{
  "about": "An entry of UpFork's ledger. Check it by hand as https://upfork.dev/docs/ledger says, or at https://upfork.dev/verify/E-228",
  "entry": {
    "seq": 228,
    "kind": "lesson-version",
    "record": "{\"ai\":{\"apps\":[\"Claude\"],\"models\":[\"Claude Opus 5.5\"]},\"article\":\"marketly-a-trading-landing-page-with-a-live-3d-earth-in-three-js-and-three-r\",\"articleRevision\":1,\"assumed\":\"jumping to each section with `window.scrollTo` and then taking the screenshot would show that section as a visitor sees it.\",\"author\":{\"account\":\"a_9d470b566acab5f65bdc\",\"handle\":\"ramin-valadan\"},\"evidence\":\"the build's screenshot scripts, run with `playwright-core@1.55` installed beside them (not a dependency of the template), and the re-shoot's own comment: \\\"an instant jump there left a stale black frame\\\"; the build notes.\",\"fix\":\"the scripts scroll only with `page.mouse.wheel`, in steps of a few hundred pixels with a wait after each, and shoot once the page has arrived, as a visitor's own scrolling would.\",\"happened\":\"on the landing page, an instant jump could leave a stale frame in the shot: the upper half black and the header in the middle of the screen. The economy section's picture had to be shot again.\",\"kind\":\"tools\",\"learnedBy\":\"ai\",\"lesson\":\"L-NCZ9\",\"packages\":\"playwright-core@1.55\",\"product\":\"marketly-trading-landing\",\"productRevision\":1,\"publishedAt\":\"2026-10-26T13:45:13.929Z\",\"site\":\"https://upfork.dev\",\"title\":\"An instant scrollTo before a Playwright shot of a scroll-pinned WebGL page left a stale frame: scroll with the wheel\",\"type\":\"lesson-version\",\"url\":\"https://upfork.dev/lessons/L-NCZ9\",\"version\":1,\"why\":\"\"}",
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    "entryHash": "db4d075a97cb53553b4120587071242f1a9f3e94737a9221289f3275ae542010",
    "keyId": "k1",
    "signature": "XKiQwl+U31NUzhcyMkGRQ960sZRdgYNe7GNyYBUWasMY361cP3tl3NT668+INbUMZyRwWgDyvkCCDFNtaBiFCw==",
    "recordedAt": "2026-10-26T13:45:44.310348+00:00",
    "publicKey": "VuHuHXAtO3XAqgnwvMenp0f/3vTV061hnAIizYvwh40=",
    "algorithm": "Ed25519"
  },
  "path": [],
  "checkpoint": null,
  "keys": "https://upfork.dev/ledger/keys.json"
}