Chain of custody receipt

Source #41225

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 — PDFTron Systems (2024-03-07)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22PDFTron%20Systems%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2024-03-07
EntityPDFTron Systems
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:13:47.632Z UTC
SHA-256e98740c4eb234bd060dff85d595a1458657308c05ba1c1837869f344f92071a0
Content length550 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001825590"
  ],
  "period_ending": "2023-12-31",
  "file_num": [
    "814-01366"
  ],
  "display_names": [
    "SL Investment Corp.  (CIK 0001825590)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2024-03-07",
  "biz_states": [
    "NY"
  ],
  "sics": [],
  "form": "10-K",
  "adsh": "0001825590-24-000011",
  "film_num": [
    "24730870"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "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/41225/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/41225/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/41225/receipt.json