Chain of custody receipt

Source #7

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.

TitleResearch: Matt Danzeisen - SEC filing
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Matt%20Danzeisen%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationPublic Record Research
Source typeweb_search
Date2024
EntityMatt Danzeisen
Captured2026-04-05T07:28:59.650Z UTC
Hash computed at2026-04-05T07:28:59.650Z UTC
SHA-256789374e9bacdc76708aab40c92066d0cc899d85cbc4dcbb4f800551b3fbddd69
Content length5,806 bytes
Content preview (first 800 chars) 
{"took":379,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":8,"relation":"eq"},"max_score":28.526474,"hits":[{"_index":"edgar_file","_id":"0001213900-20-034378:ownership.xml","_score":28.526474,"_source":{"ciks":["0001826815","0001815086"],"period_ending":"2020-10-29","file_num":["001-39623"],"display_names":["Danzeisen Matthew (CIK 0001826815)","Bridgetown Holdings Ltd (CIK 0001815086)"],"xsl":"xslF345X03","schema_version":"X0306","sequence":1,"root_forms":["4"],"file_date":"2020-11-02","biz_states":["F4"],"sics":["6770"],"form":"4","adsh":"0001213900-20-034378","film_num":["201278908"],"biz_locations":["","Hong Kong…

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/7/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/7/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/7/receipt.json