Chain of custody receipt

Source #4877

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 — Castelion (2025-08-18)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Castelion%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2025-08-18
EntityCastelion
Captured2026-04-12T17:33:49.612Z UTC
Hash computed at2026-04-12T17:33:49.612Z UTC
SHA-25696c52425fff92d7c3b6d790e29ccd47c1c6c81fb76380dfb6bd317c50e7a07f3
Content length1,749 bytes
Content preview (first 800 chars) 
{"took":2306,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":1,"relation":"eq"},"max_score":2.495226,"hits":[{"_index":"edgar_file","_id":"0001069258-26-000013:ktos-20251228.htm","_score":2.495226,"_source":{"ciks":["0001069258"],"period_ending":"2025-12-28","file_num":["001-34460"],"display_names":["KRATOS DEFENSE & SECURITY SOLUTIONS, INC. (KTOS) (CIK 0001069258)"],"xsl":null,"sequence":1,"root_forms":["10-K"],"file_date":"2026-02-23","biz_states":["CA"],"sics":["3760"],"form":"10-K","adsh":"0001069258-26-000013","film_num":["26666003"],"biz_locations":["San Diego…

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/4877/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4877/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4877/receipt.json