# Checksum Verification — downloads_all_pdfs.tar.gz
# Date: 2026-09-09

## File Info

| Parameter | Value |
|-----------|-------|
| File | downloads_all_pdfs.tar.gz |
| Size | 18 GB (18,749,325,312 bytes) |
| Files | 522,847 PDFs |

## Checksums

| Type | Value |
|------|-------|
| SHA256 | c7e8b64d61210f9b4313b9f51fe8c05102a19cc51c29a2ba7ec5cdde6d609528 |
| MD5 | ff4557f3cf3ecd6580be44f4bf376477 |

## Verification

| Check | Result |
|-------|--------|
| File exists | ✅ 18 GB |
| Archive readable | ✅ 522,847 files |
| Checksum | ✅ c7e8b64d... |

## CMD Verification

```cmd
certutil -hashfile downloads_all_pdfs.tar.gz SHA256
```

**Expected:** c7e8b64d61210f9b4313b9f51fe8c05102a19cc51c29a2ba7ec5cdde6d609528

## Next Steps

1. **Download** — 18 GB archive
2. **Verify checksum** — certutil
3. **Extract** — 522,847 PDFs