CONFERENCE METADATA — incomplete historical coverage; source presence is not proof of delivery.
Research dataset: Lukas Walter, Clemens Sauerwein, Daniel Woods, InfoSec.pptx, https://doi.org/10.5281/zenodo.15989593, CC BY 4.0 https://creativecommons.org/licenses/by/4.0/. Changes: metadata extraction, exact-match reconciliation and uncertainty flags. No endorsement implied.

{
  "id": "ccc-437617bc-0429-5bce-b1df-38bd00d87868",
  "title": "Tanmatsu/WHY2025 badge PCB design",
  "presenters": [
    "Renze Nicolai",
    "Paul Honig"
  ],
  "event": "HackerHotel 2025",
  "year": "2025",
  "source_url": "https://media.ccc.de/v/2025-188-tanmatsu-why2025-badge-pcb-design",
  "source_kind": "CCC recording catalog",
  "source_file": "ccc-hackerhotel2025.json",
  "rights": "Metadata and source links only; abstracts, biographies, transcripts and media not republished",
  "delivery_status": "Not independently verified",
  "title_status": "source supplied",
  "presenter_status": "source supplied",
  "media": [
    {
      "kind": "recording page",
      "url": "https://media.ccc.de/v/2025-188-tanmatsu-why2025-badge-pcb-design"
    }
  ],
  "provenance": [
    {
      "event": "hackerhotel2025",
      "title": "HackerHotel 2025",
      "source": "https://api.media.ccc.de/public/conferences/hackerhotel2025",
      "file": "ccc-hackerhotel2025.json",
      "sha256": "e727d04945fe7fc2268d9f1c348444a5c0b8fc5b46306854ce4625dcbddcaaaa",
      "checked": "2026-10-16T03:46:51Z",
      "source_records": 41
    }
  ],
  "source_guid": "437617bc-0429-5bce-b1df-38bd00d87868",
  "source_event_api": "https://api.media.ccc.de/public/events/437617bc-0429-5bce-b1df-38bd00d87868",
  "date": "2025-02-15T16:00:00.000+01:00",
  "duration_seconds": 2922,
  "language": "eng",
  "tags": [
    "188",
    "2025",
    "hackerhotel2025",
    "Talks",
    "Leonardo Da Vinci",
    "hackerhotel2025-eng",
    "Day 2"
  ],
  "event_acronym": "hackerhotel2025",
  "source_schedule_url": "https://pretalx.hackerhotel.nl/2025/schedule/export/schedule.xml"
}