Chain of custody receipt

Source #65379

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: 10-K/A — STERLING CONSTRUCTION CO INC (2010-03-18)
Original URLhttps://www.sec.gov/Archives/edgar/data/874238/000087423810000009/0000874238-10-000009-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2010-03-18
EntityConstruction
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T03:41:10.878Z UTC
SHA-2563da664b1c73f2d441921a1d6c4f5195cd2fe81387ca1da4450a62641036f1e5c
Content length637 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0000874238"
  ],
  "period_ending": "2009-12-31",
  "file_num": [
    "001-31993"
  ],
  "display_names": [
    "STERLING CONSTRUCTION CO INC  (STRL)  (CIK 0000874238)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2010-03-18",
  "biz_states": [
    "DE"
  ],
  "sics": [
    "1600"
  ],
  "form": "10-K/A",
  "adsh": "0000874238-10-000009",
  "film_num": [
    "10691481"
  ],
  "biz_locations": [
    "Wilmington, DE"
  ],
  "file_type": "10-K/A",
  "file_description": "STERLING CONSTRUCTION COMPANY 12-31-2009 10-K/A AMD. 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/65379/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65379/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65379/receipt.json