Chain of custody receipt

Source #47783

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 — Stagwell (2023-05-10)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Stagwell%20Inc.%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2023-05-10
EntityStagwell Inc
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:14:36.745Z UTC
SHA-25690d4172031d6989516bc3dc71585a2a3b1e95fe241d29e9c57f7e77db9381f94
Content length673 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000876883",
    "0001512910"
  ],
  "period_ending": null,
  "file_num": [
    "005-53561"
  ],
  "display_names": [
    "Stagwell Inc  (STGW)  (CIK 0000876883)",
    "AlpInvest Partners B.V.  (CIK 0001512910)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13D"
  ],
  "file_date": "2023-05-10",
  "biz_states": [
    "NY",
    "P7"
  ],
  "sics": [
    "7311"
  ],
  "form": "SC 13D",
  "adsh": "0001193125-23-140847",
  "film_num": [
    "23907523"
  ],
  "biz_locations": [
    "New York, NY",
    "Amsterdam, P7"
  ],
  "file_type": "SC 13D",
  "file_description": "SC 13D",
  "inc_states": [
    "DE",
    "P7"
  ],
  "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/47783/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/47783/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/47783/receipt.json