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: SC 13G/A — BERKSHIRE HATHAWAY INC (BRK-A, BRK-B) (2020-02-14) |
|---|---|
| Original URL | https://www.sec.gov/Archives/edgar/data/1390777/000119312520038343/0001193125-20-038343-index.htm |
| Publication | SEC EDGAR |
| Source type | sec_filing |
| Date | 2020-02-14 |
| Entity | Berkshire Hathaway |
| Captured | 1970-01-01T00:00:00.000Z UTC |
| Hash computed at | 2026-05-31T03:40:44.664Z UTC |
| SHA-256 | a0941f76717ea04afb223fddae9d655f62e1faa5a44eaaa2c6f5f3e97b1067f2 |
| Content length | 716 bytes |
{
"ciks": [
"0001390777",
"0001067983"
],
"period_ending": null,
"file_num": [
"005-83627"
],
"display_names": [
"Bank of New York Mellon Corp (BK) (CIK 0001390777)",
"BERKSHIRE HATHAWAY INC (BRK-A, BRK-B) (CIK 0001067983)"
],
"xsl": null,
"sequence": 1,
"root_forms": [
"SC 13G"
],
"file_date": "2020-02-14",
"biz_states": [
"NY",
"NE"
],
"sics": [
"6022",
"6331"
],
"form": "SC 13G/A",
"adsh": "0001193125-20-038343",
"film_num": [
"20620577"
],
"biz_locations": [
"New York, NY",
"Omaha, NE"
],
"file_type": "SC 13G/A",
"file_description": "SC 13G/A",
"inc_states": [
"DE",
"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/65338/verify and our server will compare for you:
curl -X POST https://www.goblinhouse.net/source/65338/verify \ -H "Content-Type: text/plain" \ --data-binary @document.txt
Companion machine-readable receipt: /source/65338/receipt.json