> For the complete documentation index, see [llms.txt](https://docs.runealpha.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.runealpha.xyz/cn/marketplace/what-is-psbts.md).

# ❓什么是 PSBTs 技术?

部分签名比特币交易(PSBTs)是一种数据格式，允许钱包和其他工具交换有关比特币交易的信息以及完成交易所需的签名

可以创建一个PSBTs来标识一组要花费的未花费事务输出(Unspent Transaction output, utxo)和一组接收花费值的输出。

RuneAlpha的市场正在以一些非常棒的方式利用PSBTs的力量:

* **多签交易**: PSBTs 非常适合让多方签署同一笔交易。我们可以混合和匹配买家和卖家的签名，然后将结果广播到比特币网络。它是安全的，为用户节省了一大笔钱.
* **离线签名**: PSBTs 带有方便的元数据，可以帮助设备检查正在签署的交易中涉及的地址和金额。这意味着卖家可以以更低的交易成本列出他们的物品，随时更新，并且仍然保持他们的资产安全可靠。都是关于比特币的生活，对吧?


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