Chain of custody receipt

Source #64710

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: SC 13G/A — MCKESSON CORP (2012-02-13)
Original URLhttps://www.sec.gov/Archives/edgar/data/927653/000108636412001827/0001086364-12-001827-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2012-02-13
EntityMcKesson Corp
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T01:16:43.716Z UTC
SHA-256cd87e3e8f90642a2a26372a8b22185cfe999ae4d7b17a7339064584b6f506bd1
Content length687 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000927653",
    "0001364742"
  ],
  "period_ending": null,
  "file_num": [
    "005-44207"
  ],
  "display_names": [
    "MCKESSON CORP  (MCK)  (CIK 0000927653)",
    "BlackRock Inc.  (BLK)  (CIK 0001364742)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2012-02-13",
  "biz_states": [
    "CA",
    "NY"
  ],
  "sics": [
    "5122",
    "6211"
  ],
  "form": "SC 13G/A",
  "adsh": "0001086364-12-001827",
  "film_num": [
    "12597804"
  ],
  "biz_locations": [
    "San Francisco, CA",
    "New York, NY"
  ],
  "file_type": "SC 13G/A",
  "file_description": null,
  "inc_states": [
    "DE",
    "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/64710/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/64710/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/64710/receipt.json