Chain of custody receipt

Source #65957

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: D — Kalshi Inc. (2025-12-04)
Original URLhttps://www.sec.gov/Archives/edgar/data/1806928/000123191925000572/0001231919-25-000572-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2025-12-04
EntityKalshi
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-31T05:57:25.727Z UTC
SHA-2564f577f3569f5fcb64f6439f1a008bcbcb9841e52c63b47abba077f7f7320a612
Content length576 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001806928"
  ],
  "period_ending": null,
  "file_num": [
    "021-565831"
  ],
  "display_names": [
    "Kalshi Inc.  (CIK 0001806928)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0708",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2025-12-04",
  "biz_states": [
    "NY"
  ],
  "sics": [],
  "form": "D",
  "adsh": "0001231919-25-000572",
  "film_num": [
    "251550189"
  ],
  "biz_locations": [
    "New York, NY"
  ],
  "file_type": "D",
  "file_description": null,
  "inc_states": [
    "DE"
  ],
  "items": [
    "06B"
  ]
}

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/65957/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/65957/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/65957/receipt.json