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What's the difference?

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All stages · Demo 388

Ghana TIN

Choice gh / vat / other. P/C/G/V plus ten digits, Luhn on the ten. Jev never doubles. Wrong prefix or ten chars need the shape.

ChoiceGH TIN Luhn in JS

A digit tape. P0012345674 books a GRA plate. A last-digit flip rejects. Ten chars never pass.

replaykind —gh —

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.