Chain of custody receipt

Source #5161

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: American Immigration Council — 2019 (EIN: 52-1549711)
Original URLhttps://projects.propublica.org/nonprofits/download-filing?path=04_2021_prefixes_52-54%2F521549711_201912_990_2021042117979149.pdf
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2019
EntityAmerican Immigration Council
Captured2026-04-12T17:39:04.882Z UTC
Hash computed at2026-04-12T17:39:04.882Z UTC
SHA-256b23a810f4aa6516c598249e69f99d9f832c6e0d93da71e3cc58661473d5fdfc4
Content length2,972 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 521549711,
    "ein": 521549711,
    "name": "American Immigration Council",
    "careofname": null,
    "address": "1331 G ST NW STE 200",
    "city": "Washington",
    "state": "DC",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "1000",
    "ruling_date": "1989-05-01",
    "deductibility_code": 1,
    "foundation_code": 15,
    "activity_codes": "461000000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 8,
    "income_code": 8,
    "filing_requirement_code": 1,
    "pf_filing_requirement_code": 0,
    "accounting_period": 12,
    "asset_amount": 13669866,
    "income_amount": 12057321…

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/5161/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5161/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5161/receipt.json