Chain of custody receipt

Source #65738

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 13D/A — BlackRock Inc. (2022-06-23)
Original URLhttps://www.sec.gov/Archives/edgar/data/1731388/000089534522000527/0000895345-22-000527-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2022-06-23
EntityBlackRock
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T05:17:29.073Z UTC
SHA-2566098d0b8ed3033eb685c1474ecb744c9eb53b20acd047488972286cdaf56d91d
Content length683 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001731388",
    "0001364742"
  ],
  "period_ending": null,
  "file_num": [
    "005-90507"
  ],
  "display_names": [
    "EuroDry Ltd.  (EDRY)  (CIK 0001731388)",
    "BlackRock Inc.  (BLK)  (CIK 0001364742)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13D"
  ],
  "file_date": "2022-06-23",
  "biz_states": [
    "J3",
    "NY"
  ],
  "sics": [
    "4400",
    "6211"
  ],
  "form": "SC 13D/A",
  "adsh": "0000895345-22-000527",
  "film_num": [
    "221035615"
  ],
  "biz_locations": [
    "Maroussi, J3",
    "New York, NY"
  ],
  "file_type": "SC 13D/A",
  "file_description": null,
  "inc_states": [
    "1T",
    "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/65738/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65738/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65738/receipt.json