Chain of custody receipt

Source #4233

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 — Grant Verstandig (2023-10-18)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Grant%20Verstandig%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2023-10-18
EntityGrant Verstandig
Captured2026-04-12T01:50:36.816Z UTC
Hash computed at2026-04-12T01:50:36.816Z UTC
SHA-2562bb6fffaf3f5642ee1d5b1b2b7ec6309449d288fd09fdab60dd046d55b29fe6a
Content length6,030 bytes
Content preview (first 800 chars)
{"took":727,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":9,"relation":"eq"},"max_score":25.070961,"hits":[{"_index":"edgar_file","_id":"0001538210-23-000011:neximmuneinc-proxyx2023.htm","_score":25.070961,"_source":{"ciks":["0001538210"],"period_ending":"2023-04-04","file_num":["001-40045"],"display_names":["NexImmune, Inc. (NEXI) (CIK 0001538210)"],"xsl":null,"sequence":1,"root_forms":["DEF 14A"],"file_date":"2023-04-04","biz_states":["MD"],"sics":["2834"],"form":"DEF 14A","adsh":"0001538210-23-000011","film_num":["23798086"],"biz_locations":["Gaithersburg, MD"],"file_type":"DEF 14A","file_description":"DEF…

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/4233/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4233/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4233/receipt.json