diff --git a/ordinis-admin-ui/src/components/timetravel/TimeTravelModal.tsx b/ordinis-admin-ui/src/components/timetravel/TimeTravelModal.tsx
index d6c6e9a..031171f 100644
--- a/ordinis-admin-ui/src/components/timetravel/TimeTravelModal.tsx
+++ b/ordinis-admin-ui/src/components/timetravel/TimeTravelModal.tsx
@@ -1,8 +1,11 @@
 import { useMemo, useState } from 'react'
 import { useTranslation } from 'react-i18next'
 import { ClockCounterClockwiseIcon, CaretLeftIcon, CaretRightIcon, XIcon } from '@phosphor-icons/react'
-import { Dialog, DialogContent, DialogTitle, DialogDescription } from '@/ui'
-import type { DictionaryDetail } from '@/api/client'
+import { Badge, Dialog, DialogContent, DialogTitle, DialogDescription } from '@/ui'
+import type { ChangelogEntry, DictionaryDetail } from '@/api/client'
+import { useChangelog } from '@/api/queries'
+import { kindBadgeVariant, kindIcon, kindLabel } from '@/components/changelog/kind-meta'
+import { ChangelogDiffModal } from '@/components/changelog/ChangelogDiffModal'
 import { cn } from '@/lib/utils'
 
 /**
@@ -18,8 +21,9 @@ import { cn } from '@/lib/utils'
  *   <li><b>Slider</b>: HTML range + overlay version markers (top) + date
  *       markers (bottom). Cursor — dark circle.</li>
  *   <li><b>Tabs</b>: Что изменилось / Записи на момент / Структура и поля.
- *       Backend diff endpoints отсутствуют — показываем empty/placeholder
- *       состояния с подсказкой backend pending.</li>
+ *       «Что изменилось» — wired через {@code useChangelog} + filter
+ *       events с {@code publishedAt >= picked}. Diff button открывает
+ *       {@link ChangelogDiffModal} с full before/after JSON.</li>
  *   <li><b>Footer</b>: disclaimer + Закрыть / "Открыть v{X} как readonly" CTA</li>
  * </ul>
  *
@@ -70,6 +74,19 @@ export function TimeTravelModal({
   const [picked, setPicked] = useState<number>(valueMs)
   const [step, setStep] = useState<StepMode>('version')
   const [tab, setTab] = useState<'changes' | 'records' | 'schema'>('changes')
+  /** Open ChangelogDiffModal для конкретной entry — full before/after JSON. */
+  const [diffEntryId, setDiffEntryId] = useState<number | undefined>(undefined)
+
+  // Changelog для compare-since-picked: показываем events после picked moment.
+  // Размер 200 покрывает типичные dict'ы (5-50 events); cursor pagination
+  // можно добавить когда что-то будет с этим больше.
+  const changelog = useChangelog(detail.name, 200)
+  const eventsSincePicked = useMemo<ChangelogEntry[]>(() => {
+    if (!changelog.data) return []
+    return changelog.data.entries.filter(
+      (e) => new Date(e.publishedAt).getTime() >= picked,
+    )
+  }, [changelog.data, picked])
 
   // Range: от min(marks, createdAt) до now+padding.
   const createdMs = Date.parse(detail.createdAt)
@@ -248,7 +265,7 @@ export function TimeTravelModal({
               active={tab === 'changes'}
               onClick={() => setTab('changes')}
               label={t('timeTravel.tabs.changes', { defaultValue: 'Что изменилось' })}
-              count={0}
+              count={eventsSincePicked.length}
             />
             <TabBtn
               active={tab === 'records'}
@@ -265,39 +282,47 @@ export function TimeTravelModal({
         </div>
 
         {/* Tab content */}
-        <div className="px-6 py-10 min-h-[180px] flex items-center justify-center text-mute text-body">
+        <div className="px-6 py-6 min-h-[180px]">
           {tab === 'changes' && (
-            <span>
-              {isAtNow
-                ? t('timeTravel.empty.same', {
-                    defaultValue: 'Между этими версиями нет изменений.',
-                  })
-                : t('timeTravel.placeholder.changes', {
-                    defaultValue:
-                      'Diff endpoint /api/v1/dictionaries/{name}/changelog · backend pending.',
-                  })}
-            </span>
+            <ChangesTabContent
+              isAtNow={isAtNow}
+              loading={changelog.isLoading}
+              events={eventsSincePicked}
+              onOpenDiff={(id) => setDiffEntryId(id)}
+            />
           )}
           {tab === 'records' && (
-            <span>
-              {pickedDate.toLocaleDateString(undefined, { dateStyle: 'long' })} ·{' '}
-              {totalRecords} {pluralRu(totalRecords, 'запись', 'записи', 'записей')}
-            </span>
+            <div className="flex items-center justify-center text-mute text-body">
+              <span>
+                {pickedDate.toLocaleDateString(undefined, { dateStyle: 'long' })} ·{' '}
+                {totalRecords} {pluralRu(totalRecords, 'запись', 'записи', 'записей')}
+              </span>
+            </div>
           )}
           {tab === 'schema' && (
-            <span>
-              v{detail.schemaVersion} ·{' '}
-              {Object.keys(detail.schemaJson.properties ?? {}).length}{' '}
-              {pluralRu(
-                Object.keys(detail.schemaJson.properties ?? {}).length,
-                'поле',
-                'поля',
-                'полей',
-              )}
-            </span>
+            <div className="flex items-center justify-center text-mute text-body">
+              <span>
+                v{detail.schemaVersion} ·{' '}
+                {Object.keys(detail.schemaJson.properties ?? {}).length}{' '}
+                {pluralRu(
+                  Object.keys(detail.schemaJson.properties ?? {}).length,
+                  'поле',
+                  'поля',
+                  'полей',
+                )}
+              </span>
+            </div>
           )}
         </div>
 
+        {/* Per-event diff modal — fires lazy fetch /changelog/{id}/diff. */}
+        <ChangelogDiffModal
+          open={diffEntryId !== undefined}
+          onClose={() => setDiffEntryId(undefined)}
+          dictionaryName={detail.name}
+          entryId={diffEntryId}
+        />
+
         {/* Footer */}
         <div className="px-6 py-3 border-t border-line flex items-center justify-between gap-3 mt-auto">
           <div className="text-cap text-mute tracking-[0.14em] uppercase">
@@ -555,3 +580,109 @@ function pluralRu(n: number, one: string, few: string, many: string): string {
   if (mod10 >= 2 && mod10 <= 4 && (mod100 < 10 || mod100 >= 20)) return few
   return many
 }
+
+/**
+ * «Что изменилось» tab — список changelog events которые произошли
+ * после picked moment. Каждый event с kind-aware icon/badge + summary
+ * counts + кнопка «Diff» открывает {@link ChangelogDiffModal} с full
+ * before/after JSON.
+ *
+ * <p>isAtNow={true} → empty state «нет изменений». isLoading → skeleton.
+ * events=[] → «между этими версиями нет изменений».
+ */
+function ChangesTabContent({
+  isAtNow,
+  loading,
+  events,
+  onOpenDiff,
+}: {
+  isAtNow: boolean
+  loading: boolean
+  events: ChangelogEntry[]
+  onOpenDiff: (id: number) => void
+}) {
+  const { t } = useTranslation()
+
+  if (isAtNow) {
+    return (
+      <div className="flex items-center justify-center text-mute text-body">
+        {t('timeTravel.empty.same', {
+          defaultValue: 'Между этими версиями нет изменений.',
+        })}
+      </div>
+    )
+  }
+  if (loading) {
+    return (
+      <div className="space-y-2">
+        {[1, 2, 3].map((i) => (
+          <div
+            key={i}
+            className="h-12 rounded-lg border border-line bg-surface-2/40 animate-pulse"
+          />
+        ))}
+      </div>
+    )
+  }
+  if (events.length === 0) {
+    return (
+      <div className="flex items-center justify-center text-mute text-body">
+        {t('timeTravel.empty.noEvents', {
+          defaultValue: 'Между этими моментами ничего не менялось.',
+        })}
+      </div>
+    )
+  }
+
+  return (
+    <ul className="space-y-2">
+      {events.map((e) => {
+        const Icon = kindIcon(e.kind)
+        const added = e.diff.added.length
+        const changed = e.diff.changed.length
+        const removed = e.diff.removed.length
+        return (
+          <li
+            key={e.id}
+            className="rounded-lg border border-line bg-surface p-3 flex items-start gap-3"
+          >
+            <Icon weight="duotone" size={20} className="text-mute shrink-0 mt-0.5" />
+            <div className="flex-1 min-w-0">
+              <div className="flex items-baseline gap-2 flex-wrap">
+                {e.version && (
+                  <span className="text-mono text-cell text-ink font-semibold tabular-nums">
+                    v{e.version}
+                  </span>
+                )}
+                <Badge variant={kindBadgeVariant(e.kind)}>{kindLabel(e.kind, t)}</Badge>
+                <span className="text-mono text-cap text-mute tabular-nums ml-auto">
+                  {added > 0 && <span className="text-aurora">+{added}</span>}
+                  {added > 0 && (changed > 0 || removed > 0) && ' '}
+                  {changed > 0 && <span className="text-warn">~{changed}</span>}
+                  {changed > 0 && removed > 0 && ' '}
+                  {removed > 0 && <span className="text-danger">−{removed}</span>}
+                </span>
+              </div>
+              {e.headers && (
+                <div className="text-body text-ink mt-0.5 truncate">{e.headers}</div>
+              )}
+              <div className="flex items-center gap-3 mt-1 text-cell text-mute">
+                <span className="tabular-nums">
+                  {new Date(e.publishedAt).toLocaleString()}
+                </span>
+                <span className="font-mono">{e.publishedBy.name}</span>
+                <button
+                  type="button"
+                  onClick={() => onOpenDiff(e.id)}
+                  className="ml-auto text-accent hover:underline"
+                >
+                  {t('timeTravel.action.diff', { defaultValue: 'Diff' })} →
+                </button>
+              </div>
+            </div>
+          </li>
+        )
+      })}
+    </ul>
+  )
+}
diff --git a/ordinis-admin-ui/src/i18n.ts b/ordinis-admin-ui/src/i18n.ts
index 73713a9..3489ea5 100644
--- a/ordinis-admin-ui/src/i18n.ts
+++ b/ordinis-admin-ui/src/i18n.ts
@@ -201,6 +201,8 @@ i18n
           'queryError.client.body': 'Сервер отклонил запрос.',
           'queryError.generic.title': 'Не удалось загрузить данные',
           'queryError.generic.body': 'Что-то пошло не так. Попробуйте ещё раз.',
+          'timeTravel.empty.noEvents': 'Между этими моментами ничего не менялось.',
+          'timeTravel.action.diff': 'Diff',
           'webhooks.deliveries.col.eventId': 'Event ID',
           'webhooks.deliveries.col.attempts': 'Попыток',
           'webhooks.deliveries.col.lastAttempt': 'Последняя попытка',
@@ -866,6 +868,8 @@ i18n
           'queryError.client.body': 'The server rejected the request.',
           'queryError.generic.title': 'Failed to load data',
           'queryError.generic.body': 'Something went wrong. Please try again.',
+          'timeTravel.empty.noEvents': 'Nothing changed between these moments.',
+          'timeTravel.action.diff': 'Diff',
           'webhooks.deliveries.col.eventId': 'Event ID',
           'webhooks.deliveries.col.attempts': 'Attempts',
           'webhooks.deliveries.col.lastAttempt': 'Last attempt',