Chain of custody receipt

Source #3937

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 — 2021 (EIN: 80-0951255)
Original URLhttps://projects.propublica.org/nonprofits/download-filing?path=download990pdf_05_2023_prefixes_80-82%2F800951255_202112_990_2023051021199441.pdf
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2021
EntityFirst Look Institute
Captured2026-04-12T01:48:25.029Z UTC
Hash computed at2026-04-12T01:48:25.029Z UTC
SHA-256fa2970a748bd24c1102a8c25f5552c873ceaca62ab3cf40675432f5308b65877
Content length2,983 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/3937/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/3937/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/3937/receipt.json