Chain of custody receipt

Source #62743

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 — National Broadcasters (2019-04-01)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22National%20Assn%20of%20Broadcasters%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2019-04-01
EntityNational Assn of Broadcasters
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-25T07:23:48.757Z UTC
SHA-256ea1445b6ae2a1eb98ffc489bdf6f43bbc67ba71648b170a46517f0bb811aa1de
Content length577 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001565228"
  ],
  "period_ending": "2018-12-31",
  "file_num": [
    "001-35988"
  ],
  "display_names": [
    "Vislink Technologies, Inc.  (VISL)  (CIK 0001565228)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2019-04-01",
  "biz_states": [
    "FL"
  ],
  "sics": [
    "3669"
  ],
  "form": "10-K",
  "adsh": "0001493152-19-004520",
  "film_num": [
    "19720722"
  ],
  "biz_locations": [
    "Sarasota, FL"
  ],
  "file_type": "10-K",
  "file_description": null,
  "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/62743/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/62743/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/62743/receipt.json