Cedar Teaching Bank · synthetic control lab

Preserve accepted journals

Try a rewrite, then compare a new append. Watch the original record and committed counter after every attempt.

This deterministic browser model does not connect to a database. Actual PostgreSQL role and concurrency evidence is supplied with the tutorial.

Accepted history

Committed journal count
Original funding · minor units
One reviewed append pathThe trusted service role passes through a reviewed gate before a complete new journal extends accepted history.Trusted roleReviewed gateNew journal→→

Each card is a complete journal. Rejected requests do not remove, replace or amend a card.

Attempt log — synthetic, no SQL execution
StepRequestDecisionCount