Chain of custody receipt

Source #17892

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 — Jonathan Blum (2013-03-26)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Jonathan%20Blum%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2013-03-26
EntityJonathan Blum
Captured2026-04-23T13:57:39.312Z UTC
Hash computed at2026-04-23T13:57:39.312Z UTC
SHA-2569396871f4db0f7aca91e3c240c30a89eb4b160e36255f4b58c28e4660215a1a2
Content length12,219 bytes
Content preview (first 800 chars) 
{"took":761,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":18,"relation":"eq"},"max_score":20.880367,"hits":[{"_index":"edgar_file","_id":"0001181431-13-018736:rrd336883_380889.htm","_score":20.880367,"_source":{"ciks":["0001238486","0001060009"],"period_ending":"2013-03-25","file_num":["001-14057"],"display_names":["BLUM JONATHAN DAVID (CIK 0001238486)","KINDRED HEALTHCARE, INC (CIK 0001060009)"],"xsl":null,"sequence":2,"root_forms":["4"],"file_date":"2013-03-26","biz_states":["KY"],"sics":["8050"],"form":"4","adsh":"0001181431-13-018736","film_num":["13716006"],"biz_locations":["","Louisville, KY"],"file_type":"EX-24.","file_description":"POWER OF…

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/17892/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/17892/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/17892/receipt.json