Chain of custody receipt

Source #12000

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 — X Corp (2004-02-17)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22X%20Corp%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2004-02-17
EntityX Corp
Captured2026-04-23T06:26:51.727Z UTC
Hash computed at2026-04-23T06:26:51.727Z UTC
SHA-256ff7bcebcf185ea38f299cf5a65d398011eb6364813b0068ee6e6b891c75d6659
Content length58,306 bytes
Content preview (first 800 chars)
{"took":3067,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":308,"relation":"eq"},"max_score":6.9465084,"hits":[{"_index":"edgar_file","_id":"0001477932-23-007813:karx_10q.htm","_score":6.9465084,"_source":{"ciks":["0001729637"],"period_ending":"2023-08-31","file_num":["000-56288"],"display_names":["Karbon-X Corp. (KARX) (CIK 0001729637)"],"xsl":null,"sequence":1,"root_forms":["10-Q"],"file_date":"2023-10-23","biz_states":["A0"],"sics":["2844"],"form":"10-Q","adsh":"0001477932-23-007813","film_num":["231340450"],"biz_locations":["Calgary, A0"],"file_type":"10-Q","file_description":"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/12000/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/12000/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/12000/receipt.json