Chain of custody receipt

Source #43680

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 — Patrick Callahan (2011-04-18)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Patrick%20Callahan%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2011-04-18
EntityPatrick Callahan
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:05:26.323Z UTC
SHA-2565203de2f54b557124fed390b67a914d8d8983ce9112ebe0681c77ae097c0e97e
Content length598 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001334814"
  ],
  "period_ending": null,
  "file_num": [
    "333-173570"
  ],
  "display_names": [
    "ZILLOW INC  (CIK 0001334814)"
  ],
  "xsl": null,
  "sequence": 9,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2011-04-18",
  "biz_states": [
    "WA"
  ],
  "sics": [],
  "form": "S-1",
  "adsh": "0001193125-11-100697",
  "film_num": [
    "11765110"
  ],
  "biz_locations": [
    "Seattle, WA"
  ],
  "file_type": "EX-10.8",
  "file_description": "FIRST AMENDMENT BY AND BETWEEN EOP-NORTHWEST PROPERTIES, L.L.C. AND ZILLOW, INC.",
  "inc_states": [],
  "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/43680/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/43680/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/43680/receipt.json