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Verify a record yourself

These are real payments from Ohio's checkbook. Pick one and run the check. Your browser does all of the math and reads the answer from Base directly, so a change to the record anywhere, even in our database, would show up as a mismatch.

Payee
FILLMORE CONSTRUCTION
Department
Department of Transportation
Amount
$2,000,000.00
Date
March 11, 2026
Category
Construction-Roads/higways
Batch
#120, 26,372 records, March 1, 2026 to March 31, 2026
  1. Rebuild the record fingerprint
    Hash the record's eight published fields: date, amount, payee, department, category and more.
  2. Climb the proof to the batch root
    Combine the fingerprint with 15 sibling hashes, one level at a time, up to a single root.
  3. Compare with the root on Base
    Read the root written to Base for batch 120, straight from the public registry.
View the registry contract

Every record, checkable like this one.

In the full platform, every one of the 1,222,688 records can be searched and verified the same way.

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