Proof of Transfer is the new thing. Ready for stacks. Stack is preparing to release Stacks 2.1 in the coming days, a major update to the Stacks Blockchain 2.0 released on Jan. 14, 2021. Stacks is built on top of the Bitcoin blockchain, leveraging its security and robustness while extending its functionality. Stacks introduces a unique consensus mechanism called Proof of Transfer (PoX), which connects the Stacks blockchain to Bitcoin.

金色财经报道，比特币 Layer2 网络 Stacks 宣布已激活 2.1 版本，对 Stacking 进行了多项改进，将消除 Stacking、PoX 奖励和安全机制的低效或混乱方面，并通过更新大量 Clarity 语言关键字让开发人员更易于构建跨链桥和去中心化矿池等项目。 此外，升级增强了矿工使用本地隔离验证或主根 UTXO 进行挖掘的能力。Stacks 2.1 解锁了将 Stacks 资产直接发送到比特币地址的能力。