Chain of custody receipt

Source #8731

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 — Investigative Data Warehouse (IDW) (2011-03-11)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Investigative%20Data%20Warehouse%20(IDW)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2011-03-11
EntityInvestigative Data Warehouse (IDW)
Captured2026-04-13T19:28:01.025Z UTC
Hash computed at2026-04-13T19:28:01.025Z UTC
SHA-256fdf85956b49bd931470182944ce8b1e0041c9e27366aa5b931c4b189f25e33f9
Content length1,760 bytes
Content preview (first 800 chars)
{"took":1010,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":1,"relation":"eq"},"max_score":4.970661,"hits":[{"_index":"edgar_file","_id":"0000950123-11-024795:c13964e10vk.htm","_score":4.970661,"_source":{"ciks":["0001471038"],"period_ending":"2010-12-31","file_num":["001-34551"],"display_names":["GLOBAL DEFENSE TECHNOLOGY & SYSTEMS, INC. (CIK 0001471038)"],"xsl":null,"sequence":1,"root_forms":["10-K"],"file_date":"2011-03-11","biz_states":["VA"],"sics":["8711"],"form":"10-K","adsh":"0000950123-11-024795","film_num":["11682714"],"biz_locations":["Mclean, VA"],"file_type":"10-K","file_description":"FORM…

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/8731/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/8731/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/8731/receipt.json