Chain of custody receipt

Source #45654

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 — Blackrock Neurotech (2023-03-01)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Blackrock%20Neurotech%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2023-03-01
EntityBlackrock Neurotech
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T04:45:55.076Z UTC
SHA-25659239220dfd686fb35a2747580ee36804f1d300e2d92c1fcc09d5fa016671101
Content length579 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001285550"
  ],
  "period_ending": "2022-12-31",
  "file_num": [
    "001-34822"
  ],
  "display_names": [
    "ClearPoint Neuro, Inc.  (CLPT)  (CIK 0001285550)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2023-03-01",
  "biz_states": [
    "CA"
  ],
  "sics": [
    "3841"
  ],
  "form": "10-K",
  "adsh": "0001285550-23-000020",
  "film_num": [
    "23694843"
  ],
  "biz_locations": [
    "Solana Beach, CA"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "inc_states": [
    "DE"
  ],
  "items": []
}

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/45654/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/45654/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/45654/receipt.json