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What's the difference?

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All stages · Demo 420

Bulgarian EIK

Choice bg / vat / other. Nine digits; second row if first %11 is 10. Jev never mods 11. Eight digits need 9. Distinct from EGN.

ChoiceEIK 1-2-3 in JS

A digit tape. 123456786 books a Registry plate. A last-digit flip rejects. Eight digits never pass.

replaykind —eik —

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.