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: 4 — CROW MICHAEL M (2021-06-07) |
|---|---|
| Original URL | https://www.sec.gov/Archives/edgar/data/1445305/000144530521000080/0001445305-21-000080-index.htm |
| Publication | SEC EDGAR |
| Source type | sec_filing |
| Date | 2021-06-07 |
| Entity | Michael M. Crow |
| Captured | 1970-01-01T00:00:00.000Z UTC |
| Hash computed at | 2026-06-01T02:05:53.382Z UTC |
| SHA-256 | a33a034b617ec12a7bee1cf3e000d5eeb1179fb892c41d1aa5f1304051ed8246 |
| Content length | 708 bytes |
{
"ciks": [
"0001244046",
"0001445305"
],
"period_ending": "2021-06-03",
"file_num": [
"001-36773"
],
"display_names": [
"CROW MICHAEL M (CIK 0001244046)",
"WORKIVA INC (WK) (CIK 0001445305)"
],
"xsl": null,
"sequence": 2,
"root_forms": [
"4"
],
"file_date": "2021-06-07",
"biz_states": [
"IA"
],
"sics": [
"7372"
],
"form": "4",
"adsh": "0001445305-21-000080",
"film_num": [
"21999759"
],
"biz_locations": [
"",
"Ames, IA"
],
"file_type": "EX-24",
"file_description": "POWER OF ATTORNEY FOR: /S/ BRANDON E. ZIEGLER AS ATTORNEY-IN-FACT FOR MICHAEL M. CROW",
"inc_states": [
"",
"DE"
],
"items": []
}
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/67108/verify and our server will compare for you:
curl -X POST https://www.goblinhouse.net/source/67108/verify \ -H "Content-Type: text/plain" \ --data-binary @document.txt
Companion machine-readable receipt: /source/67108/receipt.json