Chain of custody receipt

Source #42312

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 — Fidelity Management & Research Company (2010-06-11)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Fidelity%20Management%20%26%20Research%20Company%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2010-06-11
EntityFidelity Management & Research Company
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:10:53.003Z UTC
SHA-2565ff299c769b8c3b829e289bebf43d74c8f5183b20f5574d7396121fe67e690c8
Content length584 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000730000"
  ],
  "period_ending": "2010-04-03",
  "file_num": [
    "000-12718"
  ],
  "display_names": [
    "SUPERTEX INC  (CIK 0000730000)"
  ],
  "xsl": null,
  "sequence": 6,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2010-06-11",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "3674"
  ],
  "form": "10-K",
  "adsh": "0000730000-10-000011",
  "film_num": [
    "10891448"
  ],
  "biz_locations": [
    "Sunnyvale, CA"
  ],
  "file_type": "EX-10.1",
  "file_description": "EXHIBIT10.1 NQDCP DOCUMENTS",
  "inc_states": [
    "CA"
  ],
  "items": []
}

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/42312/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/42312/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/42312/receipt.json