Chain of custody receipt

Source #60835

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 — American Maritime Officers (2013-02-26)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22American%20Maritime%20Officers%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2013-02-26
EntityAmerican Maritime Officers
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-24T23:55:30.502Z UTC
SHA-25651a3dc45999c861cb2f9df6cc20d228624b26a0628bcd8098793da7045f1f56f
Content length561 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000040211"
  ],
  "period_ending": "2012-12-31",
  "file_num": [
    "001-02328"
  ],
  "display_names": [
    "GATX CORP  (GATX)  (CIK 0000040211)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2013-02-26",
  "biz_states": [
    "X1"
  ],
  "sics": [
    "4700"
  ],
  "form": "10-K",
  "adsh": "0001445305-13-000340",
  "film_num": [
    "13642873"
  ],
  "biz_locations": [
    "Chicago, X1"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "inc_states": [
    "NY"
  ],
  "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/60835/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/60835/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/60835/receipt.json