Chain of custody receipt

Source #12579

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 — Polymarket (2026-03-02)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Polymarket%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2026-03-02
EntityPolymarket
Captured2026-04-23T06:36:26.177Z UTC
Hash computed at2026-04-23T06:36:26.177Z UTC
SHA-25604a4534f73524d4a43cf9bbfd6fbc1f2da6e8f0f2fb1595f6f20ecbeee3ad1ae
Content length9,121 bytes
Content preview (first 800 chars)
{"took":382,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":13,"relation":"eq"},"max_score":15.3041725,"hits":[{"_index":"edgar_file","_id":"0000780571-26-000033:itriex-191insidertradingpo.htm","_score":15.3041725,"_source":{"ciks":["0000780571"],"period_ending":"2025-12-31","file_num":["000-22418"],"display_names":["ITRON, INC. (ITRI) (CIK 0000780571)"],"xsl":null,"sequence":"9","root_forms":["10-K"],"file_date":"2026-02-17","biz_states":["WA"],"sics":["3825"],"form":"10-K","adsh":"0000780571-26-000033","film_num":["26640068"],"biz_locations":["Liberty Lake, WA"],"file_type":"EX-19.1","file_description":"EX-19.1 INSIDER TRADING…

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/12579/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/12579/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/12579/receipt.json