Chain of custody receipt

Source #59057

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: filing — WPP (2019-12-11)
Original URL	https://efts.sec.gov/LATEST/search-index?q=%22WPP%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
Publication	SEC EDGAR
Source type	`sec_filing`
Date	2019-12-11
Entity	WPP
Captured	1970-01-01T00:00:00.000Z UTC
Hash computed at	2026-05-15T00:31:52.028Z UTC
SHA-256	`8a303ab11adb1f915441329dd7618596ab422bba714ba4fd2626bdfac777f21f`
Content length	1,877 bytes

Content preview (first 800 chars)

{
  "ciks": [
    "0001239318",
    "0001162870",
    "0000929408",
    "0001621224",
    "0001621242",
    "0001621874",
    "0001414564",
    "0001414561",
    "0001451560",
    "0001414565",
    "0001535527"
  ],
  "period_ending": "2019-12-09",
  "file_num": [
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933",
    "001-38933"
  ],
  "display_names": [
    "KAYE CHARLES R  (CIK 0001239318)",
    "WARBURG PINCUS LLC  (CIK 0001162870)",
    "WARBURG PINCUS & CO.  (CIK 0000929408)",
    "Warburg Pincus Partners GP LLC  (CIK 0001621224)",
    "Warburg Pincus Partners, L.P.  (CIK 0001621242)",
    "WPP GP LLC  (CIK 0001621874)",
    "Warburg Pincus X GP L.P.  (CIK 0001414564)"…

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/59057/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/59057/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/59057/receipt.json