Chain of custody receipt

Source #40328

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 — Wellington Management Company LLP (2018-03-28)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Wellington%20Management%20Company%20LLP%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2018-03-28
EntityWellington Management Company LLP
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:15:17.880Z UTC
SHA-256cd60557479623a4316f1f4b3aae34696aeb52dfa7d70c485896d1c6297a3c02f
Content length567 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001261333"
  ],
  "period_ending": null,
  "file_num": [
    "333-223990"
  ],
  "display_names": [
    "DOCUSIGN INC  (DOCU)  (CIK 0001261333)"
  ],
  "xsl": null,
  "sequence": 9,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2018-03-28",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "7372"
  ],
  "form": "S-1",
  "adsh": "0001193125-18-099555",
  "film_num": [
    "18719154"
  ],
  "biz_locations": [
    "San Francisco, CA"
  ],
  "file_type": "EX-10.1",
  "file_description": "EX-10.1",
  "inc_states": [
    "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/40328/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/40328/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/40328/receipt.json