Receipt 003 · demo, runs in this tab
A log you can check
Each entry in this handoff log carries the hash of the one before it. Tamper with any entry, then run verification and see exactly where the chain breaks. All in this tab.
The log
Five notarized handoff events. Each block commits to the previous block's hash.
Tamper with it
Pick an attack. The log on the left changes; verification on the right finds it.
Verification
Recompute every hash, check every link, in order.
Not verified yetA hash chain shows that a log was altered and exactly where. It does not say who altered it or whether the original entries were true. That is what signatures and approvals are for: see the forge and the playground.