Chain of custody receipt

Source #70884

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: 10-K — AMAZON COM INC (2021-02-03)
Original URLhttps://www.sec.gov/Archives/edgar/data/1018724/000101872421000004/0001018724-21-000004-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2021-02-03
EntityAmazon.com, Inc.
Captured2026-09-28T03:47:04.189Z UTC
Hash computed at2026-09-28T03:47:04.189Z UTC
SHA-256c9b5b9733e7531e0e15484151c1e0f7c20a9aaed473f5677d188d1a8244a111d
Content length577 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001018724"
  ],
  "period_ending": "2020-12-31",
  "file_num": [
    "000-22513"
  ],
  "display_names": [
    "AMAZON COM INC  (AMZN)  (CIK 0001018724)"
  ],
  "xsl": null,
  "sequence": 3,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2021-02-03",
  "biz_states": [
    "WA"
  ],
  "sics": [
    "5961"
  ],
  "form": "10-K",
  "adsh": "0001018724-21-000004",
  "film_num": [
    "21583589"
  ],
  "biz_locations": [
    "Seattle, WA"
  ],
  "file_type": "EX-23.1",
  "file_description": "EXHIBIT 23.1",
  "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/70884/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/70884/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/70884/receipt.json