Chain of custody receipt

Source #65093

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.

Title	SEC EDGAR: 4 — BLACKROCK FINANCIAL MANAGEMENT INC/DE (2020-02-13)
Original URL	https://www.sec.gov/Archives/edgar/data/1576419/000089924320004513/0000899243-20-004513-index.htm
Publication	SEC EDGAR
Source type	`sec_filing`
Date	2020-02-13
Entity	BlackRock Financial Management, Inc.
Captured	1970-01-01T00:00:00.000Z UTC
Hash computed at	2026-05-31T02:40:07.674Z UTC
SHA-256	`890bbd985d0f55d5fd7c5f161bfbfe799842a2c16a4d5d55de4afedcef742e0c`
Content length	1,202 bytes

Content preview (first 800 chars)

{
  "ciks": [
    "0001576419",
    "0001060021",
    "0001086363",
    "0001364742",
    "0001745916"
  ],
  "period_ending": "2020-02-11",
  "file_num": [
    "001-38727",
    "001-38727",
    "001-38727",
    "001-38727"
  ],
  "display_names": [
    "BlackRock Mortgage Ventures, LLC  (CIK 0001576419)",
    "BlackRock Holdco 2, Inc.  (CIK 0001060021)",
    "BLACKROCK FINANCIAL MANAGEMENT INC/DE  (CIK 0001086363)",
    "BlackRock Inc.  (BLK)  (CIK 0001364742)",
    "PennyMac Financial Services, Inc.  (PFSI)  (CIK 0001745916)"
  ],
  "xsl": "xslF345X03",
  "schema_version": "X0306",
  "sequence": 1,
  "root_forms": [
    "4"
  ],
  "file_date": "2020-02-13",
  "biz_states": [
    "NY",
    "DE",
    "CA"
  ],
  "sics": [
    "6282",
    "6021",
    "6211",
    "6162"
  ],
  "form"…

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:

Take the URL field and the original document content.
Concatenate url + '\n' + content and SHA-256 it.
Compare to the SHA-256 row above.

Or POST the candidate content to /source/65093/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65093/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65093/receipt.json