
Fireblocks overhauls EVM transaction handling with configurable timeouts, real-time monitoring, and wallet pools to prevent single-stuck-transaction queue freezes for institutional clients.
Fireblocks has rebuilt its transaction handling system for EVM-compatible blockchains, the company said. The overhaul targets a persistent problem: when one transaction stalls, every subsequent transaction waiting behind it freezes. For institutions moving billions in digital assets, those stalls create operational risk.
The core constraint is the nonce, a counter on every Ethereum account that forces transactions to process in strict numerical order. If transaction 4 gets stuck, transactions 5 through 500 are valid but cannot execute. Fireblocks’ previous system managed nonces centrally, meaning a single stuck transaction could halt the entire pipeline.
The new system distributes that risk. It introduces configurable timeouts at the workspace and transaction level, so institutions can set deadlines. When a transaction sits unconfirmed past its deadline, the system marks it as failed rather than leaving it in limbo. A real-time monitoring layer called Account Traffic Control watches for stuck transactions and fires alerts within minutes. Wallet Pools group transactions across multiple vaults, using health-aware routing to spread the load. If one vault jams, others keep processing.
The announcement focused on EVM-compatible blockchains. Non-EVM chains like Solana and Bitcoin use different transaction models and don’t face the same bottleneck.
For institutions using Fireblocks, the practical benefit is reduced operational risk. Treasury teams can set timeout policies that match their risk tolerance. Operations teams get alerts before a minor stuck transaction becomes a major incident. Wallet Pools contain the blast radius to a single vault rather than the entire pipeline. The company did not name specific cryptocurrencies or tokens affected by the change.
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