Static ReadonlyCASH_Static ReadonlyCENTRAL_The central bank's own (real) operating account id.
Static ReadonlyISSUANCEThe mint source / drain sink — the supply faucet counterparty.
StaticisTrue iff accountId is a sentinel counterparty (no balance row).
StaticnewMint a fresh, opaque, durable account id — a nanoid via the one id seam
(SecurityApi.uuid). The id keys the ledger; the friendly identity
(owner / bank) lives on the AccountBalance registry row — the
"durable id underneath, friendly identity on top" pattern (templatePath
/ ContactsMixin).
The cash↔balance bridge counterparty (deposit from / withdraw to).