Chain of custody receipt

Source #5091

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 — Paul Graham (2014-03-27)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Paul%20Graham%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2014-03-27
EntityPaul Graham
Captured2026-04-12T17:38:49.796Z UTC
Hash computed at2026-04-12T17:38:49.796Z UTC
SHA-2563a56ba51fc1ad64bef6cf3cd217f7f62a089d8054c7fecd37b924909ebd79ba2
Content length17,142 bytes
Content preview (first 800 chars) 
{"took":366,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":27,"relation":"eq"},"max_score":15.050545,"hits":[{"_index":"edgar_file","_id":"0001181431-08-034381:rrd208149.xml","_score":15.050545,"_source":{"ciks":["0001056794","0001418509"],"period_ending":"2008-05-21","file_num":["000-29175"],"display_names":["AVANEX CORP (CIK 0001056794)","SMITH PAUL GRAHAM (CIK 0001418509)"],"xsl":"xslF345X02","schema_version":"X0202","sequence":1,"root_forms":["4"],"file_date":"2008-05-23","biz_states":["CA"],"sics":["3674"],"form":"4","adsh":"0001181431-08-034381","film_num":["08859175"],"biz_locations":["Fremont, CA"],"file_type":"4","file_description":"STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP ON FORM…

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/5091/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5091/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5091/receipt.json