Chain of custody receipt

Source #66789

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: SC 13G/A — DAYTON SKY D (2015-04-17)
Original URLhttps://www.sec.gov/Archives/edgar/data/1169988/000110465915028116/0001104659-15-028116-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2015-04-17
EntitySky Dayton
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T01:40:33.813Z UTC
SHA-25690a6c71ea9c7ab137b0ddb4400ae83adbaadcb18756f418f30ebd89e1a40f37e
Content length667 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001169988",
    "0001055435"
  ],
  "period_ending": null,
  "file_num": [
    "005-86647"
  ],
  "display_names": [
    "BOINGO WIRELESS INC  (CIK 0001169988)",
    "DAYTON SKY D  (CIK 0001055435)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "SC 13G"
  ],
  "file_date": "2015-04-17",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "4899",
    "0000"
  ],
  "form": "SC 13G/A",
  "adsh": "0001104659-15-028116",
  "film_num": [
    "15776478"
  ],
  "biz_locations": [
    "Los Angeles, CA",
    ""
  ],
  "file_type": "SC 13G/A",
  "file_description": "SC 13G/A",
  "inc_states": [
    "DE",
    "GA",
    ""
  ],
  "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/66789/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/66789/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/66789/receipt.json