Chain of custody receipt

Source #5925

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 — ForwardPMX (2023-03-06)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22ForwardPMX%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2023-03-06
EntityForwardPMX
Captured2026-04-12T23:13:07.664Z UTC
Hash computed at2026-04-12T23:13:07.664Z UTC
SHA-256e165b3823210b9c479e1ec95cad72c2b0ff020e22ddc2b7af0bea8117d4b0964
Content length8,597 bytes
Content preview (first 800 chars) 
{"took":1089,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":14,"relation":"eq"},"max_score":20.739717,"hits":[{"_index":"edgar_file","_id":"0000876883-23-000010:exhibit21-subsidiariesofth.htm","_score":20.739717,"_source":{"ciks":["0000876883"],"period_ending":"2022-12-31","file_num":["001-13718"],"display_names":["Stagwell Inc (STGW) (CIK 0000876883)"],"xsl":null,"sequence":4,"root_forms":["10-K"],"file_date":"2023-03-06","biz_states":["NY"],"sics":["7311"],"form":"10-K","adsh":"0000876883-23-000010","film_num":["23709649"],"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/5925/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5925/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5925/receipt.json