Chain of custody receipt

Source #60283

Cryptographic attestation that the document below was captured in Goblin House's archive at the timestamp shown, with the hash listed. If the original URL goes dark or its content changes, this receipt remains as evidence of what the public record looked like at capture time.

TitleSEC EDGAR: filing — Northrop Grumman (2020-01-30)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Northrop%20Grumman%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2020-01-30
EntityNorthrop Grumman
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-24T02:26:42.145Z UTC
SHA-256803276d32d1991bc4beb5f64b4c5aa1323019cdc06c9e4068a52f17da15924fc
Content length644 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001133421"
  ],
  "period_ending": "2019-12-31",
  "file_num": [
    "001-16411"
  ],
  "display_names": [
    "NORTHROP GRUMMAN CORP /DE/  (NOC)  (CIK 0001133421)"
  ],
  "xsl": null,
  "sequence": 6,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2020-01-30",
  "biz_states": [
    "VA"
  ],
  "sics": [
    "3812"
  ],
  "form": "10-K",
  "adsh": "0001133421-20-000006",
  "film_num": [
    "20559725"
  ],
  "biz_locations": [
    "Falls Church, VA"
  ],
  "file_type": "EX-10.(V)(I)",
  "file_description": "FIRST AMENDMENT TO NORTHROP GRUMMAN INNOVATION SYSTEMS DEFINED BENEFIT",
  "inc_states": [],
  "items": []
}

Verifying this receipt

The hash above was computed as:

sha256( coalesce(url, '<no-url>') || '\n' || raw_content )

Anyone with a copy of the original document can verify the match:

  1. Take the URL field and the original document content.
  2. Concatenate url + '\n' + content and SHA-256 it.
  3. Compare to the SHA-256 row above.

Or POST the candidate content to /source/60283/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/60283/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/60283/receipt.json