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What's the difference?

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All stages · Demo 114

ABA mill

Choice Chase / Fed from the prefix. Routing numbers use weights 3,7,1. Sum modulo 10 stays in JavaScript.

ChoiceABA routing checksum

A nine-digit plate. One flipped digit fails ACH before money moves.

replaybank —aba —

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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.