According to @ItsDave_ADA, a real UTxO-based high-frequency trading engine running inside a single open Cardano Hydra head achieved a burst throughput of 875 transactions per second on his laptop (source: @ItsDave_ADA on X). According to @ItsDave_ADA, the throughput figure was reached as a burst inside one Hydra head, highlighting performance for an HFT-style workload rather than base-layer metrics (source: @ItsDave_ADA on X). According to @ItsDave_ADA, the post did not include hardware specifications, sustained TPS, latency measurements, or reproducibility details, limiting independent verification from the tweet alone (source: @ItsDave_ADA on X).