Chain of custody receipt

Source #4897

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 — Commercial Satellite Communications Office (CSCO) (2025-11-10)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Commercial%20Satellite%20Communications%20Office%20(CSCO)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2025-11-10
EntityCommercial Satellite Communications Office (CSCO)
Captured2026-04-12T17:33:59.071Z UTC
Hash computed at2026-04-12T17:33:59.071Z UTC
SHA-256ad00356531791c910863683c61475bd12cb0455b2e5b82a18a22a2b64ccd04e3
Content length1,780 bytes
Content preview (first 800 chars)
{"took":438,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":1,"relation":"eq"},"max_score":2.7859955,"hits":[{"_index":"edgar_file","_id":"0000023197-25-000080:cmtl-20250731.htm","_score":2.7859955,"_source":{"ciks":["0000023197"],"period_ending":"2025-07-31","file_num":["000-07928"],"display_names":["COMTECH TELECOMMUNICATIONS CORP /DE/ (CMTL) (CIK 0000023197)"],"xsl":null,"sequence":1,"root_forms":["10-K"],"file_date":"2025-11-10","biz_states":["AZ"],"sics":["3663"],"form":"10-K","adsh":"0000023197-25-000080","film_num":["251466650"],"biz_locations":["Chandler…

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/4897/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4897/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4897/receipt.json