Chain of custody receipt

Source #5257

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 — Cyber Unit (2018-09-14)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Cyber%20Unit%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2018-09-14
EntityCyber Unit
Captured2026-04-12T17:39:30.956Z UTC
Hash computed at2026-04-12T17:39:30.956Z UTC
SHA-256c3ab24dda7c45f03dd1152c36f5e473117d0698b0c9a25a2161635c5ee146f31
Content length10,686 bytes
Content preview (first 800 chars) 
{"took":1640,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":16,"relation":"eq"},"max_score":6.6649227,"hits":[{"_index":"edgar_file","_id":"0001272550-15-000022:rtnb033115_10q.htm","_score":6.6649227,"_source":{"ciks":["0001272550"],"period_ending":"2015-03-31","file_num":["000-50502"],"display_names":["root9B Technologies Inc. (CIK 0001272550)"],"xsl":null,"sequence":1,"root_forms":["10-Q"],"file_date":"2015-05-15","biz_states":["NC"],"sics":["8742"],"form":"10-Q","adsh":"0001272550-15-000022","film_num":["15865471"],"biz_locations":["Charlotte…

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/5257/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5257/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5257/receipt.json