Chain of custody receipt

Source #41650

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 — Covington and Burling (2007-03-16)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Covington%20and%20Burling%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2007-03-16
EntityCovington and Burling
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:10:53.003Z UTC
SHA-2562aea4d5470dade1f9f43b6bb15249be4d2e8fb5ee0cce17190af124a9100b4e8
Content length575 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0000352747"
  ],
  "period_ending": "2006-12-31",
  "file_num": [
    "000-16005"
  ],
  "display_names": [
    "UNIGENE LABORATORIES INC  (CIK 0000352747)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2007-03-16",
  "biz_states": [
    "NJ"
  ],
  "sics": [
    "2833"
  ],
  "form": "10-K",
  "adsh": "0001193125-07-057077",
  "film_num": [
    "07700210"
  ],
  "biz_locations": [
    "Fairfield, NJ"
  ],
  "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/41650/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/41650/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/41650/receipt.json