Ethereum is not instant, but collateral could make it feel that way
Puffer says Google Cloud will operate a gateway for its UniFi network, issuing preconfirmations that guarantee transaction outcomes before Ethereum reaches finality. Puffer says its system is configured for 50-millisecond transactions, but UniFi and Puffer Preconf remain in testing, and real-world speed and reliability are unproven. The proposed system would use collateral and slashing to discourage failed promises, though Puffer has not clarified how penalized funds would compensate users or when the penalty becomes enforceable. A backup gateway is planned, and the first phase will rely on gateways rather than delegated Ethereum validators. The approach could let apps make funds available sooner, but developers must assess the risks and clarify who bears losses if a promise fails.
