Citrea Bitcoin ZK Rollup Mainnet Launch Sparks Again the Battle for Block Space Summary

The Bitcoin ZK-rollup project Citrea officially launched its mainnet on January 29, introducing BTC-based DeFi lending and stablecoin ctUSD, aiming to bring idle Bitcoin into the DeFi ecosystem. The project has sparked controversy, with supporters and opponents holding differing views on its impact on Bitcoin miner revenue, and significant data usage during the testnet phase. According to BlockBeats, on January 29, the Bitcoin ZK-rollup project Citrea, funded by Founders Fund and Galaxy Ventures, officially launched its mainnet, offering BTC-collateralized DeFi lending, structured products, and the native USD stablecoin ctUSD, attempting to introduce "idle Bitcoin" into a complete DeFi and payment system. Citrea stated that during the initial phase of the mainnet, active DeFi liquidity could reach $50 million. ctUSD is issued by MoonPay, anchored 1:1 to cash and short-term US Treasuries, and is not a cross-chain asset but is natively issued on Citrea to reduce bridging risks and avoid liquidity fragmentation. The project has also reignited debate: as block subsidies decrease, should Bitcoin miner fee revenue be supported through DeFi, stablecoins, and other non-payment uses? Supporters believe this is a sustainable demand source, while opponents emphasize that Bitcoin block space should focus on simple, censorship-resistant payments. Notably, during the testnet phase, data availability usage once accounted for nearly 10% of Bitcoin's monthly data bandwidth, indicating that Rollups could have a substantial impact on Bitcoin block space. #金价突破5500美元