Chain of custody receipt

Source #59892

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 — American Federation of Teachers (2007-03-16)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22American%20Federation%20of%20Teachers%20(AFT)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2007-03-16
EntityAmerican Federation of Teachers (AFT)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-17T21:16:24.672Z UTC
SHA-2565727175576a28d712dd605196ff34ab8df78aa0903241e70e4cdef76556221e6
Content length562 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001286862"
  ],
  "period_ending": "2006-12-31",
  "file_num": [
    "000-50952"
  ],
  "display_names": [
    "EDUCATE INC  (CIK 0001286862)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2007-03-16",
  "biz_states": [
    "MD"
  ],
  "sics": [
    "8200"
  ],
  "form": "10-K",
  "adsh": "0001193125-07-057284",
  "film_num": [
    "07701229"
  ],
  "biz_locations": [
    "Baltimore, MD"
  ],
  "file_type": "10-K",
  "file_description": "FORM 10-K",
  "inc_states": [
    "DE"
  ],
  "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/59892/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/59892/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/59892/receipt.json