Chain of custody receipt

Source #5432

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 — MGX (2020-03-16)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22MGX%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typeweb_search
Date2020-03-16
EntityMGX
Captured2026-04-12T17:40:39.999Z UTC
Hash computed at2026-04-12T17:40:39.999Z UTC
SHA-256a173b5fc5b4a797cc1c9eb5efa39eca0c39b79f3d2c9ecf9d2a44e3293b8434b
Content length59,776 bytes
Content preview (first 800 chars)
{"took":1173,"timed_out":false,"_shards":{"total":50,"successful":50,"skipped":0,"failed":0},"hits":{"total":{"value":168,"relation":"eq"},"max_score":21.158913,"hits":[{"_index":"edgar_file","_id":"0001095811-01-001950:f70589ex10-13_4.txt","_score":21.158913,"_source":{"ciks":["0001087779"],"period_ending":"2000-12-31","file_num":["000-26963"],"display_names":["NETRO CORP (CIK 0001087779)"],"xsl":null,"sequence":4,"root_forms":["10-K"],"file_date":"2001-03-30","biz_states":["CA"],"sics":["3663"],"form":"10-K","adsh":"0001095811-01-001950","film_num":["1587424"],"biz_locations":["San Jose, CA"],"file_type":"EX-10.13.4","file_description":"EXHIBIT…

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/5432/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5432/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5432/receipt.json