Chain of custody receipt

Source #13540

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 — John Joyce (2011-07-07)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22John%20Joyce%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2011-07-07
EntityJohn Joyce
Captured2026-04-23T07:13:47.408Z UTC
Hash computed at2026-04-23T07:13:47.408Z UTC
SHA-2560e6bec31fd547e027a4a39b9cf0762671905d10df608fece7a1b07b18b9dca8f
Content length25,484 bytes
Content preview (first 800 chars) 
{"took":401,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":43,"relation":"eq"},"max_score":13.452009,"hits":[{"_index":"edgar_file","_id":"0001116502-09-000371:ambient32.htm","_score":13.452009,"_source":{"ciks":["0001047919"],"period_ending":"2008-12-31","file_num":["000-23723"],"display_names":["AMBIENT CORP /NY (CIK 0001047919)"],"xsl":null,"sequence":7,"root_forms":["10-K"],"file_date":"2009-03-11","biz_states":["NY"],"sics":["4813"],"form":"10-K","adsh":"0001116502-09-000371","film_num":["09673337"],"biz_locations":["New York…

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/13540/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/13540/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/13540/receipt.json