Chain of custody receipt

Source #48008

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 — Sky Dayton (2012-02-14)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Sky%20Dayton%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2012-02-14
EntitySky Dayton
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:14:36.745Z UTC
SHA-2561220482a0b6a9e29e08d84ad0d78e1f44b4d688c954da65730b258cc82385779
Content length661 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001055435",
    "0001169988"
  ],
  "period_ending": null,
  "file_num": [
    "005-86647"
  ],
  "display_names": [
    "DAYTON SKY D  (CIK 0001055435)",
    "BOINGO WIRELESS INC  (CIK 0001169988)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2012-02-14",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "0000",
    "4899"
  ],
  "form": "SC 13G",
  "adsh": "0001104659-12-009663",
  "film_num": [
    "12608051"
  ],
  "biz_locations": [
    "",
    "Los Angeles, CA"
  ],
  "file_type": "SC 13G",
  "file_description": "SC 13G",
  "inc_states": [
    "GA",
    "",
    "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/48008/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/48008/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/48008/receipt.json