Cardano's $Hydra scaling solution achieved a record-breaking 15.5 billion transactions in 24 hours, surpassing Visa's daily average of 700 million. Introduced in March 2020, $Hydra enhances Cardano's transaction throughput through horizontal scaling, allowing multiple off-chain processing units to execute transactions in parallel. During the $Hydra Doom tournament in Las Vegas, $Hydra processed transactions at 35 frames per second, reaching over 1 million transactions per second, far exceeding Visa's 24,000 TPS. This milestone demonstrates $Hydra's scalability and potential to transform blockchain technology, offering decentralized benefits over traditional payment processors.