Chain of custody receipt

Source #62012

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 Consolidated Natural Resources (2021-05-20)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22American%20Consolidated%20Natural%20Resources%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-05-20
EntityAmerican Consolidated Natural Resources
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T02:32:53.489Z UTC
SHA-2560b022cebee7efa62b0f07f3a38661ee7488fe446347f065c4483c6f0d0f8def6
Content length597 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001744494"
  ],
  "period_ending": "2020-12-31",
  "file_num": [
    "001-38742"
  ],
  "display_names": [
    "ADVENT TECHNOLOGIES HOLDINGS, INC.  (ADN, ADNWW)  (CIK 0001744494)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2021-05-20",
  "biz_states": [
    "MA"
  ],
  "sics": [
    "3690"
  ],
  "form": "10-K/A",
  "adsh": "0001567619-21-010744",
  "film_num": [
    "21942049"
  ],
  "biz_locations": [
    "Boston, MA"
  ],
  "file_type": "10-K/A",
  "file_description": "10-K/A",
  "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/62012/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62012/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62012/receipt.json