Chain of custody receipt

Source #4899

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 990PF: Imec Inc — 2021 (EIN: 77-0540932)
Original URLhttps://projects.propublica.org/nonprofits/download-filing?path=IRS%2F770540932_202112_990PF_2023020120876135.pdf
PublicationIRS Form 990 via ProPublica Nonprofit Explorer
Source typeform_990
Date2021
Entityimec
Captured2026-04-12T17:34:00.817Z UTC
Hash computed at2026-04-12T17:34:00.817Z UTC
SHA-256c6ee25d79d061bd008e331cddfc273a68edebecb9cd565b2d7cb35476b3b726d
Content length4,328 bytes
Content preview (first 800 chars)
{
  "organization": {
    "id": 770540932,
    "ein": 770540932,
    "name": "Imec Inc",
    "careofname": "% MAX MIRGOLI",
    "address": "220 MONTGOMERY ST STE 1027",
    "city": "San Francisco",
    "state": "CA",
    "zipcode": "[ZIP+4 redacted]",
    "exemption_number": 0,
    "subsection_code": 3,
    "affiliation_code": 3,
    "classification_codes": "2000",
    "ruling_date": "2015-09-01",
    "deductibility_code": 1,
    "foundation_code": 3,
    "activity_codes": "000000000",
    "organization_code": 1,
    "exempt_organization_status_code": 1,
    "tax_period": "2024-12-01",
    "asset_code": 6,
    "income_code": 7,
    "filing_requirement_code": 0,
    "pf_filing_requirement_code": 1,
    "accounting_period": 12,
    "asset_amount": 2253290,
    "income_amount": 7940403…

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/4899/verify and our server will compare for you:

curl -X POST https://www.goblinhouse.net/source/4899/verify \
  -H "Content-Type: text/plain" \
  --data-binary @document.txt

Companion machine-readable receipt: /source/4899/receipt.json