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.
| Title | SEC EDGAR: 10-K — ALLIANT ENERGY CORP (2009-02-27) |
|---|---|
| Original URL | https://www.sec.gov/Archives/edgar/data/352541/000010783209000001/0000107832-09-000001-index.htm |
| Publication | SEC EDGAR |
| Source type | sec_filing |
| Date | 2009-02-27 |
| Entity | Alliant Energy |
| Captured | 1970-01-01T00:00:00.000Z UTC |
| Hash computed at | 2026-06-09T03:46:12.906Z UTC |
| SHA-256 | dbf0ba775db69417bf380f0577241b770d5128e55d33d4fba69aad3ed09708dd |
| Content length | 888 bytes |
{
"ciks": [
"0000052485",
"0000107832",
"0000352541"
],
"period_ending": "2008-12-31",
"file_num": [
"001-04117",
"000-00337",
"001-09894"
],
"display_names": [
"INTERSTATE POWER & LIGHT CO (CIK 0000052485)",
"WISCONSIN POWER & LIGHT CO (CIK 0000107832)",
"ALLIANT ENERGY CORP (LNT) (CIK 0000352541)"
],
"xsl": null,
"sequence": 1,
"root_forms": [
"10-K"
],
"file_date": "2009-02-27",
"biz_states": [
"IA",
"WI"
],
"sics": [
"4931",
"4931",
"4931"
],
"form": "10-K",
"adsh": "0000107832-09-000001",
"film_num": [
"09642511",
"09642510",
"09642512"
],
"biz_locations": [
"Cedar Rapids, IA",
"Madison, WI",
"Madison, WI"
],
"file_type": "10-K",
"file_description"…
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:
url + '\n' + content and SHA-256 it.Or POST the candidate content to /source/67951/verify and our server will compare for you:
curl -X POST https://www.goblinhouse.net/source/67951/verify \ -H "Content-Type: text/plain" \ --data-binary @document.txt
Companion machine-readable receipt: /source/67951/receipt.json