Chain of custody receipt

Source #58921

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: filing — Anthropic (2025-04-25)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Anthropic%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2025-04-25
EntityAnthropic
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-14T17:02:10.686Z UTC
SHA-2561af3bea12178176c9972e41dd9157d4ea7fc0d7cf64c1ae5e874bfb1fb118579
Content length644 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0002065512"
  ],
  "period_ending": null,
  "file_num": [
    "021-544465"
  ],
  "display_names": [
    "Hiive Anthropic Series VII a Series of Hiive Anthropic LLC  (CIK 0002065512)"
  ],
  "xsl": "xslFormDX01",
  "schema_version": "X0708",
  "sequence": 1,
  "root_forms": [
    "D"
  ],
  "file_date": "2025-04-25",
  "biz_states": [
    "DE"
  ],
  "sics": [],
  "form": "D",
  "adsh": "0002065512-25-000001",
  "film_num": [
    "25870070"
  ],
  "biz_locations": [
    "Claymont, DE"
  ],
  "file_type": "D",
  "file_description": null,
  "inc_states": [
    "DE"
  ],
  "items": [
    "06B",
    "3C",
    "3C.1"
  ]
}

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/58921/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/58921/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/58921/receipt.json