Chain of custody receipt

Source #40777

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 — Boris Nikolic (2017-06-06)
Original URLhttps://efts.sec.gov/LATEST/search-index?q=%22Boris%20Nikolic%22&dateRange=custom&forms=4,SC%2013D,SC%2013G,DEF%2014A,10-K,10-Q
PublicationSEC EDGAR
Source typesec_filing
Date2017-06-06
EntityBoris Nikolic
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-05-13T05:13:47.632Z UTC
SHA-256078d03cb656c4244d528a56d111d8b0671f7e927a35a0d92a1ced89442789c72
Content length680 bytes
Content preview (first 800 chars)
{
  "ciks": [
    "0001650664",
    "0001657378"
  ],
  "period_ending": "2017-06-02",
  "file_num": [
    "001-37687"
  ],
  "display_names": [
    "Editas Medicine, Inc.  (EDIT)  (CIK 0001650664)",
    "Nikolic Boris  (CIK 0001657378)"
  ],
  "xsl": "xslF345X03",
  "schema_version": "X0306",
  "sequence": 1,
  "root_forms": [
    "4"
  ],
  "file_date": "2017-06-06",
  "biz_states": [
    "MA"
  ],
  "sics": [
    "2836"
  ],
  "form": "4",
  "adsh": "0001179110-17-008651",
  "film_num": [
    "17894242"
  ],
  "biz_locations": [
    "Cambridge, MA",
    ""
  ],
  "file_type": "4",
  "file_description": "FORM 4 -",
  "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/40777/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/40777/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/40777/receipt.json