Chain of custody receipt

Source #45177

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 — Center Safety (2007-03-01)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Center%20for%20AI%20Safety%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2007-03-01
EntityCenter for AI Safety
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:01:59.649Z UTC
SHA-256214e3462f8c8225ae471d869a407c2b4a6fb2a96c603a3ca8c299a4d47b03cd6
Content length566 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000702131"
  ],
  "period_ending": "2006-12-31",
  "file_num": [
    "000-10736"
  ],
  "display_names": [
    "MGI PHARMA INC  (CIK 0000702131)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2007-03-01",
  "biz_states": [
    "MN"
  ],
  "sics": [
    "2834"
  ],
  "form": "10-K",
  "adsh": "0000950133-07-000901",
  "film_num": [
    "07664459"
  ],
  "biz_locations": [
    "Bloomington, MN"
  ],
  "file_type": "10-K",
  "file_description": "FOM 10-K",
  "inc_states": [
    "MN"
  ],
  "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/45177/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/45177/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/45177/receipt.json