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: filing — Mark Zuckerberg (2021-01-27) |
|---|---|
| Original URL | https://efts.sec.gov/LATEST/search-index?q=%22Mark%20Zuckerberg%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q |
| Publication | SEC EDGAR |
| Source type | sec_filing |
| Date | 2021-01-27 |
| Entity | Mark Zuckerberg |
| Captured | 1970-01-01T00:00:00.000Z UTC |
| Hash computed at | 2026-05-19T02:46:40.454Z UTC |
| SHA-256 | 8d5929bc3979f00dbc6dbd661ccdd46d81677dfe97972a07cefa7015b8bdedb4 |
| Content length | 672 bytes |
{
"ciks": [
"0001548760",
"0001326801"
],
"period_ending": "2021-01-27",
"file_num": [
"001-35551"
],
"display_names": [
"Zuckerberg Mark (CIK 0001548760)",
"Facebook Inc (META) (CIK 0001326801)"
],
"xsl": "xslF345X03",
"schema_version": "X0306",
"sequence": 1,
"root_forms": [
"4"
],
"file_date": "2021-01-27",
"biz_states": [
"CA"
],
"sics": [
"7370"
],
"form": "4",
"adsh": "0000950103-21-001110",
"film_num": [
"21561849"
],
"biz_locations": [
"",
"Menlo Park, CA"
],
"file_type": "4",
"file_description": "FORM 4",
"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/59908/verify and our server will compare for you:
curl -X POST https://www.goblinhouse.net/source/59908/verify \ -H "Content-Type: text/plain" \ --data-binary @document.txt
Companion machine-readable receipt: /source/59908/receipt.json