During the reconciliation of cross-border multi-currency payment rails, what is the technical requirement for a ledger to achieve finality without needing a trusted third-party intermediary?

To achieve finality in cross-border multi-currency payment rails without a trusted third-party intermediary, a ledger must utilize a distributed consensus mechanism that incorporates atomic settlement. Finality is the state where a transaction is permanently recorded and cannot be reversed or altered. An intermediary is traditionally needed to verify balances and guarantee that both sides of an exchange occur. To remove this, the ledger requires a distributed consensus mechanism, which i....