Chain of custody receipt

Source #67076

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: 10-K — ProMIS Neurosciences Inc. (2023-03-08)
Original URLhttps://www.sec.gov/Archives/edgar/data/1374339/000155837023003167/0001558370-23-003167-index.htm
PublicationSEC EDGAR
Source typesec_filing
Date2023-03-08
EntityPROMIS
Captured1970-01-01T00:00:00.000Z UTC
Hash computed at2026-06-01T02:03:39.644Z UTC
SHA-2562668056a5ed7bdc2add2edf0a2fc4c7c49580b5d7d8772c346d9044341e9552a
Content length576 bytes
Content preview (first 800 chars) 
{
  "ciks": [
    "0001374339"
  ],
  "period_ending": "2022-12-31",
  "file_num": [
    "001-41429"
  ],
  "display_names": [
    "ProMIS Neurosciences Inc.  (PMN)  (CIK 0001374339)"
  ],
  "xsl": null,
  "sequence": 1,
  "root_forms": [
    "10-K"
  ],
  "file_date": "2023-03-08",
  "biz_states": [
    "A6"
  ],
  "sics": [
    "2834"
  ],
  "form": "10-K",
  "adsh": "0001558370-23-003167",
  "film_num": [
    "23717003"
  ],
  "biz_locations": [
    "Toronto, A6"
  ],
  "file_type": "10-K",
  "file_description": "10-K",
  "inc_states": [
    "Z4"
  ],
  "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/67076/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/67076/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/67076/receipt.json