Chain of custody receipt

Source #4091

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: Team Tulsa Inc (EIN: 36-4842266)
Original URLhttps://projects.propublica.org/nonprofits/organizations/364842266
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2026
EntityTeam Tulsi
Captured2026-04-12T01:49:31.314Z UTC
Hash computed at2026-04-12T01:49:31.314Z UTC
SHA-2562b511bf34ffadc88446c8ee25e4bc51f051751c93b6957b76040e8ff57a595a9
Content length1,562 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 364842266,
    "ein": 364842266,
    "name": "Team Tulsa Inc",
    "careofname": "% SAMUEL WILSON",
    "address": "9745 E 4TH PL",
    "city": "Tulsa",
    "state": "OK",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "1200",
    "ruling_date": "2016-08-01",
    "deductibility_code": 1,
    "foundation_code": 15,
    "activity_codes": "000000000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 0,
    "income_code": 0,
    "filing_requirement_code": 2,
    "pf_filing_requirement_code": 0,
    "accounting_period": 12,
    "asset_amount": 0,
    "income_amount": 0,
    "revenue_amount": 0…

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/4091/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4091/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4091/receipt.json