diff --git a/docs/catalog/blocks/hw-scribble-transition.mdx b/docs/catalog/blocks/hw-scribble-transition.mdx
new file mode 100644
index 000000000..cc49439c7
--- /dev/null
+++ b/docs/catalog/blocks/hw-scribble-transition.mdx
@@ -0,0 +1,44 @@
+---
+title: "Scribble Transition"
+description: "Overlay transition: scribble bands accumulate to cover the frame with a solid backstop, the host cuts beneath, and the scribble clears"
+---
+
+# Scribble Transition
+
+Overlay transition: scribble bands accumulate to cover the frame with a solid backstop, the host cuts beneath, and the scribble clears
+
+`handwritten` `transition` `wipe`
+
+<video className="w-full aspect-video rounded-xl object-cover bg-zinc-100 dark:bg-zinc-800" src="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/hw-scribble-transition.mp4" poster="https://static.heygen.ai/hyperframes-oss/docs/images/catalog/blocks/hw-scribble-transition.png" autoPlay muted loop playsInline />
+
+## Install
+
+<CodeGroup>
+
+```bash Terminal
+npx hyperframes add hw-scribble-transition
+```
+
+</CodeGroup>
+
+## Details
+
+| Property | Value |
+| --- | --- |
+| Type | Block |
+| Dimensions | 1920×1080 |
+| Duration | 2.2s |
+
+## Files
+
+| File | Target | Type |
+| --- | --- | --- |
+| `hw-scribble-transition.html` | `compositions/hw-scribble-transition.html` | hyperframes:composition |
+
+## Usage
+
+After installing, add the block to your host composition:
+
+```html
+<div data-composition-id="hw-scribble-transition" data-composition-src="compositions/hw-scribble-transition.html" data-start="0" data-duration="2.2" data-track-index="1" data-width="1920" data-height="1080"></div>
+```
diff --git a/registry/blocks/hw-scribble-transition/hw-scribble-transition.html b/registry/blocks/hw-scribble-transition/hw-scribble-transition.html
new file mode 100644
index 000000000..2e7c6983c
--- /dev/null
+++ b/registry/blocks/hw-scribble-transition/hw-scribble-transition.html
@@ -0,0 +1,145 @@
+<!doctype html>
+<html lang="en">
+  <head>
+    <meta charset="utf-8" />
+    <script src="https://cdn.jsdelivr.net/npm/gsap@3.14.2/dist/gsap.min.js"></script>
+    <style>
+      *,
+      *::before,
+      *::after {
+        margin: 0;
+        padding: 0;
+        box-sizing: border-box;
+      }
+      body {
+        background: transparent;
+        overflow: hidden;
+      }
+      #hw-st-root {
+        --hw-accent: #6d6dff;
+
+        position: relative;
+        width: 1920px;
+        height: 1080px;
+        overflow: hidden;
+        background: transparent;
+      }
+      #hw-st-svg {
+        position: absolute;
+        inset: 0;
+        width: 100%;
+        height: 100%;
+      }
+      #hw-st-svg path {
+        fill: none;
+        stroke: var(--hw-accent);
+        stroke-linecap: round;
+        stroke-linejoin: round;
+      }
+      /* solid backstop that guarantees full coverage at the midpoint */
+      #hw-st-solid {
+        position: absolute;
+        inset: 0;
+        background: var(--hw-accent);
+        opacity: 0;
+      }
+    </style>
+  </head>
+  <body>
+    <div
+      id="hw-st-root"
+      data-composition-id="hw-scribble-transition"
+      data-start="0"
+      data-duration="2.2"
+      data-width="1920"
+      data-height="1080"
+    >
+      <svg id="hw-st-svg" viewBox="0 0 1920 1080" data-layout-allow-overflow></svg>
+      <div id="hw-st-solid"></div>
+      <div
+        id="hw-st-drv"
+        class="clip"
+        data-start="0"
+        data-duration="2.2"
+        data-track-index="0"
+        style="position:absolute;width:1px;height:1px;opacity:0;pointer-events:none"
+      ></div>
+    </div>
+    <script>
+      (function () {
+        window.__timelines = window.__timelines || {};
+
+        /* ---- published parameters ----
+           Overlay-transition (the mk-clone-wall model): fat scribble strokes
+           sweep across and cover the frame, a solid backstop guarantees full
+           coverage at the midpoint (the host hard-cuts beneath, ~0.9-1.4s
+           local), then everything clears. Place spanning the host's cut. */
+        var CONFIG = {
+          color: null, // css color; null = --hw-accent purple
+          bands: 7, // horizontal scribble bands
+          strokeScale: 1.0,
+          seed: 17,
+        };
+
+        var W = 1920,
+          H = 1080,
+          DUR = 2.2;
+
+        window.hwHash = function (n, seed) {
+          var x = Math.sin(n * 127.1 + (seed || 1) * 311.7) * 43758.5453;
+          return (x - Math.floor(x)) * 2 - 1;
+        };
+
+        var root = document.getElementById("hw-st-root");
+        if (CONFIG.color) root.style.setProperty("--hw-accent", CONFIG.color);
+        var NS = "http://www.w3.org/2000/svg";
+        var svg = document.getElementById("hw-st-svg");
+
+        /* fat zigzag bands, each covering a horizontal slice edge-to-edge */
+        var bandH = H / CONFIG.bands;
+        var paths = [];
+        for (var b = 0; b < CONFIG.bands; b++) {
+          var y0 = b * bandH + bandH / 2;
+          var d = "M -80 " + (y0 + window.hwHash(b * 17, CONFIG.seed) * 20).toFixed(1);
+          var zigs = 7;
+          for (var i = 1; i <= zigs; i++) {
+            var x = (W + 160) * (i / zigs) - 80;
+            var y = y0 + (i % 2 ? -1 : 1) * bandH * 0.32 + window.hwHash(b * 17 + i, CONFIG.seed) * 16;
+            d += " L " + x.toFixed(1) + " " + y.toFixed(1);
+          }
+          var p = document.createElementNS(NS, "path");
+          p.setAttribute("d", d);
+          p.setAttribute("stroke-width", Math.ceil(bandH * 0.85 * CONFIG.strokeScale));
+          p.setAttribute("id", "hw-st-band-" + b);
+          svg.appendChild(p);
+          paths.push(p);
+        }
+
+        var tl = gsap.timeline({ paused: true });
+
+        /* 0-0.85: bands scribble on (staggered, alternating direction) */
+        paths.forEach(function (p, i) {
+          var len = p.getTotalLength();
+          gsap.set(p, { strokeDasharray: len, strokeDashoffset: i % 2 ? -len : len });
+          tl.to(p, { strokeDashoffset: 0, duration: 0.55, ease: "power2.in" }, 0.04 * i);
+        });
+        /* 0.8: solid backstop snaps in beneath the finished scribble — full
+           coverage guaranteed 0.85-1.35 (the host's cut window) */
+        tl.to("#hw-st-solid", { opacity: 1, duration: 0.12, ease: "none" }, 0.8);
+
+        /* 1.35-1.95: clear — bands scribble off the other way, backstop lifts */
+        tl.to("#hw-st-solid", { opacity: 0, duration: 0.15, ease: "none" }, 1.42);
+        paths.forEach(function (p, i) {
+          var len = p.getTotalLength();
+          tl.to(p, { strokeDashoffset: i % 2 ? len : -len, duration: 0.5, ease: "power2.out" }, 1.42 + 0.035 * i);
+        });
+
+        /* hard kill the moment the last band clears (learning: kill roots
+           when the final fade completes, not at DUR) */
+        tl.set(root, { visibility: "hidden" }, 2.17);
+
+        window.__timelines["hw-scribble-transition"] = tl;
+      })();
+    </script>
+  </body>
+</html>
diff --git a/registry/blocks/hw-scribble-transition/registry-item.json b/registry/blocks/hw-scribble-transition/registry-item.json
new file mode 100644
index 000000000..d996159e1
--- /dev/null
+++ b/registry/blocks/hw-scribble-transition/registry-item.json
@@ -0,0 +1,24 @@
+{
+  "$schema": "https://hyperframes.heygen.com/schema/registry-item.json",
+  "name": "hw-scribble-transition",
+  "type": "hyperframes:block",
+  "title": "Scribble Transition",
+  "description": "Overlay transition: scribble bands accumulate to cover the frame with a solid backstop, the host cuts beneath, and the scribble clears",
+  "tags": [
+    "handwritten",
+    "transition",
+    "wipe"
+  ],
+  "dimensions": {
+    "width": 1920,
+    "height": 1080
+  },
+  "duration": 2.2,
+  "files": [
+    {
+      "path": "hw-scribble-transition.html",
+      "target": "compositions/hw-scribble-transition.html",
+      "type": "hyperframes:composition"
+    }
+  ]
+}
diff --git a/registry/registry.json b/registry/registry.json
index 229dc387e..0ba42d225 100644
--- a/registry/registry.json
+++ b/registry/registry.json
@@ -583,6 +583,10 @@
       "name": "hw-frame",
       "type": "hyperframes:block"
     },
+    {
+      "name": "hw-scribble-transition",
+      "type": "hyperframes:block"
+    },
     {
       "name": "parallax-zoom",
       "type": "hyperframes:component"
