Chain of custody receipt

Source #73535

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: SC 13G/A — NORFOLK SOUTHERN CORP (2017-01-25)
Original URLhttps://www.sec.gov/Archives/edgar/data/702165/000035348017001503/0000353480-17-001503-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2017-01-25
EntityNorfolk Southern Corp.
Captured2026-09-28T13:04:50.803Z UTC
Hash computed at2026-09-28T13:04:50.803Z UTC
SHA-256c8ce75d3a9d3985beb32c7aa4798831b81867de35a049a8fa57d4e8a5a4ab1c1
Content length689 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000702165",
    "0001364742"
  ],
  "period_ending": null,
  "file_num": [
    "005-52833"
  ],
  "display_names": [
    "NORFOLK SOUTHERN CORP  (NSC)  (CIK 0000702165)",
    "BlackRock Inc.  (BLK)  (CIK 0001364742)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2017-01-25",
  "biz_states": [
    "VA",
    "NY"
  ],
  "sics": [
    "4011",
    "6211"
  ],
  "form": "SC 13G/A",
  "adsh": "0000353480-17-001503",
  "film_num": [
    "17547116"
  ],
  "biz_locations": [
    "Norfolk, VA",
    "New York, NY"
  ],
  "file_type": "SC 13G/A",
  "file_description": null,
  "inc_states": [
    "VA",
    "DE"
  ],
  "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/73535/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/73535/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/73535/receipt.json