Arc details the engineering behind predictable testnet finality

Arc’s engineering team documented fault injection, workload saturation, and repeatable network tests used to study reliability. The stated ambition is predictable sub-second settlement and high availability, not a claim that every future upgrade will be interruption-free.

That distinction matters for ArcTrenches. Transaction UX must tolerate RPC failure, pending receipts, and network upgrades even when normal finality is fast. The product therefore keeps explicit pending and unavailable states rather than assuming success.