Chain of custody receipt

Source #4406

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 typeweb_search
Date2024-03-07
EntityPDFTron Systems
Captured2026-04-12T01:52:59.711Z UTC
Hash computed at2026-04-12T01:52:59.711Z UTC
SHA-2568241005ab6be10b3e0223cc755995a3ef1fb4e5b7fe9e8d9dade79cf091b54f6
Content length28,306 bytes
Content preview (first 800 chars) 
{"took":172,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":50,"relation":"eq"},"max_score":23.08073,"hits":[{"_index":"edgar_file","_id":"0001825590-23-000032:slic-20230930.htm","_score":23.08073,"_source":{"ciks":["0001825590"],"period_ending":"2023-09-30","file_num":["814-01366"],"display_names":["SL Investment Corp. (CIK 0001825590)"],"xsl":null,"sequence":1,"root_forms":["10-Q"],"file_date":"2023-11-06","biz_states":["NY"],"sics":[],"form":"10-Q","adsh":"0001825590-23-000032","film_num":["231380048"],"biz_locations":["New York…

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/4406/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4406/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4406/receipt.json