Chain of custody receipt

Source #74891

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: S-1 — Transportation Systems Holdings Inc. (2019-01-25)
Original URLhttps://www.sec.gov/Archives/edgar/data/1754668/000114036119001549/0001140361-19-001549-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2019-01-25
EntityTransport Workers Union P. A. C.
Captured2026-09-28T13:44:19.387Z UTC
Hash computed at2026-09-28T13:44:19.387Z UTC
SHA-256a167955ba6187824d5dc62ac84a4d8c402a412db13eb2a002d4bda112c968527
Content length574 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001754668"
  ],
  "period_ending": null,
  "file_num": [
    "333-229353"
  ],
  "display_names": [
    "Transportation Systems Holdings Inc.  (CIK 0001754668)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2019-01-25",
  "biz_states": [
    "CT"
  ],
  "sics": [
    "3743"
  ],
  "form": "S-1",
  "adsh": "0001140361-19-001549",
  "film_num": [
    "19541296"
  ],
  "biz_locations": [
    "Norwalk, CT"
  ],
  "file_type": "S-1",
  "file_description": "FORM S-1",
  "inc_states": [
    "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/74891/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/74891/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/74891/receipt.json