Chain of custody receipt

Source #9255

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 — Michael Thomas (2022-05-02)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Michael%20Thomas%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2022-05-02
EntityMichael Thomas
Captured2026-04-13T20:30:20.400Z UTC
Hash computed at2026-04-13T20:30:20.400Z UTC
SHA-2563c38760ee2697e0f74e797d3e993fc1fcc8227d73abff9d870a92006fa7e762c
Content length65,354 bytes
Content preview (first 800 chars)
{"took":3205,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":719,"relation":"eq"},"max_score":11.645967,"hits":[{"_index":"edgar_file","_id":"0000925328-02-000019:ex416.txt","_score":11.645967,"_source":{"ciks":["0001072765"],"period_ending":"2001-12-31","file_num":["000-25549"],"display_names":["INTERDENT INC (CIK 0001072765)"],"xsl":null,"sequence":2,"root_forms":["10-K"],"file_date":"2002-04-16","biz_states":["CA"],"sics":["8090"],"form":"10-K","adsh":"0000925328-02-000019","film_num":["02612451"],"biz_locations":["El Segundo, CA"],"file_type":"EX-4.1.6","file_description":"AMENDMENT NO. 4 TO CREDIT…

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/9255/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/9255/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/9255/receipt.json