{
  "story_id": "c7e4063df42088810b1682235e4892a2",
  "desk": "drm3",
  "revision": 1,
  "published_at": "2026-09-02T20:24:17.830Z",
  "content_hash": "76932fec636a13e0e8d956fe18825048f5d99e09be34e9e23e0ed76816a9c4e1",
  "hash_basis": "sha256 over `headline\\ndek\\nprose`, plus `\\n` + the canonical citations JSON when any source is placed, plus `\\n#blog` for blogs",
  "basis": {
    "headline": "SoftBank completes Japan's first stratospheric base station trials, targets 2027",
    "dek": "SoftBank Corp. completed Japan's first trials of a high-altitude communications base station from U.S. startup Sceye.",
    "prose": "SoftBank Corp. announced on 2026-09-03 that it completed the first successful trials in Japan of an airborne communications base station. [^1]\n\nSceye and SoftBank Corp. completed a demonstration of stratospheric connectivity in Japan. [^2]\n\nSoftBank Corp. targets commercialization of the stratospheric aerial base station for 2027. [^3]\n\nSoftBank's test used a High-Altitude Platform Station from U.S. aerospace startup Sceye to demonstrate communications capabilities. [^4]\n\nThe first mission of Sceye's Service Test Program traveled more than 15,000 km from New Mexico to Japan. [^5]\n\nThe flight backhauled data into SoftBank Corp.'s core network. [^6]\n\nThe successful demonstration advances the companies toward HAPS commercialization. [^7]\n\nThe aerial base station is balloon-like and designed to maintain communications during emergencies. [^8]",
    "cited": "[{\"statement\":\"SoftBank Corp. announced on 2026-09-03 that it completed the first successful trials in Japan of an airborne communications base station.\",\"source\":\"Nikkei Asia\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T20:24:17.830Z\",\"publisher_count\":1,\"sources\":[\"Nikkei Asia\"]},{\"statement\":\"Sceye and SoftBank Corp. completed a demonstration of stratospheric connectivity in Japan.\",\"source\":\"keysnews.com\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T00:00:00.000Z\",\"publisher_count\":1,\"sources\":[\"keysnews.com\"]},{\"statement\":\"SoftBank Corp. targets commercialization of the stratospheric aerial base station for 2027.\",\"source\":\"Nikkei Asia\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T20:24:17.830Z\",\"publisher_count\":1,\"sources\":[\"Nikkei Asia\"]},{\"statement\":\"SoftBank's test used a High-Altitude Platform Station from U.S. aerospace startup Sceye to demonstrate communications capabilities.\",\"source\":\"Nikkei Asia\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T20:24:17.830Z\",\"publisher_count\":1,\"sources\":[\"Nikkei Asia\"]},{\"statement\":\"The first mission of Sceye's Service Test Program traveled more than 15,000 km from New Mexico to Japan.\",\"source\":\"keysnews.com\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T00:00:00.000Z\",\"publisher_count\":1,\"sources\":[\"keysnews.com\"]},{\"statement\":\"The flight backhauled data into SoftBank Corp.'s core network.\",\"source\":\"keysnews.com\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T00:00:00.000Z\",\"publisher_count\":1,\"sources\":[\"keysnews.com\"]},{\"statement\":\"The successful demonstration advances the companies toward HAPS commercialization.\",\"source\":\"keysnews.com\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T00:00:00.000Z\",\"publisher_count\":1,\"sources\":[\"keysnews.com\"]},{\"statement\":\"The aerial base station is balloon-like and designed to maintain communications during emergencies.\",\"source\":\"Nikkei Asia\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-02T20:24:17.830Z\",\"publisher_count\":1,\"sources\":[\"Nikkei Asia\"]}]",
    "kind": "news"
  },
  "receipt_verify": "Ed25519 over the dot-joined string `slice_hash.cursor_from.cursor_to.view.view_version.row_count`; public_key and sig are base64url of the raw 32-byte key / 64-byte signature",
  "receipt": null,
  "receipt_note": "this revision predates receipt-keeping (before v0.37.0); the filed row lives in the record",
  "generation_chain": {
    "wire": {
      "stream": "fountain_news",
      "story_id": "bd19bbca7fb8a42d3bc4c84fc120b500",
      "thread_id": "9677a03da0ef4e679bfb3ebbbd0a8a8e",
      "thread_label": "Sceye",
      "novelty": "UPDATE",
      "content_hash": "8731e8f6b5c39a61578654a3e1d4ee6c012b83d4207d853e5a301b48e8fb1bee",
      "last_published_at": "2026-09-02T20:24:17.830Z",
      "read_receipt": {
        "slice_hash": "a106221b122790e8ab4ad2d02557183fa7ff81a4b6470977fe74fa508180d78f",
        "cursor_from": "eyJ0cyI6IjIwMjYtMDktMDJUMTk6NDU6MTcuMDAwMDAwWiIsImlkIjoiMjc4NjE2ZTUxYmJmNDhkYmNlNzZjNjhlYmMxM2E2NmUiLCJ2IjoiMSJ9",
        "cursor_to": "eyJ0cyI6IjIwMjYtMDktMDJUMjE6NDc6MjcuMDAwMDAwWiIsImlkIjoiNGRhNThiOWUxYTJhYWQ4NWRhYWNkODBjNDNiODMyYTIiLCJ2IjoiMSJ9",
        "view": "v_fountain_news",
        "view_version": "1",
        "row_count": 100,
        "window_days": 3,
        "bytes_scanned": 10113494,
        "credits": 8,
        "price_per_100_rows": 8,
        "sig": "YHm5rSEE7Q_BsZR9oyVH3H3xYG-nrTL5vwDhzsghFrBSHuFW0cEJ9OUmUp7jOI4zfwzRJ7DttIKpl8HysDgfAg",
        "public_key": "bMUigy8O0jOnBxQ4Sc-5lwhIZ8LQVAhxMbR7qESVuUE",
        "signer_path": "lakehouse/data-extract/v1",
        "alg": "Ed25519",
        "signed": true
      }
    },
    "written_at": "2026-09-03T00:46:12.991Z"
  },
  "cited_facts": [
    {
      "statement": "SoftBank Corp. announced on 2026-09-03 that it completed the first successful trials in Japan of an airborne communications base station.",
      "source": "Nikkei Asia",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T20:24:17.830Z",
      "publisher_count": 1,
      "sources": [
        "Nikkei Asia"
      ]
    },
    {
      "statement": "Sceye and SoftBank Corp. completed a demonstration of stratospheric connectivity in Japan.",
      "source": "keysnews.com",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T00:00:00.000Z",
      "publisher_count": 1,
      "sources": [
        "keysnews.com"
      ]
    },
    {
      "statement": "SoftBank Corp. targets commercialization of the stratospheric aerial base station for 2027.",
      "source": "Nikkei Asia",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T20:24:17.830Z",
      "publisher_count": 1,
      "sources": [
        "Nikkei Asia"
      ]
    },
    {
      "statement": "SoftBank's test used a High-Altitude Platform Station from U.S. aerospace startup Sceye to demonstrate communications capabilities.",
      "source": "Nikkei Asia",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T20:24:17.830Z",
      "publisher_count": 1,
      "sources": [
        "Nikkei Asia"
      ]
    },
    {
      "statement": "The first mission of Sceye's Service Test Program traveled more than 15,000 km from New Mexico to Japan.",
      "source": "keysnews.com",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T00:00:00.000Z",
      "publisher_count": 1,
      "sources": [
        "keysnews.com"
      ]
    },
    {
      "statement": "The flight backhauled data into SoftBank Corp.'s core network.",
      "source": "keysnews.com",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T00:00:00.000Z",
      "publisher_count": 1,
      "sources": [
        "keysnews.com"
      ]
    },
    {
      "statement": "The successful demonstration advances the companies toward HAPS commercialization.",
      "source": "keysnews.com",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T00:00:00.000Z",
      "publisher_count": 1,
      "sources": [
        "keysnews.com"
      ]
    },
    {
      "statement": "The aerial base station is balloon-like and designed to maintain communications during emergencies.",
      "source": "Nikkei Asia",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-02T20:24:17.830Z",
      "publisher_count": 1,
      "sources": [
        "Nikkei Asia"
      ]
    }
  ],
  "note": "A signature proves who filed this and that it has not changed since. It never makes a claim true."
}