ChainCatcher 消息，Stacks 宣布正式推出 USDCx。这是一款基于 Circle 全新 xReserve 基础设施、由 USDC 支持的稳定币。USDCx 的推出为比特币 Layer 2 生态系统建立了一套原生且具备机构级流动性的美元通道，使资金能够直接在比特币网络结算。
在技术底层方面，USDCx 通过 Circle xReserve 的非托管智能合约发行，可提供加密证明以确保代币透明度。同时，该资产利用 Circle 的跨链传输协议（CCTP）实现了在 15 个以上支持的区块链间的“销毁与铸造”跨链转移，从而规避了第三方网桥的安全风险并解决了流动性碎片化问题。
目前，Stacks 生态内的多个领先协议已开始集成 USDCx。Zest Protocol 将其纳入机构级比特币信贷资金池，Granite 支持用户以 BTC 为抵押品借入 USDCx，而 Bitflow 则推出了相关的深度流动性池与交易对。此外，Xverse、Leather 等主流 Stacks 钱包已实现首日支持。为了优化流动性，官方鼓励原持有 aeUSDC（旧版桥接 USDC）的用户通过 Stacks 官方桥迁移至 USDCx。
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