Chain of custody receipt

Source #4071

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: Hawaii Coalition For Health — 2023 (EIN: 94-3266455)
Original URLhttps://projects.propublica.org/nonprofits/organizations/943266455
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2023
EntityHealthy Hawaii Coalition
Captured2026-04-12T01:49:29.881Z UTC
Hash computed at2026-04-12T01:49:29.881Z UTC
SHA-256dceb25c9aa16885f58b6870e1a01bd1a07693da693c0431015a3712a490990a0
Content length2,833 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 943266455,
    "ein": 943266455,
    "name": "Hawaii Coalition For Health",
    "careofname": "% RAFAEL DEL CASTILLO",
    "address": "289 KAWAIHAE ST APT 222",
    "city": "Honolulu",
    "state": "HI",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "1000",
    "ruling_date": "2022-03-01",
    "deductibility_code": 1,
    "foundation_code": 16,
    "activity_codes": "994531000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 6,
    "income_code": 4,
    "filing_requirement_code": 1,
    "pf_filing_requirement_code": 0,
    "accounting_period": 12,
    "asset_amount": 1017401…

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/4071/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4071/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4071/receipt.json