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What's the difference?

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All stages · Demo 442

Estonian registry

Choice ee / vat / other. Eight digits starting 8. Jev never mods 10. Seven digits need 8. Distinct from isikukood.

ChoiceREG 3-7-1 in JS

A digit tape. 81234567 books an Äriregister plate. A last-digit flip rejects. Seven digits never pass.

replaykind —reg —

STANDBY

All 4056 stages

Educational stage on jev.page — not the official TypeSafe console. Live calls go to POST https://api.typesafe.ai/v1/systemone from your browser when you paste a key. Without a key, the stage plays a recorded decision shaped like jev-1.13.0. Jev does not write the UI copy.