Chain of custody receipt

Source #12663

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 — Samsung Electronics (2009-03-02)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Samsung%20Electronics%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2009-03-02
EntitySamsung Electronics
Captured2026-04-23T06:38:12.062Z UTC
Hash computed at2026-04-23T06:38:12.062Z UTC
SHA-256ee09052fada30fe61ce889e1910889ade59c8fa4bdb202602c5d782f7fea33e0
Content length62,124 bytes
Content preview (first 800 chars) 
{"took":539,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":4533,"relation":"eq"},"max_score":18.584728,"hits":[{"_index":"edgar_file","_id":"0000893220-09-000448:w72965exv10w18.htm","_score":18.584728,"_source":{"ciks":["0001405495"],"period_ending":"2008-12-31","file_num":["001-33579"],"display_names":["InterDigital, Inc. (IDCC) (CIK 0001405495)"],"xsl":null,"sequence":2,"root_forms":["10-K"],"file_date":"2009-03-02","biz_states":["PA"],"sics":["6794"],"form":"10-K","adsh":"0000893220-09-000448","film_num":["09647854"],"biz_locations":["King of Prussia, PA"],"file_type":"EX-10.18","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/12663/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/12663/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/12663/receipt.json