @@
     {
       "id": "amos-meiri",
       "name": "Amos Meiri",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-wez1f--image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-wez1f--image.png?version=1685611811975",
       "caption": "Node.Capital Founder & GP",
       "twitter": "amosmeiri",
       "photo": "photos/speakers/amos-meiri.png"
@@ -43,7 +43,7 @@
     {
       "id": "ankur-banerjee",
       "name": "Ankur Banerjee",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-mziwkp-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-mziwkp-image.png?version=1685611811975",
       "caption": "cheqd CTO & Co-Founder",
       "twitter": "ankurb",
       "photo": "photos/speakers/ankur-banerjee.png"
@@ -51,7 +51,7 @@
     {
       "id": "avril-dutheil",
       "name": "Avril Dutheil",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-muxwg4-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-muxwg4-image.png?version=1685611811975",
       "caption": "Neutron General Manager",
       "twitter": "0xSpaydh",
       "photo": "photos/speakers/avril-dutheil.png"
@@ -59,7 +59,7 @@
     {
       "id": "barry-kuts",
       "name": "Barry Kuts",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ozmwkx-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ozmwkx-image.png?version=1685611811975",
       "caption": "DymensionXYZ Head of Product & Research",
       "twitter": "shaolin_flow",
       "photo": "photos/speakers/barry-kuts.png"
@@ -67,7 +67,7 @@
     {
       "id": "bea-o’carroll",
       "name": "Bea O’Carroll",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hnhtty-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hnhtty-image.png?version=1685611811975",
       "caption": "MPCH / Fraction Managing Director",
       "twitter": "beezuso",
       "photo": "photos/speakers/bea-o’carroll.png"
@@ -75,7 +75,7 @@
     {
       "id": "bo-du",
       "name": "Bo Du",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-bmwaje-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-bmwaje-image.png?version=1685611811975",
       "caption": "Polymer Labs Co-Founder",
       "twitter": "0xshake",
       "photo": "photos/speakers/bo-du.png"
@@ -83,22 +83,14 @@
     {
       "id": "callum-waters",
       "name": "Callum Waters",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ex4epd-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ex4epd-image.png?version=1685611811975",
       "caption": "Celestia Labs Software Engineer",
       "photo": "photos/speakers/callum-waters.png"
     },
-    {
-      "id": "camila-ramos-garzon",
-      "name": "Cami Ramos",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-qoaeec-image.png?version=1685355161577",
-      "caption": "RISC Zero Head of Developer Relations",
-      "twitter": "camiinthisthang",
-      "photo": "photos/speakers/camila-ramos-garzon.png"
-    },
     {
       "id": "david-graf",
       "name": "David Graf",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-reu_jn-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-reu_jn-image.png?version=1685611811975",
       "caption": "White Whale CTO",
       "twitter": "0xSenCom",
       "photo": "photos/speakers/david-graf.png"
@@ -106,7 +98,7 @@
     {
       "id": "dawid-rylski",
       "name": "Dawid Rylski",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-3xgbwv-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-3xgbwv-image.png?version=1685611811975",
       "caption": "RockawayX Principal",
       "twitter": "RylskiDawid",
       "photo": "photos/speakers/dawid-rylski.png"
@@ -114,7 +106,7 @@
     {
       "id": "dean-tribble",
       "name": "Dean Tribble",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hu9osm-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hu9osm-image.png?version=1685611811975",
       "caption": "Agoric Co-Founder",
       "twitter": "deantribble",
       "country": "us",
@@ -123,7 +115,7 @@
     {
       "id": "diego-lizarazo",
       "name": "Diego Lizarazo",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-xkivqf-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-xkivqf-image.png?version=1685611811975",
       "caption": "Agoric Developer Relations Professional",
       "twitter": "hielo777",
       "photo": "photos/speakers/diego-lizarazo.png"
@@ -131,7 +123,7 @@
     {
       "id": "dominik-skrobacz",
       "name": "Dominik Skrobacz",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-pxuhcz-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-pxuhcz-image.png?version=1685611811975",
       "caption": "Chain4Energy CEO",
       "twitter": "DSkrobacz",
       "photo": "photos/speakers/dominik-skrobacz.png"
@@ -139,7 +131,7 @@
     {
       "id": "dougie-deluca",
       "name": "Dougie DeLuca",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-orxg4j-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-orxg4j-image.png?version=1685611811975",
       "caption": "Figment Capital Investor",
       "twitter": "DougieDeLuca",
       "photo": "photos/speakers/dougie-deluca.png"
@@ -147,7 +139,7 @@
     {
       "id": "eshel-bar-meir",
       "name": "Eshel Bar Meir",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cjcsag-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cjcsag-image.png?version=1685611811975",
       "caption": "Secret Labs Secret Contract Developer",
       "twitter": "e_bar_meir",
       "photo": "photos/speakers/eshel-bar-meir.png"
@@ -155,7 +147,7 @@
     {
       "id": "federico-kunze-kullmer",
       "name": "Federico Kunze Küllmer",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cjegiw-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cjegiw-image.png?version=1685611811975",
       "caption": "Evmos Co-Founder & Director",
       "twitter": "fekunze",
       "country": "de",
@@ -164,7 +156,7 @@
     {
       "id": "fig",
       "name": "Fig",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-e9mztv-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-e9mztv-image.png?version=1685611811975",
       "caption": "Squid Co-Founder",
       "twitter": "ecdsafu",
       "photo": "photos/speakers/fig.png"
@@ -172,7 +164,7 @@
     {
       "id": "filip-siroky",
       "name": "Filip Siroky",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-lpw6xh-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-lpw6xh-image.png?version=1685611811975",
       "caption": "RockawayX Research",
       "twitter": "fisiroky",
       "country": "cz",
@@ -181,7 +173,7 @@
     {
       "id": "finch",
       "name": "Finch",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-dwclct-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-dwclct-image.png?version=1685611811975",
       "caption": "Penumbra Labs Core Engineer",
       "twitter": "plaidfinch",
       "photo": "photos/speakers/finch.png"
@@ -189,7 +181,7 @@
     {
       "id": "frank-chaparro",
       "name": "Frank Chaparro",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rsty9t-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rsty9t-image.png?version=1685611811975",
       "caption": "The Block Crypto Reporter",
       "twitter": "fintechfrank",
       "photo": "photos/speakers/frank-chaparro.png"
@@ -197,7 +189,7 @@
     {
       "id": "frans-scholten",
       "name": "Frans Scholten",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-pbxnjo-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-pbxnjo-image.png?version=1685611811975",
       "caption": "Flow Traders Investor",
       "twitter": "FransScholten",
       "photo": "photos/speakers/frans-scholten.png"
@@ -205,7 +197,7 @@
     {
       "id": "gabe-rodriguez",
       "name": "Gabe Rodriguez",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cqpnrb-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cqpnrb-image.png?version=1685611811975",
       "caption": "Delphi Labs Lead Developer",
       "twitter": "grod220",
       "photo": "photos/speakers/gabe-rodriguez.png"
@@ -213,7 +205,7 @@
     {
       "id": "guy-zyskind",
       "name": "Guy Zyskind",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ylldpf-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ylldpf-image.png?version=1685611811975",
       "caption": "Secret Founder",
       "twitter": "GuyZys",
       "photo": "photos/speakers/guy-zyskind.png"
@@ -221,7 +213,7 @@
     {
       "id": "hao-zheng",
       "name": "Hao Zheng",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-lt_1zn-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-lt_1zn-image.png?version=1685611811975",
       "caption": "Notifi",
       "twitter": "hqz_sol",
       "photo": "photos/speakers/hao-zheng.png"
@@ -229,7 +221,7 @@
     {
       "id": "harry-halpin",
       "name": "Harry Halpin",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-e1cggl-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-e1cggl-image.png?version=1685611811975",
       "caption": "NYM CEO",
       "twitter": "harryhalpin",
       "photo": "photos/speakers/harry-halpin.png"
@@ -237,7 +229,7 @@
     {
       "id": "hector-perez",
       "name": "Hector Perez",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-1aooto-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-1aooto-image.png?version=1685611811975",
       "caption": "ZK Validator Growth Manager",
       "twitter": "hectorjperezp",
       "photo": "photos/speakers/hector-perez.png"
@@ -245,7 +237,7 @@
     {
       "id": "igor-konnov",
       "name": "Igor Konnov",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hwx8ws-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hwx8ws-image.png?version=1685611811975",
       "caption": "Informal Systems Principal Scientist",
       "twitter": "k0nn0v",
       "photo": "photos/speakers/igor-konnov.png"
@@ -253,7 +245,7 @@
     {
       "id": "jafar-azam",
       "name": "Jafar Azam",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-w4-qa2-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-w4-qa2-image.png?version=1685611811975",
       "caption": "Composable Finance Developer Relations",
       "twitter": "composableintrn",
       "photo": "photos/speakers/jafar-azam.png"
@@ -261,7 +253,7 @@
     {
       "id": "jahed-momand",
       "name": "Jahed Momand",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ssiw5w-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ssiw5w-image.png?version=1685611811975",
       "caption": "Cerulean Ventures Co-Founder",
       "twitter": "againstutopia",
       "photo": "photos/speakers/jahed-momand.png"
@@ -269,7 +261,7 @@
     {
       "id": "jake-hartnell",
       "name": "Jake Hartnell",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-najlp1-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-najlp1-image.png?version=1685611811975",
       "caption": "Juno Co-Founder",
       "twitter": "JakeHartnell",
       "photo": "photos/speakers/jake-hartnell.png"
@@ -277,7 +269,7 @@
     {
       "id": "jelena-djuric",
       "name": "Jelena Djuric",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-i-pji1-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-i-pji1-image.png?version=1685611811975",
       "caption": "Noble Co-Founder & CEO",
       "twitter": "jelenaaa____",
       "photo": "photos/speakers/jelena-djuric.png"
@@ -285,7 +277,7 @@
     {
       "id": "jeroen-develter",
       "name": "Jeroen Develter",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-fiwynn-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-fiwynn-image.png?version=1685611811975",
       "caption": "Persistence Ecosystem Development",
       "twitter": "dneorej",
       "photo": "photos/speakers/jeroen-develter.png"
@@ -293,7 +285,7 @@
     {
       "id": "josh-bowen",
       "name": "Josh Bowen",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cdxpmh-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-cdxpmh-image.png?version=1685611811975",
       "caption": "Astria CEO",
       "twitter": "jskybowen",
       "photo": "photos/speakers/josh-bowen.png"
@@ -301,7 +293,7 @@
     {
       "id": "julien-robert",
       "name": "Julien Robert",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-d0yv3j-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-d0yv3j-image.png?version=1685611811975",
       "caption": "Binary Builders Software Engineer",
       "twitter": "_julienrbrt",
       "photo": "photos/speakers/julien-robert.png"
@@ -309,7 +301,7 @@
     {
       "id": "kamen-trendafilov",
       "name": "Kamen Trendafilov",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-9ysdrb-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-9ysdrb-image.png?version=1685611811975",
       "caption": "Nolus Co-Founder",
       "twitter": "k_trendafilov",
       "photo": "photos/speakers/kamen-trendafilov.png"
@@ -317,7 +309,7 @@
     {
       "id": "kyrylo-khomiakov",
       "name": "Kyrylo Khomiakov",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list--z_gfn-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list--z_gfn-image.png?version=1685611811975",
       "caption": "Binance General Manager CEE",
       "twitter": "KhomiakovKyrylo",
       "photo": "photos/speakers/kyrylo-khomiakov.png"
@@ -325,7 +317,7 @@
     {
       "id": "lauren-gallinaro",
       "name": "Lauren Gallinaro",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-r-hyfk-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-r-hyfk-image.png?version=1685611811975",
       "caption": "Informal Systems - Hub Team Software Engineer",
       "twitter": "_glnro",
       "photo": "photos/speakers/lauren-gallinaro.png"
@@ -333,7 +325,7 @@
     {
       "id": "lior-bondarevsky",
       "name": "Lior Bondarevsky",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4fhily-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4fhily-image.png?version=1685611811975",
       "caption": "Secret Labs Senior Software Engineer",
       "twitter": "liorbond",
       "photo": "photos/speakers/lior-bondarevsky.png"
@@ -341,14 +333,14 @@
     {
       "id": "luca-franceschini",
       "name": "Luca Franceschini",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-vyy9_z-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-vyy9_z-image.png?version=1685611811975",
       "caption": "Phi Labs Developer Relations Engineer",
       "photo": "photos/speakers/luca-franceschini.png"
     },
     {
       "id": "luis-quispe-gonzales",
       "name": "Luis Quispe Gonzales",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-gsqdbz-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-gsqdbz-image.png?version=1685611811975",
       "caption": "Halborn Senior Security Architect",
       "twitter": "owlatnite",
       "photo": "photos/speakers/luis-quispe-gonzales.png"
@@ -356,7 +348,7 @@
     {
       "id": "maghnus-mareneck",
       "name": "Maghnus Mareneck",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-tezixv-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-tezixv-image.png?version=1685611811975",
       "caption": "Skip Protocol Co-Founder",
       "twitter": "0xMagmar",
       "photo": "photos/speakers/maghnus-mareneck.png"
@@ -364,7 +356,7 @@
     {
       "id": "maksim-kupriianov",
       "name": "Maksim Kupriianov",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uyigv2-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uyigv2-image.png?version=1685611811975",
       "caption": "Persistence Labs Senior Blockchain Engineer",
       "twitter": "xlab_gg",
       "photo": "photos/speakers/maksim-kupriianov.png"
@@ -372,7 +364,7 @@
     {
       "id": "marek-sandrik",
       "name": "Marek Sandrik",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-jo-vhh-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-jo-vhh-image.png?version=1685611811975",
       "caption": "RockawayX Principal",
       "twitter": "_marekSan_",
       "country": "cz",
@@ -381,7 +373,7 @@
     {
       "id": "marta-adamczyk",
       "name": "Marta Adamczyk",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hnezwk-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hnezwk-image.png?version=1685611811975",
       "caption": "SubQuery Technology Evangelist",
       "twitter": "madamczyk0",
       "country": "nz",
@@ -390,7 +382,7 @@
     {
       "id": "martin-vejmelka",
       "name": "Martin Vejmelka",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hsfgav-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-hsfgav-image.png?version=1685611811975",
       "caption": "Rockaway X Labs CTO",
       "twitter": "shipthecode",
       "country": "cz",
@@ -399,7 +391,7 @@
     {
       "id": "mathijs-van-esch",
       "name": "Mathijs van Esch",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-sghnx5-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-sghnx5-image.png?version=1685611811975",
       "caption": "Maven11 Partner",
       "twitter": "MathijsvEsch",
       "photo": "photos/speakers/mathijs-van-esch.png"
@@ -407,7 +399,7 @@
     {
       "id": "matthew-felice-pace",
       "name": "Matthew Felice Pace",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4-gmr0-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4-gmr0-image.png?version=1685611811975",
       "caption": "Simply Staking CEO",
       "twitter": "mfelicepace",
       "photo": "photos/speakers/matthew-felice-pace.png"
@@ -415,7 +407,7 @@
     {
       "id": "mirko-schmiedl",
       "name": "Mirko Schmiedl",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-gl4yhr-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-gl4yhr-image.png?version=1685611811975",
       "caption": "Staking Rewards CEO",
       "twitter": "berlincrypto",
       "photo": "photos/speakers/mirko-schmiedl.png"
@@ -423,7 +415,7 @@
     {
       "id": "nadim-kobeissi",
       "name": "Nadim Kobeissi",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list--rpahe-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list--rpahe-image.png?version=1685611811975",
       "caption": "NYM Head of Software Intergration",
       "twitter": "kaepora",
       "photo": "photos/speakers/nadim-kobeissi.png"
@@ -431,7 +423,7 @@
     {
       "id": "noam-cohen",
       "name": "Noam Cohen",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-6uiavr-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-6uiavr-image.png?version=1685611811975",
       "caption": "Binary Builders",
       "twitter": "noamwithveto",
       "photo": "photos/speakers/noam-cohen.png"
@@ -439,7 +431,7 @@
     {
       "id": "pierre-alexis-ciavaldini",
       "name": "Pierre-Alexis Ciavaldini",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ox1syc-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ox1syc-image.png?version=1685611811975",
       "caption": "ZK Validator DevOps Consultant",
       "twitter": "pierrealciav",
       "photo": "photos/speakers/pierre-alexis-ciavaldini.png"
@@ -447,7 +439,7 @@
     {
       "id": "rafael-aviles",
       "name": "Rafael Aviles",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-8fi_-a-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-8fi_-a-image.png?version=1685611811975",
       "caption": "Numia Co-Founder",
       "twitter": "avilesrafa",
       "photo": "photos/speakers/rafael-aviles.png"
@@ -455,14 +447,14 @@
     {
       "id": "robert-zaremba",
       "name": "Robert Zaremba",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yaillo-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yaillo-image.png?version=1685611811975",
       "caption": "Umee Principal Engineer",
       "photo": "photos/speakers/robert-zaremba.png"
     },
     {
       "id": "ruben-brons",
       "name": "Ruben Brons",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-b1re2d-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-b1re2d-image.png?version=1685611811975",
       "caption": "Flow Traders Business Development & Investment",
       "twitter": "RUGEBRO",
       "photo": "photos/speakers/ruben-brons.png"
@@ -470,7 +462,7 @@
     {
       "id": "rushi-manche",
       "name": "Rushi Manche",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-i03mt2-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-i03mt2-image.png?version=1685611811975",
       "caption": "Movement Labs Co-Founder",
       "twitter": "rushimanche",
       "photo": "photos/speakers/rushi-manche.png"
@@ -478,7 +470,7 @@
     {
       "id": "sam-cassatt",
       "name": "Sam Cassatt",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-r5_vl4-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-r5_vl4-image.png?version=1685611811975",
       "caption": "Analog Interchain Co-Founder & Managing Partner",
       "twitter": "samcassatt",
       "photo": "photos/speakers/sam-cassatt.png"
@@ -486,7 +478,7 @@
     {
       "id": "sam-hart",
       "name": "Sam Hart",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-bmkfmg-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-bmkfmg-image.png?version=1685611811975",
       "caption": "Skip Protocol Head of Product & Strategy",
       "twitter": "hxrts",
       "photo": "photos/speakers/sam-hart.png"
@@ -494,7 +486,7 @@
     {
       "id": "samantha-bohbot",
       "name": "Samantha Bohbot",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ajd4wh-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ajd4wh-image.png?version=1685611811975",
       "caption": "RockawayX Chief Growth Officer",
       "twitter": "samantha_bohbot",
       "photo": "photos/speakers/samantha-bohbot.png"
@@ -502,7 +494,7 @@
     {
       "id": "samantha-ricotta",
       "name": "Samantha Ricotta",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uwbzea-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-uwbzea-image.png?version=1685611811975",
       "caption": "Binary Builders Software Engineer",
       "twitter": "killasalmon",
       "photo": "photos/speakers/samantha-ricotta.png"
@@ -510,7 +502,7 @@
     {
       "id": "saul-hudson",
       "name": "Saul Hudson",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-urrtw7-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-urrtw7-image.png?version=1685611811975",
       "caption": "Angle42 Co-Founder",
       "twitter": "callsaul42",
       "photo": "photos/speakers/saul-hudson.png"
@@ -518,7 +510,7 @@
     {
       "id": "sean-braithwaite",
       "name": "Sean Braithwaite",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ml-os3-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ml-os3-image.png?version=1685611811975",
       "caption": "Mekatek Co-Founder & CEO",
       "twitter": "brapse",
       "country": "de",
@@ -527,14 +519,14 @@
     {
       "id": "sebastian-higgs",
       "name": "Sebastian Higgs",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-edey9k-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-edey9k-image.png?version=1685611811975",
       "caption": "Fraction Chief Strategy Officer",
       "photo": "photos/speakers/sebastian-higgs.png"
     },
     {
       "id": "spenser-huang",
       "name": "Spenser Huang",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-f3gzsr-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-f3gzsr-image.png?version=1685611811975",
       "caption": "Coinlist Managing Director",
       "twitter": "huangspenser",
       "photo": "photos/speakers/spenser-huang.png"
@@ -542,7 +534,7 @@
     {
       "id": "sunny-aggarwal",
       "name": "Sunny Aggarwal",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4sxkyx-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-4sxkyx-image.png?version=1685611811975",
       "caption": "Osmosis Co-Founder",
       "twitter": "sunnya97",
       "country": "tw",
@@ -551,7 +543,7 @@
     {
       "id": "tomas-eminger",
       "name": "Tomas Eminger",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-v4fakg-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-v4fakg-image.png?version=1685611811975",
       "caption": "RockawayX Chief Validator Officer",
       "twitter": "EmiT87",
       "photo": "photos/speakers/tomas-eminger.png"
@@ -559,15 +551,24 @@
     {
       "id": "tomas-urban",
       "name": "Tomas Urban",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yjtv3v-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-yjtv3v-image.png?version=1685611811975",
       "caption": "Sparring Crypto Legal",
       "twitter": "cryptourbi",
       "photo": "photos/speakers/tomas-urban.png"
     },
+    {
+      "id": "viktor-fischer",
+      "name": "Viktor Fischer",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-qoaeec-image.png?version=1685611811975",
+      "caption": "RockawayX Managing Partner",
+      "twitter": "viktorfischer",
+      "country": "cz",
+      "photo": "photos/speakers/viktor-fischer.png"
+    },
     {
       "id": "vitalis-salis",
       "name": "Vitalis Salis",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-98on3a-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-98on3a-image.png?version=1685611811975",
       "caption": "Babylon Lead Engineer",
       "twitter": "vitsalis",
       "photo": "photos/speakers/vitalis-salis.png"
@@ -575,7 +576,7 @@
     {
       "id": "yair-cleper",
       "name": "Yair Cleper",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ynufic-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-ynufic-image.png?version=1685611811975",
       "caption": "Lava Network Co-Founder & CEO",
       "twitter": "yaircleper",
       "photo": "photos/speakers/yair-cleper.png"
@@ -583,7 +584,7 @@
     {
       "id": "yannick-socolov",
       "name": "Yannick Socolov",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-tuzuj6-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-tuzuj6-image.png?version=1685611811975",
       "caption": "Chorus One Partnerships",
       "twitter": "Yannimoto",
       "photo": "photos/speakers/yannick-socolov.png"
@@ -591,7 +592,7 @@
     {
       "id": "yaz-khoury",
       "name": "Yaz Khoury",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rckxid-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-rckxid-image.png?version=1685611811975",
       "caption": "Celestia Labs Head of Developer Relations",
       "twitter": "yazanator",
       "photo": "photos/speakers/yaz-khoury.png"
@@ -599,7 +600,7 @@
     {
       "id": "zaki-manian",
       "name": "Zaki Manian",
-      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-aj7n-q-image.png?version=1685355161577",
+      "photoUrl": "https://ik.imagekit.io/treevio//tr:w-500/https://s3.eu-central-1.wasabisys.com/rbf-gateway/rbf-gateway/speakersc-list-aj7n-q-image.png?version=1685611811975",
       "caption": "Sommelier Co-Founder",
       "twitter": "zmanian",
       "country": "us",
diff --git a/data/23/events/praguedefi/data.json b/data/23/events/praguedefi/data.json
index caf5b06..46fb707 100644
--- a/data/23/events/praguedefi/data.json
+++ b/data/23/events/praguedefi/data.json
@@ -40,14 +40,6 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/MjzmNYDWxSeGqYwC3CRA2/88952a0b6da45ef9b85e62e95359f2e2/arseneeth.jpg",
       "photo": "photos/speakers/arseneeth.jpg"
     },
-    {
-      "id": "avihu-mordechai-levy",
-      "name": "Avihu Mordechai Levy",
-      "twitter": "avihu28",
-      "caption": "StarkWare",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/3OcAiHEyvxOESkY1Vz2bc4/79d4bd550c7d7dec2b70ca1682aa59bf/Avihu_Mordechai_Levy.jpg",
-      "photo": "photos/speakers/avihu-mordechai-levy.jpg"
-    },
     {
       "id": "conor-gilmore",
       "name": "Conor Gilmore",
@@ -113,6 +105,14 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/6RcO7FFJhyeTW2rmtFTx9m/e7bcb7071eb63dcb9d2dc25c29a3a2aa/Gaspard_Peduzzi.jpeg",
       "photo": "photos/speakers/gaspard-peduzzi.jpeg"
     },
+    {
+      "id": "henri-lieutaud",
+      "name": "Henri Lieutaud",
+      "twitter": "henrlihenrli",
+      "caption": "Starknet",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/36AnNjKCS89oKb1gM0pfXy/3af35ebc442b54c24e557dfe5485174c/Henri_Lieutaud.png",
+      "photo": "photos/speakers/henri-lieutaud.png"
+    },
     {
       "id": "james-glasscock",
       "name": "James Glasscock",
diff --git a/data/23/events/praguedefi/photos/speakers/henri-lieutaud-150px.op.webp b/data/23/events/praguedefi/photos/speakers/henri-lieutaud-150px.op.webp
new file mode 100644
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diff --git a/data/23/events/praguedefi/photos/speakers/henri-lieutaud-300px.op.webp b/data/23/events/praguedefi/photos/speakers/henri-lieutaud-300px.op.webp
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diff --git a/data/23/events/praguedefi/photos/speakers/henri-lieutaud-500px.op.webp b/data/23/events/praguedefi/photos/speakers/henri-lieutaud-500px.op.webp
new file mode 100644
index 0000000..65b173b
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diff --git a/data/23/events/praguedefi/photos/speakers/henri-lieutaud.op.webp b/data/23/events/praguedefi/photos/speakers/henri-lieutaud.op.webp
new file mode 100644
index 0000000..c57d672
Binary files /dev/null and b/data/23/events/praguedefi/photos/speakers/henri-lieutaud.op.webp differ
diff --git a/data/23/events/praguedefi/photos/speakers/henri-lieutaud.png b/data/23/events/praguedefi/photos/speakers/henri-lieutaud.png
new file mode 100644
index 0000000..99cadc7
Binary files /dev/null and b/data/23/events/praguedefi/photos/speakers/henri-lieutaud.png differ
diff --git a/data/23/events/reg3/data.json b/data/23/events/reg3/data.json
index 266d04c..dbb1faf 100644
--- a/data/23/events/reg3/data.json
+++ b/data/23/events/reg3/data.json
@@ -99,6 +99,13 @@
       "country": "cz",
       "photo": "photos/speakers/lukas-kovanda.jpg"
     },
+    {
+      "id": "madalena-perestrelo-de-oliveira",
+      "name": "Madalena Perestrelo de Oliveira",
+      "caption": "Professor at the University of Lisbon School of Law, Senior Counsel at PLMJ",
+      "photoUrl": "https://uploads-ssl.webflow.com/6419d553c89ebe398c7c8116/6477447378caa12ba4970a32_DSC_1554%20(1)_1.jpg",
+      "photo": "photos/speakers/madalena-perestrelo-de-oliveira.jpg"
+    },
     {
       "id": "michal-matejka",
       "name": "Michal Matějka",
diff --git a/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-150px.op.webp b/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-150px.op.webp
new file mode 100644
index 0000000..399caf1
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diff --git a/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-300px.op.webp b/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-300px.op.webp
new file mode 100644
index 0000000..6c22dca
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diff --git a/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-500px.op.webp b/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira-500px.op.webp
new file mode 100644
index 0000000..84326c1
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diff --git a/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira.jpg b/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira.jpg
new file mode 100644
index 0000000..1f551bb
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diff --git a/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira.op.webp b/data/23/events/reg3/photos/speakers/madalena-perestrelo-de-oliveira.op.webp
new file mode 100644
index 0000000..bffefed
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diff --git a/data/23/events/utxo/data.json b/data/23/events/utxo/data.json
index 492c8ea..26f7dff 100644
--- a/data/23/events/utxo/data.json
+++ b/data/23/events/utxo/data.json
@@ -200,7 +200,8 @@
       "tracks": [
         "zaklady",
         "dao",
-        "spolecnost"
+        "spolecnost",
+        "polkadot"
       ],
       "country": "cz",
       "desc": "Chain-agnostic vizionář, community builder, Web3 Events COO. Progresivní web3 kouzelník.\n",
@@ -212,6 +213,25 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/damsky-web.webp",
       "photo": "photos/speakers/damsky.webp"
     },
+    {
+      "id": "daniel-krupka",
+      "name": "Daniel Krupka",
+      "twitter": "krupda42",
+      "bio": "Head of research",
+      "orgs": "[Coinbureau](https://www.coinbureau.com/)\n",
+      "caption": "Head of research\n",
+      "tracks": [
+        "eth",
+        "spolecnost"
+      ],
+      "country": "cz",
+      "lead": true,
+      "photos": [
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/daniel-krupka-twitter.jpg",
+      "photo": "photos/speakers/daniel-krupka.jpg"
+    },
     {
       "id": "david-marak",
       "name": "David Mařák",
@@ -897,6 +917,31 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/lc-young-web.jpg",
       "photo": "photos/speakers/lc-young.jpg"
     },
+    {
+      "id": "lea-petrasova",
+      "name": "Lea Petrášová",
+      "lead": true,
+      "twitter": "LeaPetras",
+      "bio": "Spoluzakladatelka, CEO",
+      "orgs": "[Vexl](https://vexl.it)\n",
+      "caption": "Spoluzakladatelka, CEO\n",
+      "tracks": [
+        "btc",
+        "regulace"
+      ],
+      "web": {
+        "url": "https://vexl.it"
+      },
+      "country": "sk",
+      "desc": "Lea je spoluzakladatelkou a CEO společnosti Vexl, mobilní aplikace, která usnadňuje obchodování s bitcoiny tak, jak bylo zamýšleno: peer-to-peer a bez KYC.\n",
+      "pretalxId": "MX9NKW",
+      "photos": [
+        "web:webp",
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/lea-petrasova-web.webp",
+      "photo": "photos/speakers/lea-petrasova.webp"
+    },
     {
       "id": "libor-flossler",
       "nickname": "Investocka",
@@ -1028,6 +1073,7 @@
       ],
       "country": "sk",
       "lead": true,
+      "pretalxId": "8HXCTV",
       "photos": [
         "web:jpg",
         "twitter:jpg"
@@ -1035,6 +1081,30 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/mario-havel-web.jpg",
       "photo": "photos/speakers/mario-havel.jpg"
     },
+    {
+      "id": "markoinether",
+      "name": "markoInEther",
+      "twitter": "markoinether",
+      "bio": "A surfing addict, decentralization & DVT evangelist",
+      "orgs": "[SSV DAO](https://ssv.network/dao/) contributor.\n",
+      "caption": "A surfing addict, decentralization & DVT evangelist\n",
+      "tracks": [
+        "eth",
+        "defi"
+      ],
+      "web": {
+        "url": "https://www.youtube.com/@markoinether"
+      },
+      "country": "sk",
+      "desc": "A surfing addict, decentralization & DVT evangelist. \nCurrently working on DVT tech and decentralizing staking infrastructure using distributed validator technology as SSV DAO contributor.\nInvolved with the Ethereum ecosystem since 2016 organizing Ethereum meetups in Bratislava and volunteering at Devcon4, 6.  Have been working on various staking projects since 2020. \nCheck my blog if you want to read my [rambling on ETH staking](https://medium.com/@MarkoInEther) and crypto in general, my [shitposting track record](https://twitter.com/markoinether) on twitter or [awesome-ssv repo](https://github.com/bloxapp/awesome-ssv/) if you are a builder interested in Eth staking.\n",
+      "pretalxId": "ZXKJZP",
+      "photos": [
+        "web:webp",
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/markoinether-web.webp",
+      "photo": "photos/speakers/markoinether.webp"
+    },
     {
       "id": "martin-bok",
       "name": "Martin Bok",
@@ -1123,31 +1193,6 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/martin-kabrhel-web.webp",
       "photo": "photos/speakers/martin-kabrhel.webp"
     },
-    {
-      "id": "martin-matejka",
-      "name": "Martin Matejka",
-      "twitter": "MatejkaMar",
-      "bio": "Founder a vývojář platformy",
-      "caption": "Founder a vývojář platformy Firefish.io\n",
-      "orgs": "[firefish.io](https://firefish.io/)\n",
-      "tracks": [
-        "btc",
-        "defi",
-        "spolecnost"
-      ],
-      "web": {
-        "url": "https://firefish.io/"
-      },
-      "country": "sk",
-      "desc": "Martin se celý život pohybuje na finančních trzích. V rámci tradičních financí dlouhé roky vedl úspěšný tradingový tým obchodující s energetickými komoditami. Od roku 2021 se plně věnuje Bitcoinu. Nejdříve spoluzaložil hedge fond Stratosphere a od loňského roku pak vyvíjí platformu Firefish.io, která umožňuje využití Bitcoinu jako finančního kolaterálu.\n",
-      "pretalxId": "AWZZDN",
-      "photos": [
-        "web:webp",
-        "twitter:jpg"
-      ],
-      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/martin-matejka-web.webp",
-      "photo": "photos/speakers/martin-matejka.webp"
-    },
     {
       "id": "matej-curda",
       "name": "Matěj Čurda",
@@ -1289,6 +1334,27 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/milan-peschl-web.webp",
       "photo": "photos/speakers/milan-peschl.webp"
     },
+    {
+      "id": "nataliya-grimberg",
+      "name": "Nataliya Grimberg",
+      "bio": "Web3 Fashion & Luxury Consultant",
+      "orgs": "Metaverse Fashion Expert at [Somnium Space](https://somniumspace.com/), Digital Fashion Consultant at MOYA\n",
+      "caption": "Web3 Fashion & Luxury Consultant\n",
+      "tracks": [
+        "nft"
+      ],
+      "web": {
+        "url": "https://www.msha.ke/futurist"
+      },
+      "country": "cz",
+      "desc": "Nataliya is a Web3 fashion and luxury strategist building a new generation of digital experiences and reporting on the newest developments in the field as a speaker and trend forecaster. She works with luxury and tech companies to help them navigate the rapidly changing landscape of the metaverse industry with future-proof strategies.\n",
+      "pretalxId": "LVJ3L3",
+      "photos": [
+        "web:webp"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/nataliya-grimberg-web.webp",
+      "photo": "photos/speakers/nataliya-grimberg.webp"
+    },
     {
       "id": "niftyape",
       "name": "NiftyApe",
@@ -1515,6 +1581,7 @@
       ],
       "country": "cz",
       "desc": "Zakladatel Polkadot, Dfinity a Solana komunit v ČR a na Slovensku. Nejblíže je mi ovšem [Polkadot](https://polkadot.network/), proto jsme založili značku [Polkadotters](https://polkadotters.medium.com/) pod kterou pravidelně píšeme pro mezinárodní publikum a zároveň provozujeme validátory na Polkadotu, Kusamě a téměr všech ostatních parachainech.\n",
+      "pretalxId": "XYQSQC",
       "photos": [
         "web:jpg",
         "twitter:jpg"
@@ -1623,7 +1690,7 @@
       "name": "Samuela Davidova",
       "twitter": "samremotegirl",
       "bio": "Thinker | Doer | Rethinking Life",
-      "orgs": "[The Freeist](https://thefreeist.com/)\n",
+      "orgs": "Author [The Freeist](https://thefreeist.com/), ambasador konference [DeGameFi](https://degamefi.io/)\n",
       "caption": "Thinker | Doer | Rethinking Life\n",
       "tracks": [
         "spolecnost"
@@ -1641,6 +1708,28 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/samuela-davidova-web.webp",
       "photo": "photos/speakers/samuela-davidova.webp"
     },
+    {
+      "id": "six",
+      "name": "Six",
+      "twitter": "sixTheDave",
+      "bio": "Web3 security auditor and consultant",
+      "orgs": "Founder of [CCTF](https://cryptoctf.org/) and [Polkadot](https://polkadot.network/) Head Ambassador.\n",
+      "caption": "Web3 security auditor and consultant\n",
+      "tracks": [
+        "nft"
+      ],
+      "web": {
+        "url": "https://sixthedave.me"
+      },
+      "country": "hu",
+      "desc": "Founder of CCTF and Polkadot Head Ambassador. Web3 security auditor and consultant.\n",
+      "pretalxId": "GY7UG3",
+      "photos": [
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/six-twitter.jpg",
+      "photo": "photos/speakers/six.jpg"
+    },
     {
       "id": "sodomak",
       "name": "Milan Půlkrábek",
@@ -1729,6 +1818,7 @@
         "url": "https://pwn.xyz/"
       },
       "country": "cz",
+      "pretalxId": "AZCLF8",
       "photos": [
         "web:webp",
         "twitter:jpg"
@@ -1802,6 +1892,26 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/tomas-hajek-web.webp",
       "photo": "photos/speakers/tomas-hajek.webp"
     },
+    {
+      "id": "tomas-vlasak",
+      "name": "Tomáš Vlasák",
+      "nickname": "Krypto Tomáš",
+      "twitter": "KryptoTomasCZ",
+      "bio": "DeFi konzultant",
+      "orgs": "Investor na volné noze\n",
+      "caption": "DeFi konzultant\n",
+      "tracks": [
+        "defi"
+      ],
+      "country": "cz",
+      "desc": "Akciový a krypto investor.\n",
+      "pretalxId": "DAEAV8",
+      "photos": [
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/tomas-vlasak-twitter.jpg",
+      "photo": "photos/speakers/tomas-vlasak.jpg"
+    },
     {
       "id": "urza",
       "name": "Urza",
@@ -1926,6 +2036,31 @@
       "photoUrl": "https://spec.utxo.cz/23/photos/speakers/vojtech-olbrecht-web.jpg",
       "photo": "photos/speakers/vojtech-olbrecht.jpg"
     },
+    {
+      "id": "vratislav-pecka",
+      "name": "Vratislav Pecka",
+      "nickname": "PosterLad",
+      "twitter": "posterlad",
+      "bio": "Digitální umělec",
+      "orgs": "[SuperRare](https://superrare.com/) artist\n",
+      "caption": "Digitální umělec\n",
+      "tracks": [
+        "nft"
+      ],
+      "web": {
+        "url": "https://www.posterlad.com"
+      },
+      "country": "cz",
+      "desc": "PosterLad je projekt digitálního umělce Vratislava Pecky. Své práce vystavoval na mnoha místech v různých koutech světa, jeho NFT tvorba byla pak vystavena i na několika virtuálních a NFT výstavách, naposledy na NFTNYC nebo v pařížské aukční síni FauveParis. Projekt byl oceněn několika mezinárodními designovými cenami. Na konci roku 2020 byl přijat na platformu SuperRare. Je aktivní jak v tradičním uměleckém světě, tak v prostředí NFT.\n",
+      "pretalxId": "FKQV8V",
+      "lead": true,
+      "photos": [
+        "web:webp",
+        "twitter:jpg"
+      ],
+      "photoUrl": "https://spec.utxo.cz/23/photos/speakers/vratislav-pecka-web.webp",
+      "photo": "photos/speakers/vratislav-pecka.webp"
+    },
     {
       "id": "yangwao",
       "name": "yangwao",
@@ -1938,6 +2073,7 @@
       ],
       "country": "sk",
       "desc": "🔆 🌘 Solar ⚔️  Lunar punk ⏳💾  Accumulating History 🦠🧠 Senescent cells are bad 🥽🖼️  @KodaDot @SubWorkBled\n",
+      "pretalxId": "YX3EL7",
       "photos": [
         "web:webp",
         "twitter:jpg"
@@ -1964,6 +2100,12 @@
       "shortname": "Ethereum",
       "examples": "* Ethereum 2.0\n* Layer2 - rollupy\n* (EVM) Sidechainy\n* vývoj smart-kontraktů (solidity)\n* MEV - Miner Extractable Value\n"
     },
+    {
+      "id": "polkadot",
+      "name": "Polkadot",
+      "shortname": "Polkadot",
+      "examples": "* Polkadot\n"
+    },
     {
       "id": "defi",
       "name": "Decentralizované finance (DeFi)",
diff --git a/data/23/events/utxo/photos/speakers/daniel-krupka-150px.op.webp b/data/23/events/utxo/photos/speakers/daniel-krupka-150px.op.webp
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diff --git a/data/23/events/utxo/photos/speakers/vratislav-pecka.op.webp b/data/23/events/utxo/photos/speakers/vratislav-pecka.op.webp
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diff --git a/data/23/events/web3privacy/data.json b/data/23/events/web3privacy/data.json
index b92ca88..4fa2d90 100644
--- a/data/23/events/web3privacy/data.json
+++ b/data/23/events/web3privacy/data.json
@@ -17,6 +17,13 @@
       "photoUrl": "https://prague.web3privacy.info/people/alona-shevchenko.jpg",
       "photo": "photos/speakers/alona-shevchenko.jpg"
     },
+    {
+      "id": "althea",
+      "name": "Althea",
+      "caption": "Head of Comms, Privacy & Scaling Exploration",
+      "photoUrl": "https://prague.web3privacy.info/people/althea.jpeg",
+      "photo": "photos/speakers/althea.jpeg"
+    },
     {
       "id": "ameen-soleimani",
       "name": "Ameen Soleimani",
@@ -98,6 +105,13 @@
       "photoUrl": "https://prague.web3privacy.info/people/max-hampshire.jpg",
       "photo": "photos/speakers/max-hampshire.jpg"
     },
+    {
+      "id": "merula",
+      "name": "Merula",
+      "caption": "Software engineer and cryptographer Circles Entropy",
+      "photoUrl": "https://prague.web3privacy.info/people/merula.jpeg",
+      "photo": "photos/speakers/merula.jpeg"
+    },
     {
       "id": "mykola-siusko",
       "name": "Mykola Siusko",
@@ -141,6 +155,21 @@
       "photoUrl": "https://prague.web3privacy.info/people/rachel-rose-oleary.jpg",
       "photo": "photos/speakers/rachel-rose-o'leary.jpg"
     },
+    {
+      "id": "serinko",
+      "name": "Serinko",
+      "caption": "Privacy Researcher",
+      "photoUrl": "https://prague.web3privacy.info/people/serinko.jpeg",
+      "photo": "photos/speakers/serinko.jpeg"
+    },
+    {
+      "id": "steffen-kux",
+      "name": "Steffen Kux",
+      "twitter": "SteffenKux",
+      "caption": "CEO dm3",
+      "photoUrl": "https://prague.web3privacy.info/people/steffen.jpeg",
+      "photo": "photos/speakers/steffen-kux.jpeg"
+    },
     {
       "id": "tibor-csoka",
       "name": "Tibor Csóka",
@@ -155,6 +184,14 @@
       "country": "cz",
       "photoUrl": "https://prague.web3privacy.info/people/tree.jpg",
       "photo": "photos/speakers/tree.jpg"
+    },
+    {
+      "id": "wesley",
+      "name": "Wesley",
+      "twitter": "wslyvh",
+      "caption": "Events @ Ethereum 🛠️ Indie Maker",
+      "photoUrl": "https://prague.web3privacy.info/people/wslyvh.png",
+      "photo": "photos/speakers/wesley.png"
     }
   ]
 }
\ No newline at end of file
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