Chain of custody receipt

Source #40256

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 — Applied Materials Korea (AMK) (2017-12-15)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Applied%20Materials%20Korea%20(AMK)%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2017-12-15
EntityApplied Materials Korea (AMK)
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:15:17.880Z UTC
SHA-256b1ee6832e608e874e185aaf46d37f33eef5753ff755f74bf5ea3411384ec1ffc
Content length598 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000006951"
  ],
  "period_ending": "2017-10-29",
  "file_num": [
    "000-06920"
  ],
  "display_names": [
    "APPLIED MATERIALS INC /DE  (AMAT)  (CIK 0000006951)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2017-12-15",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "3674"
  ],
  "form": "10-K",
  "adsh": "0000006951-17-000038",
  "film_num": [
    "171259411"
  ],
  "biz_locations": [
    "Santa Clara, CA"
  ],
  "file_type": "10-K",
  "file_description": "AMAT 10.29.2017 10-K",
  "inc_states": [
    "DC"
  ],
  "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/40256/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/40256/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/40256/receipt.json