On September 11, a new token protocol based on UTXO (Unspent Transaction Output), named Covenant Attested Token (CAT) protocol, appeared on the Bitcoin network. This protocol features no indexer requirements, modularity, programmable minting, and cross-chain interoperability, and can run on any Bitcoin-compatible blockchain that activates OP_CAT. According to community analysis, this may be one of the main factors contributing to the significant increase in transaction fees on the Fractal mainnet. With the introduction of the CAT protocol, demand for blockchain resources has increased, driving up transaction costs. The rise in Fractal mainnet transaction fees reflects the current blockchain ecosystem's enthusiastic response to innovative applications and functionalities, while also reminding users to consider cost factors when conducting transactions.