diff --git a/data/23/events/ethprague/data.json b/data/23/events/ethprague/data.json
index 2ed6eea..5c46c3d 100644
--- a/data/23/events/ethprague/data.json
+++ b/data/23/events/ethprague/data.json
@@ -17,6 +17,14 @@
       "country": "hk",
       "photo": "photos/speakers/abeer-sharma.png"
     },
+    {
+      "id": "abena-asante",
+      "name": "Abena Asante",
+      "twitter": "abena_eth?lang=en",
+      "caption": "SheFi / Bankless Africa / UZH",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/3LxgxJmev1WMQzikvjChbe/8910d3c93286aff6798da6b3ca8cc22f/ProfilePicture_Abena_RkMM6pK.jpg",
+      "photo": "photos/speakers/abena-asante.jpg"
+    },
     {
       "id": "aless",
       "name": "Aless",
@@ -41,14 +49,6 @@
       "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",
@@ -90,14 +90,6 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/4V4vXtN92xxVtUtQyw8epw/5132b725ca062c73677f7cd085d9d8ca/Avihu_1_YLcWwy1-2.jpg",
       "photo": "photos/speakers/avihu-mordechai-levy.jpg"
     },
-    {
-      "id": "bernd-riedel",
-      "name": "Bernd Riedel",
-      "twitter": "https://ellerystudio.com",
-      "caption": "Ellery Studio",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/3pJ98sPnOClukhSfJJJFSU/00fc22c9874a15b81820e440c13f4d4c/unnamed.jpg",
-      "photo": "photos/speakers/bernd-riedel.jpg"
-    },
     {
       "id": "brewster-kahle",
       "name": "Brewster Kahle",
@@ -634,6 +626,14 @@
       "country": "us",
       "photo": "photos/speakers/puncar.jpg"
     },
+    {
+      "id": "rachel-rose-o'leary",
+      "name": "Rachel-Rose O'Leary ",
+      "twitter": "lunar_mining",
+      "caption": "DarkFi",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/7n2DuaAacZqavu63VUpV97/da05e4b0f95191af7f3e386cece317fc/ikqsOZMG_400x400_Tc0g0gI.jpg",
+      "photo": "photos/speakers/rachel-rose-o'leary.jpg"
+    },
     {
       "id": "radek-svarz",
       "name": "Radek Svarz",
@@ -708,14 +708,6 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/1XzbVlMlPfJaRgen4HdAI6/ad544bd662525e5d1a499aaa05c41efc/PIC_O8fwdfS.jpg",
       "photo": "photos/speakers/saul-martin.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",
@@ -790,6 +782,14 @@
       "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/2NqJAtibmXHGj6lV1lxWk8/190348f4e303add3ecdf5a3e415f88eb/signal-2023-04-13-172434_002.jpeg",
       "photo": "photos/speakers/vitalik-buterin.jpeg"
     },
+    {
+      "id": "vlad-frolov",
+      "name": "Vlad Frolov",
+      "twitter": "Freol",
+      "caption": "NEar protocol",
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/7iTkqM6ljZI1R02gSJRmrp/9c0c4141de5f607650a5491d83286cda/F826926C-E01A-4EB1-A8FE-CAA68D02F3A0.jpeg",
+      "photo": "photos/speakers/vlad-frolov.jpeg"
+    },
     {
       "id": "wlodek-gogloza",
       "name": "Wlodek Gogloza",
diff --git a/data/23/events/ethprague/photos/speakers/abena-asante-150px.op.webp b/data/23/events/ethprague/photos/speakers/abena-asante-150px.op.webp
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diff --git a/data/23/events/praguedefi/data.json b/data/23/events/praguedefi/data.json
index 1e51dcb..caf5b06 100644
--- a/data/23/events/praguedefi/data.json
+++ b/data/23/events/praguedefi/data.json
@@ -118,8 +118,8 @@
       "name": "James Glasscock",
       "twitter": "0xJMG",
       "caption": "Reserve",
-      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/4wMGzz3ucZhE3SaM3OLFjQ/e806110522cb65775e82c3606d51f001/James_Glasscock.png",
-      "photo": "photos/speakers/james-glasscock.png"
+      "photoUrl": "https://images.ctfassets.net/6j1me6tz5h39/4wMGzz3ucZhE3SaM3OLFjQ/55d71e664d1380b3786443f93e69db4d/2MB_-_James.jpg",
+      "photo": "photos/speakers/james-glasscock.jpg"
     },
     {
       "id": "jan-osolnik",
diff --git a/data/23/events/praguedefi/photos/speakers/james-glasscock.jpg b/data/23/events/praguedefi/photos/speakers/james-glasscock.jpg
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index 0000000..3baac30
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diff --git a/data/23/events/utxo/data.json b/data/23/events/utxo/data.json
index 5941ca5..4e3e229 100644
--- a/data/23/events/utxo/data.json
+++ b/data/23/events/utxo/data.json
@@ -994,18 +994,18 @@
       "id": "matej-zimak",
       "name": "Matej Zimák",
       "twitter": "mattbullish",
-      "bio": "Techpreneur, zastánce Web3 & NFT, spoluzakladatel Museverse, The Divergents",
-      "orgs": "Spoluzakladatel [Museverse](https://museverse.xyz/)\n",
+      "bio": "Techpreneur, advisor, zastánce Web3 & NFT",
+      "orgs": "Spoluzakladatel [Museverse](https://museverse.xyz/), [NFTense](https://nftense.com) a [The Divergents](https://thedivergents.io)\n",
       "caption": "Spoluzakladatel Museverse, The Divergents\n",
       "tracks": [
         "zaklady",
-        "btc"
+        "nft"
       ],
       "web": {
         "url": "https://museverse.xyz/"
       },
       "country": "cz",
-      "desc": "Zakladatel projektu Štosuj.cz, dříve vývojář v GENERAL BYTES. Zajímám se o Bitcoin a kryptoměny přes 10 let a mým cílem je pomáhat lidem řešit stejný problém, který jsem měl já sám. Ideálně vše automatizovat.\n",
+      "desc": "Matěj (Mattbullish) je analytik a techpreneur, který se po několikaletém strategickém poradenství ve společnosti PwC v roce 2021 ponořil do světa NFT, spoluzaložil umělecký kolektiv NFTense a NFT kolekci The Divergents, kombinující vizuální umění a filantropii. Následně se připojil k web3 VC a podporoval zakladatele web3 projektů. Aktuálně se kromě poradenství v oblasti web3 & NFT věnuje startupu Museverse zaměřenému primárně na využití AI v hudební produkci.\n",
       "pretalxId": "QQVJUL",
       "photos": [
         "web:webp",
diff --git a/data/23/events/web3privacy/data.json b/data/23/events/web3privacy/data.json
index 7ef59e1..b92ca88 100644
--- a/data/23/events/web3privacy/data.json
+++ b/data/23/events/web3privacy/data.json
@@ -36,13 +36,13 @@
       "photo": "photos/speakers/antoni-zolciak.jpg"
     },
     {
-      "id": "constanza-gallo",
-      "name": "Constanza Gallo",
+      "id": "costanza-gallo",
+      "name": "Costanza Gallo",
       "twitter": "costgallo",
       "caption": "Head of partnerships at the [The Swarm Foundation](https://www.ethswarm.org/foundation)",
       "country": "it",
       "photoUrl": "https://prague.web3privacy.info/people/costanza-gallo.jpeg",
-      "photo": "photos/speakers/constanza-gallo.jpeg"
+      "photo": "photos/speakers/costanza-gallo.jpeg"
     },
     {
       "id": "dcbuilder-eth",
diff --git a/data/23/events/web3privacy/photos/speakers/costanza-gallo-150px.op.webp b/data/23/events/web3privacy/photos/speakers/costanza-gallo-150px.op.webp
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