{"id":"balance-derived-from-ledger","text":"Account balances are computed by scanning the full ledger on every call to `get_balance`, not cached; the ledger is the single source of truth","truth_value":"IN","source":"entries/2026/06/05/payment-system-payment_system.md","source_url":"","source_hash":"","justifications":[],"dependents":["ledger-supports-asymmetric-read-interpretation","payment-double-entry-guarantees-balance-integrity","payment-ledger-is-fully-auditable"],"metadata":{},"created_at":"","updated_at":"","reviewed_at":"","verified_at":"","retracted_at":"","explanation":{"steps":[{"node":"balance-derived-from-ledger","truth_value":"IN","reason":"premise"}]}}