Chain of custody receipt

Source #3939

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.

TitleIRS Form 990: First Look Institute Inc — 2019 (EIN: 80-0951255)
Original URLhttps://projects.propublica.org/nonprofits/download-filing?path=04_2021_prefixes_77-81%2F800951255_201912_990_2021040217863777.pdf
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2019
EntityFirst Look Institute
Captured2026-04-12T01:48:25.069Z UTC
Hash computed at2026-04-12T01:48:25.069Z UTC
SHA-25609beeca0c22b064c5ee7c6e6e3405b9f7b2cb8a144ea4b6d5516c2062bc8a158
Content length2,962 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 800951255,
    "ein": 800951255,
    "name": "First Look Institute Inc",
    "careofname": null,
    "address": "720 UNIVERSITY AVE STE 110",
    "city": "Los Gatos",
    "state": "CA",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "1000",
    "ruling_date": "2015-11-01",
    "deductibility_code": 1,
    "foundation_code": 15,
    "activity_codes": "000000000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 6,
    "income_code": 6,
    "filing_requirement_code": 1,
    "pf_filing_requirement_code": 0,
    "accounting_period": 12,
    "asset_amount": 1787735,
    "income_amount": 1550073…

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/3939/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3939/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3939/receipt.json