Chain of custody receipt

Source #62831

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 — Sheet Metal, Air, Rail & Transportation Union (2015-03-30)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Sheet%20Metal%2C%20Air%2C%20Rail%20%26%20Transportation%20Union%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2015-03-30
EntitySheet Metal, Air, Rail & Transportation Union
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T07:24:40.420Z UTC
SHA-25658d86ba611fe77f2e494d92279a12462d96f3b13201c4d2c8ec836457e6763e9
Content length574 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000914397"
  ],
  "period_ending": "2014-12-31",
  "file_num": [
    "000-23224"
  ],
  "display_names": [
    "GREAT LAKES AVIATION LTD  (CIK 0000914397)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2015-03-30",
  "biz_states": [
    "WY"
  ],
  "sics": [
    "4512"
  ],
  "form": "10-K",
  "adsh": "0001193125-15-111549",
  "film_num": [
    "15734221"
  ],
  "biz_locations": [
    "Cheyenne, WY"
  ],
  "file_type": "10-K",
  "file_description": "FORM 10-K",
  "inc_states": [
    "IA"
  ],
  "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/62831/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62831/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62831/receipt.json