Chain of custody receipt

Source #5431

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: Defi Education Fund — 2021 (EIN: 87-1014079)
Original URLhttps://projects.propublica.org/nonprofits/download-filing?path=IRS%2F871014079_202112_990O_2023050921184991.pdf
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2021
EntityDeFi Education Fund
Captured2026-04-12T17:40:39.615Z UTC
Hash computed at2026-04-12T17:40:39.615Z UTC
SHA-25639050a4afa5f7dcf8db84c3f79027cf63b5f3961fe8d05e2fc865ab4dd440fcf
Content length2,932 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 871014079,
    "ein": 871014079,
    "name": "Defi Education Fund",
    "careofname": null,
    "address": "1155 F STREET NW STE 1050",
    "city": "Washington",
    "state": "DC",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 4,
    "affiliation_code": 3,
    "classification_codes": "3000",
    "ruling_date": "2022-03-01",
    "deductibility_code": 2,
    "foundation_code": 0,
    "activity_codes": "000000000",
    "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": 18450662,
    "income_amount": 13273908…

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/5431/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/5431/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/5431/receipt.json