Chain of custody receipt

Source #44821

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 — Build American AI (2026-04-20)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Build%20American%20AI%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2026-04-20
EntityBuild American AI
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:01:59.649Z UTC
SHA-2566fe736fb399585ba80e7bd7abcdd84911faf2313b6f33a0377c7522ef8b12ef5
Content length574 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0002026053"
  ],
  "period_ending": null,
  "file_num": [
    "333-294165"
  ],
  "display_names": [
    "PERSHING SQUARE HOLDCO, L.P.  (PS)  (CIK 0002026053)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2026-04-20",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "6282"
  ],
  "form": "S-1/A",
  "adsh": "0001140361-26-015515",
  "film_num": [
    "26873776"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "S-1/A",
  "file_description": "S-1/A",
  "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/44821/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/44821/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/44821/receipt.json