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Subscription portability
Keep service value intact across billing boundaries.
A subscription rebase recognizes the unused service period from one provider and creates a controlled, one-time credit at another. It is a credit bridge, not a refund or money transfer.
What this demo proves
Verified source data, exact proration, one-time consumption, idempotent confirmation, append-only accounting, reconciliation, and a customer-readable result.
What it never does
It never accesses a real account, contacts a real billing provider, accepts payment data, issues a refund, cancels renewal, or changes a real subscription.