Chain of custody receipt

Source #60320

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 — Service Employees International Union (2021-08-23)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Service%20Employees%20International%20Union%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-08-23
EntityService Employees International Union
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-24T02:37:45.625Z UTC
SHA-256def239e033a6ff1f5961c7fcada74ff59063663b01703627b996193cb4c8e66c
Content length601 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001795250"
  ],
  "period_ending": "2021-06-30",
  "file_num": [
    "001-39245"
  ],
  "display_names": [
    "Madison Square Garden Entertainment Corp.  (SPHR)  (CIK 0001795250)"
  ],
  "xsl": null,
  "sequence": 7,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2021-08-23",
  "biz_states": [
    "NY"
  ],
  "sics": [
    "7900"
  ],
  "form": "10-K",
  "adsh": "0001795250-21-000015",
  "film_num": [
    "211197449"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "EX-10.6",
  "file_description": "EX-10.6",
  "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/60320/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/60320/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/60320/receipt.json