Chain of custody receipt

Source #60074

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 — Andreessen Horowitz (a16z) (2026-05-22)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Andreessen%20Horowitz%20(a16z)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2026-05-22
EntityAndreessen Horowitz (a16z)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-22T23:37:28.565Z UTC
SHA-256f1e717c775b20e97606a75f8db34830c4c1f30d5560aa5253bcc4da01d5dfc13
Content length583 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001443646"
  ],
  "period_ending": "2026-03-31",
  "file_num": [
    "001-34972"
  ],
  "display_names": [
    "Booz Allen Hamilton Holding Corp  (BAH)  (CIK 0001443646)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2026-05-22",
  "biz_states": [
    "VA"
  ],
  "sics": [
    "8742"
  ],
  "form": "10-K",
  "adsh": "0001628280-26-037521",
  "film_num": [
    "261010697"
  ],
  "biz_locations": [
    "Mclean, VA"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "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/60074/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/60074/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/60074/receipt.json