Chain of custody receipt

Source #45485

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 — John Joyce (2011-07-07)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22John%20Joyce%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2011-07-07
EntityJohn Joyce
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:01:59.649Z UTC
SHA-25602e552340b974ea7d02b1d5328d4cf39141f47410d726e7d8904311c4946a2aa
Content length585 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001180079"
  ],
  "period_ending": null,
  "file_num": [
    "333-175393"
  ],
  "display_names": [
    "SILVER SPRING NETWORKS INC  (CIK 0001180079)"
  ],
  "xsl": null,
  "sequence": 10,
  "root_forms": [
    "S-1"
  ],
  "file_date": "2011-07-07",
  "biz_states": [
    "CA"
  ],
  "sics": [],
  "form": "S-1",
  "adsh": "0001193125-11-184100",
  "film_num": [
    "11956923"
  ],
  "biz_locations": [
    "Redwood City, CA"
  ],
  "file_type": "EX-10.8",
  "file_description": "OFFER LETTER EMPLOYMENT AGREEMENT",
  "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/45485/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/45485/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/45485/receipt.json