Chain of custody receipt

Source #4030

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 — Société Générale (2013-12-02)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Soci%C3%A9t%C3%A9%20G%C3%A9n%C3%A9rale%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2013-12-02
EntitySociété Générale
Captured2026-04-12T01:49:19.972Z UTC
Hash computed at2026-04-12T01:49:19.972Z UTC
SHA-2569545076d4468a5294f82c75fb7c9c617e0c7ada56642aebc63b9079381b29290
Content length55,029 bytes
Content preview (first 800 chars) 
{"took":945,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":91,"relation":"eq"},"max_score":41.649094,"hits":[{"_index":"edgar_file","_id":"0000950135-01-502811:b40490bce10-q_pdf.pdf","_score":41.649094,"_source":{"ciks":["0000815508"],"period_ending":"2001-07-31","file_num":["001-15167"],"display_names":["BIOPURE CORP (CIK 0000815508)"],"xsl":null,"sequence":8,"root_forms":["10-Q"],"file_date":"2001-09-14","biz_states":["MA"],"sics":["2836"],"form":"10-Q","adsh":"0000950135-01-502811","film_num":["1737461"],"biz_locations":["Cambridge, MA"],"file_type":"10-Q","file_description":"COURTESY…

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/4030/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4030/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4030/receipt.json