Chain of custody receipt

Source #470

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.

TitleResearch: ImmigrationOS - SEC filing
Original URL(none — typed-API result with no web URL)
PublicationPublic Record Research
Source typesec_filing
Date2024
EntityImmigrationOS
Captured2026-04-05T09:02:57.359Z UTC
Hash computed at2026-04-05T09:02:57.359Z UTC
SHA-2569558ac985556cffea5bfd6f2b55f654102fe408ee4335eb5133f6b0476cd39dc
Content length566 bytes
Content preview (first 800 chars) 
Based on available training data through early 2025, there are no confirmed SEC filings directly associated with a company operating under the name 'ImmigrationOS.' This appears to be a private company or startup operating in the immigration technology/legal tech space. Private companies are not required to file with the SEC unless they meet specific thresholds (500+ shareholders and $10M+ in assets, or engage in public securities offerings). The company may operate as a subsidiary, under a different legal entity name, or remain below SEC reporting thresholds.

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/470/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/470/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/470/receipt.json