Chain of custody receipt

Source #12503

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 — Covington and Burling (2004-03-30)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Covington%20and%20Burling%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2004-03-30
EntityCovington and Burling
Captured2026-04-23T06:35:53.175Z UTC
Hash computed at2026-04-23T06:35:53.175Z UTC
SHA-2569786be0518fd3b2cb279fe776a85ee7dff97b8c8a61c94a802d228273887b7ff
Content length23,930 bytes
Content preview (first 800 chars)
{"took":1265,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":31,"relation":"eq"},"max_score":26.85759,"hits":[{"_index":"edgar_file","_id":"0001193125-04-090024:d10q.htm","_score":26.85759,"_source":{"ciks":["0000352747"],"period_ending":"2004-03-31","file_num":["000-16005"],"display_names":["UNIGENE LABORATORIES INC (CIK 0000352747)"],"xsl":null,"sequence":1,"root_forms":["10-Q"],"file_date":"2004-05-17","biz_states":["NJ"],"sics":["2833"],"form":"10-Q","adsh":"0001193125-04-090024","film_num":["04812551"],"biz_locations":["Fairfield, NJ"],"file_type":"10-Q","file_description":"UNIGENE LABORATORIES…

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/12503/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/12503/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/12503/receipt.json