Chain of custody receipt

Source #62509

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 State, County and Municipal Employees (2020-02-27)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22American%20Federation%20of%20State%2C%20County%20and%20Municipal%20Employees%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2020-02-27
EntityAmerican Federation of State, County and Municipal Employees
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T07:19:56.401Z UTC
SHA-256a50e36d0e6a80fdb0cca51596f99a265abb78132ce39ea13d7ea01e9844e109d
Content length586 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001235010"
  ],
  "period_ending": "2019-12-31",
  "file_num": [
    "000-50797"
  ],
  "display_names": [
    "MOMENTA PHARMACEUTICALS INC  (CIK 0001235010)"
  ],
  "xsl": null,
  "sequence": 3,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2020-02-27",
  "biz_states": [
    "MA"
  ],
  "sics": [
    "2836"
  ],
  "form": "10-K",
  "adsh": "0001235010-20-000003",
  "film_num": [
    "20662533"
  ],
  "biz_locations": [
    "Cambridge, MA"
  ],
  "file_type": "EX-10.43",
  "file_description": "EXHIBIT 10.43",
  "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/62509/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62509/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62509/receipt.json