Chain of custody receipt

Source #43742

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 — Larry Summers (2021-12-30)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Larry%20Summers%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-12-30
EntityLarry Summers
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:05:26.323Z UTC
SHA-2562f5ba34a59426eec7f58c7e6206e365b6b6431caad1494324698765620ceb672
Content length659 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001626636",
    "0001774675"
  ],
  "period_ending": "2021-12-28",
  "file_num": [
    "001-38960"
  ],
  "display_names": [
    "Summers Lawrence Henry  (CIK 0001626636)",
    "Skillsoft Corp.  (SKIL, SKILW)  (CIK 0001774675)"
  ],
  "xsl": null,
  "sequence": 2,
  "root_forms": [
    "4"
  ],
  "file_date": "2021-12-30",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "7372"
  ],
  "form": "4",
  "adsh": "0001104659-21-154851",
  "film_num": [
    "211534278"
  ],
  "biz_locations": [
    "",
    "New York, NY"
  ],
  "file_type": "EX-24",
  "file_description": "EXHIBIT 24",
  "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/43742/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/43742/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/43742/receipt.json