Chain of custody receipt

Source #4277

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 — Shyam Sankar (2021-05-17)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Shyam%20Sankar%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2021-05-17
EntityShyam Sankar
Captured2026-04-12T01:50:42.935Z UTC
Hash computed at2026-04-12T01:50:42.935Z UTC
SHA-256af0ac6f4fd5e64561756d02bf94e27fb87f2818d24bc0158ed79473254c97dc8
Content length40,038 bytes
Content preview (first 800 chars)
{"took":639,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":65,"relation":"eq"},"max_score":35.823235,"hits":[{"_index":"edgar_file","_id":"0001209191-21-033342:doc4.xml","_score":35.823235,"_source":{"ciks":["0001824159","0001321655"],"period_ending":"2021-05-13","file_num":["001-39540"],"display_names":["Sankar Shyam (CIK 0001824159)","Palantir Technologies Inc. (PLTR) (CIK 0001321655)"],"xsl":"xslF345X03","schema_version":"X0306","sequence":1,"root_forms":["4"],"file_date":"2021-05-17","biz_states":["CO"],"sics":["7372"],"form":"4","adsh":"0001209191-21-033342","film_num":["21933392"],"biz_locations":["","Denver, CO"],"file_type":"4","file_description":"FORM 4…

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/4277/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4277/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4277/receipt.json