Chain of custody receipt

Source #13860

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 — Rick Larsen (2009-05-20)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Rick%20Larsen%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2009-05-20
EntityRick Larsen
Captured2026-04-23T07:33:50.330Z UTC
Hash computed at2026-04-23T07:33:50.330Z UTC
SHA-25605025557e4219fd149539e3fdd0ff144dfee9505e97b62471e6a13dfbe1e9020
Content length4,148 bytes
Content preview (first 800 chars) 
{"took":1470,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":5,"relation":"eq"},"max_score":18.925957,"hits":[{"_index":"edgar_file","_id":"0000950123-11-017139:c11288exv10w11.htm","_score":18.925957,"_source":{"ciks":["0000039899"],"period_ending":"2010-12-26","file_num":["001-06961"],"display_names":["GANNETT CO INC /DE/ (TGNA) (CIK 0000039899)"],"xsl":null,"sequence":10,"root_forms":["10-K"],"file_date":"2011-02-23","biz_states":["VA"],"sics":["2711"],"form":"10-K","adsh":"0000950123-11-017139","film_num":["11632446"],"biz_locations":["Mclean, VA"],"file_type":"EX-10.11","file_description":"EXHIBIT…

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/13860/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/13860/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/13860/receipt.json