Chain of custody receipt

Source #4078

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: Healthy Mothers Healthy Babies Coalition Of Hawaii — 2021 (EIN: 99-0299264)
Original URLhttps://projects.propublica.org/nonprofits/organizations/990299264
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2021
EntityHealthy Hawaii Coalition
Captured2026-04-12T01:49:30.047Z UTC
Hash computed at2026-04-12T01:49:30.047Z UTC
SHA-2567de6876fa35c2a19aeb41d968d1a1ea1dbcb962789326211f6e5e9d5e0905cf4
Content length2,855 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 990299264,
    "ein": 990299264,
    "name": "Healthy Mothers Healthy Babies Coalition Of Hawaii",
    "careofname": "% SUSAN A COLE",
    "address": "245 N KUKUI ST STE 102A",
    "city": "Honolulu",
    "state": "HI",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "1000",
    "ruling_date": "1992-12-01",
    "deductibility_code": 1,
    "foundation_code": 15,
    "activity_codes": "994123000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-06-01",
    "asset_code": 6,
    "income_code": 6,
    "filing_requirement_code": 1,
    "pf_filing_requirement_code": 0,
    "accounting_period": 6,
    "asset_amount"…

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/4078/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4078/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4078/receipt.json