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-bf9bc7a6-cf18-506e-b5d3-bcda9521866d",
  "title": "Communication without Borders: Cross-Platform VoIP",
  "presenters": [
    "Leon Knorr",
    "Johannes Quast",
    "Jan Leber"
  ],
  "event": "Gulaschprogrammiernacht 24",
  "year": "2026",
  "source_url": "https://media.ccc.de/v/gpn24-526-communication-without-borders-cross-platform-voip",
  "source_kind": "CCC recording catalog",
  "source_file": "ccc-gpn24.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/gpn24-526-communication-without-borders-cross-platform-voip"
    }
  ],
  "provenance": [
    {
      "event": "gpn24",
      "title": "Gulaschprogrammiernacht 24",
      "source": "https://api.media.ccc.de/public/conferences/gpn24",
      "file": "ccc-gpn24.json",
      "sha256": "4d4594bb95646e202d88542b85d0baf6de2bb7dd95fe95454d3d092baa1e49a3",
      "checked": "2026-10-16T03:46:45Z",
      "source_records": 76
    }
  ],
  "source_guid": "bf9bc7a6-cf18-506e-b5d3-bcda9521866d",
  "source_event_api": "https://api.media.ccc.de/public/events/bf9bc7a6-cf18-506e-b5d3-bcda9521866d",
  "date": "2026-06-05T10:00:00.000+02:00",
  "duration_seconds": 2720,
  "language": "deu",
  "tags": [
    "MLPPNQ",
    "2026",
    "gpn24",
    "Software and Infrastructure",
    "ZKM Kubus",
    "gpn24-deu",
    "Day 2"
  ],
  "event_acronym": "gpn24",
  "source_schedule_url": "https://cfp.gulas.ch/gpn24/schedule/"
}