Chain of custody receipt

Source #66702

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: SC 13G/A — TCW GROUP INC (2021-02-08)
Original URLhttps://www.sec.gov/Archives/edgar/data/1670349/000110465921013487/0001104659-21-013487-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2021-02-08
EntityThe TCW Group Inc
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T01:30:47.975Z UTC
SHA-2562cd57fd049400d3502fd677f7b8e235959b90f1be3a4dd709acc4a98b8d07e3e
Content length686 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001670349",
    "0000850401"
  ],
  "period_ending": null,
  "file_num": [
    "005-89907"
  ],
  "display_names": [
    "U.S. WELL SERVICES, INC.  (CIK 0001670349)",
    "TCW GROUP INC  (CIK 0000850401)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2021-02-08",
  "biz_states": [
    "TX",
    "CA"
  ],
  "sics": [
    "1389",
    "6798"
  ],
  "form": "SC 13G/A",
  "adsh": "0001104659-21-013487",
  "film_num": [
    "21600209"
  ],
  "biz_locations": [
    "Houston, TX",
    "Los Angeles, CA"
  ],
  "file_type": "SC 13G/A",
  "file_description": "SC 13G/A",
  "inc_states": [
    "DE",
    "NV"
  ],
  "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/66702/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/66702/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/66702/receipt.json