diff --git a/VERSION.properties b/VERSION.properties
index a33be7a..54add94 100644
--- a/VERSION.properties
+++ b/VERSION.properties
@@ -1,2 +1,2 @@
-client.version=1.2.42
-server.version=1.2.36
+client.version=1.2.43
+server.version=1.2.37
diff --git a/shine-UI/js/pages/add-channel-view.js b/shine-UI/js/pages/add-channel-view.js
index 3cd4e7b..475f40a 100644
--- a/shine-UI/js/pages/add-channel-view.js
+++ b/shine-UI/js/pages/add-channel-view.js
@@ -44,11 +44,11 @@ export function render({ navigate }) {
   form.className = 'card stack';
   form.innerHTML = `
     <strong class="channel-head-title">Создание канала</strong>
-    <p class="channel-head-meta">Можно использовать кириллицу, латиницу, цифры, пробел, _ и -.</p>
+    <p class="channel-head-meta">Можно использовать только латиницу, цифры, _ и -.</p>
     <p class="channel-head-meta">Длина названия: от 3 до 32 символов. Название уникально во всей системе.</p>
 
     <label for="channel-name">Название канала</label>
-    <input id="channel-name" class="input" maxlength="64" placeholder="Например: Поток силы" required />
+    <input id="channel-name" class="input" maxlength="32" placeholder="Например: my_channel-1" required />
     <div id="channel-name-error" class="meta-muted inline-error"></div>
 
     <label for="channel-description">Описание канала (необязательно)</label>
@@ -124,18 +124,14 @@ export function render({ navigate }) {
     errorEl.textContent = '';
 
     try {
-      const created = await authService.addBlockCreateChannel({
+      await authService.addBlockCreateChannel({
         login,
         storagePwd,
         channelName: normalizeChannelDisplayName(check.name),
         channelDescription: normalizeChannelDescription(check.description),
       });
 
-      const baseMessage = `Канал "${normalizeChannelDisplayName(check.name)}" создан.`;
-      const successMessage = created?.usedLegacyDescriptionFallback && created?.savedDescriptionViaUserParam
-        ? `${baseMessage} Описание сохранено через блок параметра.`
-        : baseMessage;
-      persistCreateSuccessFlash(successMessage);
+      persistCreateSuccessFlash(`Канал "${normalizeChannelDisplayName(check.name)}" создан.`);
       navigate('channels-list');
     } catch (error) {
       errorEl.textContent = toUserMessage(error, 'Не удалось создать канал.');
diff --git a/shine-UI/js/pages/channel-view.js b/shine-UI/js/pages/channel-view.js
index df91883..c2cc1ee 100644
--- a/shine-UI/js/pages/channel-view.js
+++ b/shine-UI/js/pages/channel-view.js
@@ -123,41 +123,6 @@ function buildAbsoluteRouteUrl(routePath = '') {
   return url.toString();
 }
 
-function channelDescriptionParamKey(selector) {
-  const owner = String(selector?.ownerBlockchainName || '').trim();
-  const rootNo = Number(selector?.channelRootBlockNumber);
-  const rootHash = normalizeRouteHash(selector?.channelRootBlockHash);
-  if (!owner || !Number.isFinite(rootNo)) return '';
-  return `channel_desc:${owner}:${rootNo}:${rootHash}`;
-}
-
-function parseDescriptionOverride(payload) {
-  if (!payload || typeof payload !== 'object') {
-    return { hasOverride: false, description: '' };
-  }
-
-  const rawValue = String(payload?.value ?? payload?.param_value ?? '').trim();
-  if (!rawValue && !Number(payload?.time_ms || payload?.timeMs || 0)) {
-    return { hasOverride: false, description: '' };
-  }
-
-  if (!rawValue) {
-    return { hasOverride: true, description: '' };
-  }
-
-  try {
-    const parsed = JSON.parse(rawValue);
-    if (parsed && typeof parsed === 'object' && !Array.isArray(parsed)) {
-      const value = typeof parsed.v === 'string' ? parsed.v : '';
-      return { hasOverride: true, description: value.trim() };
-    }
-  } catch {
-    // legacy raw string value
-  }
-
-  return { hasOverride: true, description: rawValue };
-}
-
 function buildSelectorFromRoute(route, channelId) {
   const params = route?.params || {};
 
@@ -410,88 +375,6 @@ function openAddMessageModal({ channelName, onSubmit }) {
   if (textEl) textEl.focus();
 }
 
-function openEditDescriptionModal({ initialValue = '', onSubmit }) {
-  const root = document.getElementById('modal-root');
-  root.innerHTML = `
-    <div class="modal" id="channel-edit-description-modal">
-      <div class="modal-card stack">
-        <h3 class="modal-title">Описание канала</h3>
-        <textarea id="channel-description-text" class="input" rows="5" maxlength="400" placeholder="Коротко о канале, до 200 байт UTF-8"></textarea>
-        <div class="meta-muted" id="channel-description-counter">0 / 200 байт</div>
-        <div class="meta-muted inline-error" id="channel-description-error"></div>
-        <div class="form-actions-grid">
-          <button class="secondary-btn" id="channel-description-cancel" type="button">Отмена</button>
-          <button class="primary-btn" id="channel-description-submit" type="button">Сохранить</button>
-        </div>
-      </div>
-    </div>
-  `;
-
-  const textEl = root.querySelector('#channel-description-text');
-  const counterEl = root.querySelector('#channel-description-counter');
-  const errorEl = root.querySelector('#channel-description-error');
-  const submitEl = root.querySelector('#channel-description-submit');
-  const cancelEl = root.querySelector('#channel-description-cancel');
-
-  let inFlight = false;
-
-  const compute = () => {
-    const value = String(textEl?.value || '').replace(/\s+/g, ' ').trim();
-    const bytes = new TextEncoder().encode(value).length;
-    const ok = bytes <= 200;
-    return {
-      value,
-      bytes,
-      ok,
-      error: ok ? '' : 'Описание слишком длинное: максимум 200 байт UTF-8.',
-    };
-  };
-
-  const setBusy = (busy) => {
-    inFlight = !!busy;
-    submitEl.disabled = inFlight;
-    cancelEl.disabled = inFlight;
-    if (textEl) textEl.disabled = inFlight;
-    submitEl.textContent = inFlight ? 'Сохраняем...' : 'Сохранить';
-  };
-
-  const close = () => {
-    root.innerHTML = '';
-  };
-
-  const updateValidation = () => {
-    const check = compute();
-    counterEl.textContent = `${check.bytes} / 200 байт`;
-    errorEl.textContent = check.error;
-    submitEl.disabled = inFlight || !check.ok;
-    return check;
-  };
-
-  cancelEl?.addEventListener('click', close);
-  textEl?.addEventListener('input', updateValidation);
-  submitEl?.addEventListener('click', async () => {
-    if (inFlight) return;
-    const check = updateValidation();
-    if (!check.ok) return;
-
-    setBusy(true);
-    errorEl.textContent = '';
-    try {
-      await onSubmit(check.value);
-      close();
-    } catch (error) {
-      setBusy(false);
-      errorEl.textContent = toUserMessage(error, 'Не удалось сохранить описание.');
-    }
-  });
-
-  if (textEl) {
-    textEl.value = String(initialValue || '');
-    textEl.focus();
-  }
-  updateValidation();
-}
-
 function mapApiMessageToPost(message, selector, localNumber) {
   const blockNumber = toSafeInt(message?.messageRef?.blockNumber);
   const blockHash = normalizeMessageHash(message?.messageRef?.blockHash);
@@ -552,27 +435,11 @@ async function loadFromApi(route, channelId) {
   const posts = messages.map((message, index) => mapApiMessageToPost(message, selector, index + 1));
   const ownerLogin = String(payload.channel?.ownerLogin || '').trim();
 
-  const readDescription = async () => {
-    const sourceDescription = String(payload.channel?.channelDescription || '').trim();
-    const paramKey = channelDescriptionParamKey(selector);
-    if (!ownerLogin || !paramKey) return sourceDescription;
-
-    try {
-      const paramPayload = await authService.getUserParam(ownerLogin, paramKey);
-      const override = parseDescriptionOverride(paramPayload);
-      return override.hasOverride ? override.description : sourceDescription;
-    } catch {
-      return sourceDescription;
-    }
-  };
-
-  const resolvedDescription = await readDescription();
-
   return {
     channel: {
       name: payload.channel?.channelName || 'неизвестный канал',
       displayName: `${ownerLogin || 'неизвестно'}/${payload.channel?.channelName || 'неизвестный канал'}`,
-      description: resolvedDescription,
+      description: String(payload.channel?.channelDescription || '').trim(),
       ownerName: ownerLogin || 'неизвестно',
     },
     posts,
@@ -818,22 +685,6 @@ function renderBody(screen, navigate, routeKey, channelData, handlers) {
   });
   headActions.append(aboutButton);
 
-  if (channelData.isOwnChannel) {
-    const editButton = document.createElement('button');
-    editButton.type = 'button';
-    editButton.className = 'secondary-btn small-btn';
-    editButton.textContent = '✎';
-    editButton.title = 'Редактировать описание';
-    editButton.addEventListener('click', (event) => {
-      animatePress(event.currentTarget);
-      openEditDescriptionModal({
-        initialValue: channelData.channel.description || '',
-        onSubmit: async (nextValue) => handlers.onEditDescription(nextValue),
-      });
-    });
-    headActions.append(editButton);
-  }
-
   head.append(title);
   head.append(owner, headActions);
 
@@ -1024,25 +875,6 @@ export function render({ navigate, route }) {
     rerender();
   };
 
-  const onEditDescription = async (descriptionText) => {
-    const { login, storagePwd } = requireSigningSession();
-    const selector = routeSelector;
-    const param = channelDescriptionParamKey(selector);
-    if (!param) throw new Error('Идентификатор канала не готов для обновления описания.');
-
-    const value = JSON.stringify({ v: String(descriptionText || '').trim() });
-    await authService.addBlockUserParam({
-      login,
-      storagePwd,
-      param,
-      value,
-    });
-
-    softHaptic(10);
-    showToast('Описание канала сохранено');
-    rerender();
-  };
-
   screen.append(
     renderHeader({
       title: '',
@@ -1085,14 +917,6 @@ export function render({ navigate, route }) {
           }
         },
         onShare: onShare,
-        onEditDescription: async (descriptionText) => {
-          try {
-            await onEditDescription(descriptionText);
-            showStatus('');
-          } catch (error) {
-            throw new Error(toUserMessage(error, 'Не удалось сохранить описание.'));
-          }
-        },
         onSubscribeChannel: async (event) => {
           animatePress(event?.currentTarget);
           try {
diff --git a/shine-UI/js/services/auth-service.js b/shine-UI/js/services/auth-service.js
index e789dec..ea54d9a 100644
--- a/shine-UI/js/services/auth-service.js
+++ b/shine-UI/js/services/auth-service.js
@@ -92,27 +92,6 @@ function opError(op, response) {
   return error;
 }
 
-function isLegacyCreateChannelFormatError(error) {
-  const code = String(error?.code || '').trim().toUpperCase();
-  const text = String(error?.message || '').toLowerCase();
-  if (code === 'BAD_BLOCK_FORMAT') return true;
-  return (
-    text.includes('unknown body type/version') ||
-    text.includes('unknown tech body type/version/subtype') ||
-    text.includes('bad_block_format')
-  );
-}
-
-function channelDescriptionParamKeyFromSelector(selector) {
-  const owner = String(selector?.ownerBlockchainName || '').trim();
-  const rootNo = Number(selector?.channelRootBlockNumber);
-  const rootHash = String(selector?.channelRootBlockHash || '').trim().toLowerCase();
-  if (!owner || !Number.isFinite(rootNo) || rootNo < 0 || !/^[0-9a-f]{64}$/.test(rootHash)) {
-    return '';
-  }
-  return `channel_desc:${owner}:${rootNo}:${rootHash}`;
-}
-
 function makeClientInfo() {
   const ua = navigator.userAgent || 'unknown';
   return ua.slice(0, 50);
@@ -416,26 +395,6 @@ function makeConnectionBodyBytes({
   );
 }
 
-function makeCreateChannelBodyBytes({ lineCode, prevLineNumber, prevLineHashHex, thisLineNumber, channelName }) {
-  const check = validateChannelDisplayName(channelName);
-  if (!check.ok) throw new Error(channelNameErrorText(check.code));
-  const cleanName = check.normalized;
-
-  const nameBytes = utf8Bytes(cleanName);
-  if (nameBytes.length < 1 || nameBytes.length > 255) {
-    throw new Error('Channel name must be 1..255 bytes');
-  }
-
-  return concatBytes(
-    int32Bytes(lineCode),
-    int32Bytes(prevLineNumber),
-    hexToBytes(normalizeHex32(prevLineHashHex)),
-    int32Bytes(thisLineNumber),
-    int8Byte(nameBytes.length),
-    nameBytes
-  );
-}
-
 function normalizeChannelDescription(value) {
   const text = String(value == null ? '' : value).trim().replace(/\s+/g, ' ');
   const bytes = utf8Bytes(text);
@@ -1088,44 +1047,21 @@ export class AuthService {
         thisLineNumber = createdChannels.length + 1;
       }
 
-      const submitCreate = async (useV2) => {
-        const bodyBytes = useV2
-          ? makeCreateChannelBodyV2Bytes({
-            lineCode: 0,
-            prevLineNumber,
-            prevLineHashHex,
-            thisLineNumber,
-            channelName: cleanChannelName,
-            channelDescription: cleanChannelDescription,
-          })
-          : makeCreateChannelBodyBytes({
-            lineCode: 0,
-            prevLineNumber,
-            prevLineHashHex,
-            thisLineNumber,
-            channelName: cleanChannelName,
-          });
-
-        return this.addBlockSigned({
-          login: cleanLogin,
-          storagePwd,
-          msgType: MSG_TYPE_TECH,
-          msgSubType: MSG_SUBTYPE_TECH_CREATE_CHANNEL,
-          msgVersion: useV2 ? CREATE_CHANNEL_BODY_VERSION : 1,
-          bodyBytes,
-        });
-      };
-
-      let payload;
-      let usedLegacyDescriptionFallback = false;
-      let savedDescriptionViaUserParam = false;
-      try {
-        payload = await submitCreate(true);
-      } catch (error) {
-        if (!isLegacyCreateChannelFormatError(error)) throw error;
-        payload = await submitCreate(false);
-        usedLegacyDescriptionFallback = true;
-      }
+      const payload = await this.addBlockSigned({
+        login: cleanLogin,
+        storagePwd,
+        msgType: MSG_TYPE_TECH,
+        msgSubType: MSG_SUBTYPE_TECH_CREATE_CHANNEL,
+        msgVersion: CREATE_CHANNEL_BODY_VERSION,
+        bodyBytes: makeCreateChannelBodyV2Bytes({
+          lineCode: 0,
+          prevLineNumber,
+          prevLineHashHex,
+          thisLineNumber,
+          channelName: cleanChannelName,
+          channelDescription: cleanChannelDescription,
+        }),
+      });
 
       const selector = {
         ownerBlockchainName: blockchainName,
@@ -1133,24 +1069,8 @@ export class AuthService {
         channelRootBlockHash: normalizeHex32(payload?.serverLastGlobalHash, ZERO64),
       };
 
-      if (usedLegacyDescriptionFallback && cleanChannelDescription) {
-        const param = channelDescriptionParamKeyFromSelector(selector);
-        if (!param) {
-          throw new Error('Не удалось сохранить описание канала: некорректный идентификатор канала.');
-        }
-        await this.addBlockUserParam({
-          login: cleanLogin,
-          storagePwd,
-          param,
-          value: JSON.stringify({ v: cleanChannelDescription }),
-        });
-        savedDescriptionViaUserParam = true;
-      }
-
       return {
         ...payload,
-        usedLegacyDescriptionFallback,
-        savedDescriptionViaUserParam,
         channel: {
           ...selector,
         },
diff --git a/shine-UI/js/services/channel-name-rules.js b/shine-UI/js/services/channel-name-rules.js
index de45ea6..80ba197 100644
--- a/shine-UI/js/services/channel-name-rules.js
+++ b/shine-UI/js/services/channel-name-rules.js
@@ -1,10 +1,10 @@
 const MIN_LEN = 3;
 const MAX_LEN = 32;
-const ALLOWED_CHARS_RE = /^[\p{Script=Latin}\p{Script=Cyrillic}0-9 _-]+$/u;
+const ALLOWED_CHARS_RE = /^[A-Za-z0-9_-]+$/;
 
 export function normalizeChannelDisplayName(value) {
   if (value == null) return '';
-  return String(value).trim().replace(/\s+/g, ' ');
+  return String(value).trim();
 }
 
 export function normalizeChannelDescription(value) {
@@ -16,24 +16,9 @@ export function toCanonicalChannelSlug(value) {
   const normalized = normalizeChannelDisplayName(value);
   if (!normalized) return '';
 
-  const lowered = normalized.toLowerCase().replace(/\u0451/g, '\u0435');
-  let out = '';
-  let pendingSeparator = false;
-
-  for (const ch of lowered) {
-    if (ch === ' ' || ch === '_' || ch === '-') {
-      pendingSeparator = out.length > 0;
-      continue;
-    }
-    if (!/[\p{Script=Latin}\p{Script=Cyrillic}0-9]/u.test(ch)) {
-      return '';
-    }
-    if (pendingSeparator && out.length > 0) out += '-';
-    out += ch;
-    pendingSeparator = false;
-  }
-
-  return out.replace(/-+$/g, '');
+  const lowered = normalized.toLowerCase();
+  if (!ALLOWED_CHARS_RE.test(lowered)) return '';
+  return lowered;
 }
 
 export function validateChannelDisplayName(value) {
@@ -73,7 +58,7 @@ export function channelNameErrorText(code) {
     case 'too_long':
       return 'Название слишком длинное: максимум 32 символа.';
     case 'bad_chars':
-      return 'Разрешены кириллица, латиница, цифры, пробел, _ и -.';
+      return 'Разрешены только латиница, цифры, _ и -.';
     case 'reserved':
       return 'Название "0" зарезервировано.';
     default:
diff --git a/shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java b/shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java
index 139f8d2..ee5aa2e 100644
--- a/shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java
+++ b/shine-server-db/src/main/java/shine/db/channels/ChannelNameRules.java
@@ -7,13 +7,13 @@ public final class ChannelNameRules {
     private static final int MIN_DISPLAY_NAME_LENGTH = 3;
     private static final int MAX_DISPLAY_NAME_LENGTH = 32;
     private static final Pattern DISPLAY_ALLOWED_PATTERN =
-            Pattern.compile("^[\\p{IsLatin}\\p{IsCyrillic}0-9 _-]+$");
+            Pattern.compile("^[A-Za-z0-9_-]+$");
 
     private ChannelNameRules() {}
 
     public static String normalizeDisplayName(String value) {
         if (value == null) return "";
-        return value.trim().replaceAll("\\s+", " ");
+        return value.trim();
     }
 
     public static String requireValidDisplayNameForCreate(String rawName) {
@@ -40,45 +40,10 @@ public final class ChannelNameRules {
             throw new IllegalArgumentException("channelName is blank");
         }
 
-        String lowered = normalized.toLowerCase(Locale.ROOT).replace('\u0451', '\u0435');
-        StringBuilder slug = new StringBuilder(lowered.length());
-        boolean pendingSeparator = false;
-
-        for (int i = 0; i < lowered.length(); ) {
-            int cp = lowered.codePointAt(i);
-            i += Character.charCount(cp);
-
-            if (cp == ' ' || cp == '_' || cp == '-') {
-                pendingSeparator = slug.length() > 0;
-                continue;
-            }
-
-            if (!isLatinOrCyrillicOrDigit(cp)) {
-                throw new IllegalArgumentException("channelName contains unsupported characters");
-            }
-
-            if (pendingSeparator && slug.length() > 0) {
-                slug.append('-');
-            }
-            pendingSeparator = false;
-            slug.appendCodePoint(cp);
+        String lowered = normalized.toLowerCase(Locale.ROOT);
+        if (!DISPLAY_ALLOWED_PATTERN.matcher(lowered).matches()) {
+            throw new IllegalArgumentException("channelName contains unsupported characters");
         }
-
-        int len = slug.length();
-        if (len > 0 && slug.charAt(len - 1) == '-') {
-            slug.deleteCharAt(len - 1);
-        }
-
-        if (slug.length() == 0) {
-            throw new IllegalArgumentException("channelName canonical slug is empty");
-        }
-
-        return slug.toString();
-    }
-
-    private static boolean isLatinOrCyrillicOrDigit(int cp) {
-        if (Character.isDigit(cp)) return true;
-        Character.UnicodeScript script = Character.UnicodeScript.of(cp);
-        return script == Character.UnicodeScript.LATIN || script == Character.UnicodeScript.CYRILLIC;
+        return lowered;
     }
 }