diff --git a/src/components/Column.tsx b/src/components/Column.tsx
index 5949e6c..e84074e 100644
--- a/src/components/Column.tsx
+++ b/src/components/Column.tsx
@@ -42,7 +42,7 @@ const Column: Component<ColumnProps> = (props) => {
     <TimelineContext.Provider value={timelineState}>
       <div
         ref={columnDivRef}
-        class="relative flex w-[80vw] shrink-0 snap-center snap-always flex-col border-r sm:snap-align-none"
+        class="flex w-[80vw] shrink-0 snap-center snap-always flex-col border-r sm:snap-align-none"
         classList={{
           'sm:w-[500px]': width() === 'widest',
           'sm:w-[350px]': width() === 'wide',
@@ -50,14 +50,21 @@ const Column: Component<ColumnProps> = (props) => {
           'sm:w-[270px]': width() === 'narrow',
         }}
       >
-        <div class="flex h-8 shrink-0 items-center border-b bg-white px-2">
-          {/* <span class="column-icon">🏠</span> */}
-          <span class="column-name">{props.name}</span>
-        </div>
-        <div class="flex flex-col overflow-y-scroll scroll-smooth">{props.children}</div>
-        <Show when={timelineState.timelineState.content} keyed>
+        <Show
+          when={timelineState.timelineState.content}
+          keyed
+          fallback={
+            <>
+              <div class="flex h-8 shrink-0 items-center border-b bg-white px-2">
+                {/* <span class="column-icon">🏠</span> */}
+                <span class="column-name">{props.name}</span>
+              </div>
+              <div class="flex flex-col overflow-y-scroll scroll-smooth">{props.children}</div>
+            </>
+          }
+        >
           {(timeline) => (
-            <div class="absolute h-full w-full bg-white">
+            <div class="h-full w-full bg-white">
               <div class="flex h-8 shrink-0 items-center border-b bg-white px-2">
                 <button
                   class="flex w-full items-center gap-1"
diff --git a/src/components/ContextMenu.tsx b/src/components/ContextMenu.tsx
new file mode 100644
index 0000000..d0ca0bc
--- /dev/null
+++ b/src/components/ContextMenu.tsx
@@ -0,0 +1,100 @@
+import { createSignal, onCleanup, createEffect, For, type Component, type JSX } from 'solid-js';
+
+export type MenuItem = {
+  content: () => JSX.Element;
+  onSelect?: () => void;
+};
+
+export type ContextMenuProps = {
+  menu: MenuItem[];
+  children: JSX.Element;
+};
+
+export type MenuDisplayProps = {
+  menu: MenuItem[];
+  onClose: () => void;
+};
+
+export type MenuItemDisplayProps = {
+  item: MenuItem;
+  onClose: () => void;
+};
+
+const MenuItemDisplay: Component<MenuItemDisplayProps> = (props) => {
+  const handleClick = () => {
+    props.item?.onSelect?.();
+    props.onClose();
+  };
+
+  return (
+    <li class="border-b hover:bg-stone-200">
+      <button class="px-4 py-1" onClick={handleClick}>
+        {props.item.content()}
+      </button>
+    </li>
+  );
+};
+
+const MenuDisplay: Component<MenuDisplayProps> = (props) => {
+  return (
+    <ul>
+      <For each={props.menu}>
+        {(item) => <MenuItemDisplay item={item} onClose={props.onClose} />}
+      </For>
+    </ul>
+  );
+};
+
+const ContextMenu: Component<ContextMenuProps> = (props) => {
+  let menuRef: HTMLDivElement | undefined;
+
+  const [isOpen, setIsOpen] = createSignal(false);
+
+  const handleClickOutside = (ev: MouseEvent) => {
+    const target = ev.target as HTMLElement;
+    if (target != null && !menuRef?.contains(target)) {
+      setIsOpen(false);
+    }
+  };
+  const addClickOutsideHandler = () => {
+    document.addEventListener('mousedown', handleClickOutside);
+  };
+  const removeClickOutsideHandler = () => {
+    document.removeEventListener('mousedown', handleClickOutside);
+  };
+
+  const handleClick: JSX.EventHandler<HTMLButtonElement, MouseEvent> = (ev) => {
+    if (menuRef == null) return;
+
+    const buttonRect = ev.target.getBoundingClientRect();
+    menuRef.style.left = `${buttonRect.left}px`;
+    menuRef.style.top = `${buttonRect.top + buttonRect.height}px`;
+
+    setIsOpen(true);
+  };
+
+  createEffect(() => {
+    if (isOpen()) {
+      addClickOutsideHandler();
+    } else {
+      removeClickOutsideHandler();
+    }
+  });
+
+  onCleanup(() => removeClickOutsideHandler());
+
+  return (
+    <div>
+      <button onClick={handleClick}>{props.children}</button>
+      <div
+        ref={menuRef}
+        class="absolute z-20 min-w-[48px] rounded border bg-white shadow-md"
+        classList={{ hidden: !isOpen(), block: isOpen() }}
+      >
+        <MenuDisplay menu={props.menu} onClose={() => setIsOpen(false)} />
+      </div>
+    </div>
+  );
+};
+
+export default ContextMenu;
diff --git a/src/components/textNote/TextNoteDisplay.tsx b/src/components/textNote/TextNoteDisplay.tsx
index 20234c0..81397ea 100644
--- a/src/components/textNote/TextNoteDisplay.tsx
+++ b/src/components/textNote/TextNoteDisplay.tsx
@@ -1,5 +1,5 @@
 import { Show, For, createSignal, createMemo, onMount, type JSX, type Component } from 'solid-js';
-import type { Event as NostrEvent } from 'nostr-tools';
+import { nip19, type Event as NostrEvent } from 'nostr-tools';
 import { createMutation } from '@tanstack/solid-query';
 
 import HeartOutlined from 'heroicons/24/outline/heart.svg';
@@ -31,6 +31,7 @@ import NotePostForm from '@/components/NotePostForm';
 import ensureNonNull from '@/utils/ensureNonNull';
 import npubEncodeFallback from '@/utils/npubEncodeFallback';
 import useSubscription from '@/nostr/useSubscription';
+import ContextMenu, { MenuItem } from '../ContextMenu';
 
 export type TextNoteDisplayProps = {
   event: NostrEvent;
@@ -38,9 +39,26 @@ export type TextNoteDisplayProps = {
   actions?: boolean;
 };
 
+const { noteEncode } = nip19;
+
 const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
   let contentRef: HTMLDivElement | undefined;
 
+  const menu: MenuItem[] = [
+    {
+      content: () => 'IDをコピー',
+      onSelect: () => {
+        navigator.clipboard.writeText(noteEncode(props.event.id)).catch((err) => window.alert(err));
+      },
+    },
+    {
+      content: () => 'JSONとしてコピー',
+      onSelect: () => {
+        navigator.clipboard.writeText(JSON.stringify(props.event)).catch((err) => window.alert(err));
+      },
+    },
+  ];
+
   const { config } = useConfig();
   const formatDate = useFormatDate();
   const pubkey = usePubkey();
@@ -51,7 +69,6 @@ const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
   const closeReplyForm = () => setShowReplyForm(false);
   const [showOverflow, setShowOverflow] = createSignal(false);
   const [overflow, setOverflow] = createSignal(false);
-  const [showMenu, setShowMenu] = createSignal(false);
 
   const event = createMemo(() => eventWrapper(props.event));
 
@@ -88,13 +105,11 @@ const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
     mutationKey: ['publishDeprecatedRepost', event().id],
     mutationFn: commands.publishDeprecatedRepost.bind(commands),
     onSuccess: () => {
-      console.log('succeeded to publish deprecated reposts');
-      invalidateDeprecatedReposts().catch((err) =>
-        console.error('failed to refetch deprecated reposts', err),
-      );
+      console.log('succeeded to publish reposts');
+      invalidateDeprecatedReposts().catch((err) => console.error('failed to refetch reposts', err));
     },
     onError: (err) => {
-      console.error('failed to publish deprecated repost: ', err);
+      console.error('failed to publish repost: ', err);
     },
   });
 
@@ -205,10 +220,12 @@ const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
               </div>
             </button>
             <div class="created-at shrink-0">
-              <button
+              <a
+                href={`nostr:${noteEncode(event().id)}`}
                 type="button"
                 class="hover:underline"
-                onClick={() => {
+                onClick={(ev) => {
+                  ev.preventDefault();
                   timelineContext?.setTimeline({
                     type: 'Replies',
                     event: props.event,
@@ -216,7 +233,7 @@ const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
                 }}
               >
                 {createdAt()}
-              </button>
+              </a>
             </div>
           </div>
           <div
@@ -318,15 +335,11 @@ const TextNoteDisplay: Component<TextNoteDisplayProps> = (props) => {
                 </Show>
               </div>
               <div>
-                <button
-                  class="h-4 w-4 text-zinc-400"
-                  onClick={(ev) => {
-                    ev.stopPropagation();
-                    setShowMenu((current) => !current);
-                  }}
-                >
-                  <EllipsisHorizontal />
-                </button>
+                <ContextMenu menu={menu}>
+                  <span class="inline-block h-4 w-4 text-zinc-400">
+                    <EllipsisHorizontal />
+                  </span>
+                </ContextMenu>
               </div>
             </div>
           </Show>
diff --git a/src/core/event.ts b/src/core/event.ts
index e5ca4b1..6db662c 100644
--- a/src/core/event.ts
+++ b/src/core/event.ts
@@ -20,7 +20,7 @@ const eventWrapper = (event: NostrEvent) => {
     get rawEvent(): NostrEvent {
       return event;
     },
-    get id(): string | undefined {
+    get id(): string {
       return event.id;
     },
     get pubkey(): string {