Chain of custody receipt

Source #40588

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 — WPP (2021-01-07)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22WPP%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2021-01-07
EntityWPP
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:15:17.880Z UTC
SHA-25679fdaafb01b6df3561cd9350a7e4509f7869adecae5666df4cde1f2b3dd8534c
Content length1,364 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001414564",
    "0001414565",
    "0001770772",
    "0001770767",
    "0001451560",
    "0001414561",
    "0001484612"
  ],
  "period_ending": "2021-01-05",
  "file_num": [
    "001-39513",
    "001-39513",
    "001-39513",
    "001-39513",
    "001-39513",
    "001-39513"
  ],
  "display_names": [
    "Warburg Pincus X GP L.P.  (CIK 0001414564)",
    "Warburg Pincus Private Equity X, L.P.  (CIK 0001414565)",
    "WPX GP, L.P.  (CIK 0001770772)",
    "WP X Finance, L.P.  (CIK 0001770767)",
    "Warburg Pincus X Partners, L.P.  (CIK 0001451560)",
    "Warburg Pincus X, L.P.  (CIK 0001414561)",
    "Outset Medical, Inc.  (OM)  (CIK 0001484612)"
  ],
  "xsl": "xslF345X03",
  "schema_version": "X0306",
  "sequence": 1,
  "root_forms": [
    "4"
  ],
  "file_date"…

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/40588/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/40588/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/40588/receipt.json