Chain of custody receipt

Source #45166

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 — Cybersecurity and Infrastructure Security Agency (CISA) (2021-04-23)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Cybersecurity%20and%20Infrastructure%20Security%20Agency%20(CISA)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-04-23
EntityCybersecurity and Infrastructure Security Agency (CISA)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:01:59.649Z UTC
SHA-256d938a78c326a2b1700897a634532a145c599918464ec3059963bf4d44727f74e
Content length561 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000008947"
  ],
  "period_ending": "2021-02-28",
  "file_num": [
    "001-12777"
  ],
  "display_names": [
    "AZZ INC  (AZZ)  (CIK 0000008947)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2021-04-23",
  "biz_states": [
    "TX"
  ],
  "sics": [
    "3640"
  ],
  "form": "10-K",
  "adsh": "0000008947-21-000052",
  "film_num": [
    "21846635"
  ],
  "biz_locations": [
    "Fort Worth, TX"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "inc_states": [
    "TX"
  ],
  "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/45166/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/45166/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/45166/receipt.json