Server Clock
Before claiming accuracy, we disclose what was measured.
Millisecond-precise, with lap timing — the TicketTimer stopwatch.
Independent clock models
The target HTTP clock and UTC reference clock each have their own monotonic anchor. Neither is used as a substitute for the other.
±U is estimated uncertainty
It combines round-trip delay, retained low-delay sample residuals, and drift uncertainty over time. Coverage is validated separately against controlled ground truth.
The web measurement boundary
The web measures only our reference endpoint and CORS-verified targets. We do not build an arbitrary URL proxy.
What is not frozen yet
Sample counts, uncertainty thresholds, and request modes per external target are finalized through repeat pre-release measurement. Provisional values are not product accuracy claims.