Chain of custody receipt

Source #44263

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 — Leading the Future (2025-02-20)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Leading%20the%20Future%20(LTF)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2025-02-20
EntityLeading the Future (LTF)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:05:26.323Z UTC
SHA-256a7e9eaf70865215e1682ee8f397b10872db1e11ba2bf5caee1f28a8aaf35031d
Content length583 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001005757"
  ],
  "period_ending": "2024-12-31",
  "file_num": [
    "000-27512"
  ],
  "display_names": [
    "CSG SYSTEMS INTERNATIONAL INC  (CSGS)  (CIK 0001005757)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2025-02-20",
  "biz_states": [
    "CO"
  ],
  "sics": [
    "7374"
  ],
  "form": "10-K",
  "adsh": "0000950170-25-023962",
  "film_num": [
    "25644571"
  ],
  "biz_locations": [
    "Englewood, CO"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "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/44263/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/44263/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/44263/receipt.json