简而言之 Radar Chat 于周二推出,将加密消息传递与比特币支付相结合。 该应用程序使用 Signal 协议,但独立于 Signal 开发。 Radar 表示,用户仍然可以控制通过闪电网络发送的比特币。 Cake Wallet 背后团队的一款新应用程序将比特币支付直接引入私人消息传递中。 Radar Chat 于周二推出,将端到端加密消息传递与通过闪电网络的自我托管比特币支付相结合,允许用户通过短信发送比特币,而无需切换应用程序或复制钱包地址。 Radar Chat 和 Cake Wallet 创始人 Vikrant Sharma 告诉 Decrypt:“Radar 背后的想法是,我们交谈的人和我们付款的人通常是同一个人,但消息传递和支付仍然位于不同的地方。” Radar 可在 iOS 和 Android 上使用(该公司澄清 Radar 是与 Cake Wallet 不同的独立公司),它使用 Signal 的开源协议,让用户在私人对话中发送加密消息和比特币支付,而无需在单独的聊天和钱包应用程序之间切换,私钥由用户控制。 你的留言。你的比特币。终于在一起了
Radar 将私人消息传递和自我托管的比特币闪电网络结合在一起,形成一种无缝体验,因为它建立在 Signal 令人难以置信的网络上 - 您已经与之交谈的人会与您同行。 pic.twitter.com/Rg6BBbfvGS Radar.Chat (@RadarChat) 2026 年 7 月 7 日 夏尔马说:“该团队没有从头开始重新发明安全消息传递,而是选择建立在最值得信赖和广泛尊重的隐私技术之一的基础上。” “许多比特币和注重隐私的用户已经依赖 Signal,因此 Radar 建立在熟悉的基础上,同时添加了一些缺失的内容:对话中的本地比特币支付。” Sharma 表示,虽然 PayPal、Cash App 和 Venmo 等应用程序简化了数字支付,但用户经常为了方便而放弃控制权。 “PayPal 和 Cash App 等应用程序使汇款变得更加容易,但它们是集中式服务,”他说。 “他们持有你的钱,他们可以冻结你的账户,他们会看到你进行的每一笔交易。便利是以控制为代价的。”
Radar 使用比特币闪电网络,这是一种第 2 层支付网络,旨在使交易比直接在比特币基础层上发送更快、更便宜。虽然闪电网络通常与以聪(即整个比特币的 1/100,000,000)为单位的小额交易相关,但 Sharma 表示 Radar 并不局限于微交易。 Sharma 表示,在设置过程中,Radar 为用户提供了一个恢复种子短语,以便在另一台设备上恢复他们的比特币,而与其 Signal 帐户关联的加密备份则提供了额外的恢复选项。 “Radar 是独立于 Signal 开发的,”他说,“但我们深深尊重 Signal 团队所做的工作,并为该项目提供财政支持,因为我们相信保护隐私的通信是一项重要的公共利益。” Sharma 表示,Radar 已成功测试了高达 5,000 美元的支付,交易容量由可用的闪电网络流动性决定,而不是由应用程序设置的限制。
“对于大多数人来说,Radar 是围绕日常支付而设计的——购买午餐、分摊费用、偿还朋友费用或发送小费,”夏尔马说。 “这些正是闪电网络所擅长的交易类型,因为它们速度快、成本低,而且几乎可以立即结算。” 每日简报时事通讯 每天从当前的热门新闻报道以及原创专题、播客、视频等开始。
In brief
Radar Chat launched Tuesday, combining encrypted messaging with Bitcoin payments.
The app uses the Signal Protocol but was developed independently from Signal.
Radar says users remain in control of their Bitcoin, which is sent via the Lightning Network.
A new app from the team behind Cake Wallet brings Bitcoin payments directly into private messaging.
Launched Tuesday, Radar Chat combines end-to-end encrypted messaging with self-custodial Bitcoin payments via the Lightning Network, allowing users to send Bitcoin via text messages without having to switch apps or copy wallet addresses.
“The idea behind Radar is that the people we talk to and the people we pay are often the same people, yet messaging and payments still live in separate places,” Radar Chat and Cake Wallet founder Vikrant Sharma told Decrypt.
Available on iOS and Android, Radar—which the company clarified is a separate company from Cake Wallet—uses Signal’s open-source protocol to let users send encrypted messages and Bitcoin payments inside private conversations without switching between separate chat and wallet apps, with private keys controlled by users.
Your messages. Your Bitcoin. Together, at last.
Radar brings private messaging and self-custodial Bitcoin Lightning together in one seamless experience, and because it's built on Signal's incredible network - the people you already talk to come with you. pic.twitter.com/Rg6BBbfvGS
— Radar.Chat (@RadarChat) July 7, 2026
“Rather than reinventing secure messaging from scratch, the team chose to build on one of the most trusted and widely respected privacy technologies available,” Sharma said. “Many Bitcoin and privacy-conscious users already rely on Signal, so Radar builds on a familiar foundation while adding something that has been missing: native Bitcoin payments inside conversations.”
While apps like PayPal, Cash App, and Venmo have simplified digital payments, Sharma said users often trade control for convenience.
“Apps like PayPal and Cash App made sending money easier, but they're centralized services,” he said. “They hold your money, they can freeze your account, and they see every transaction you make. Convenience came at the cost of control.”
Radar uses the Bitcoin Lightning Network, a layer-2 payment network designed to make transactions faster and cheaper than sending directly on Bitcoin’s base layer. While Lightning is often associated with small transactions measured in satoshis—or 1/100,000,000 of a full Bitcoin—Sharma said Radar is not limited to microtransactions.
During setup, Sharma said Radar gives users a recovery seed phrase to restore their Bitcoin on another device, while an encrypted backup tied to their Signal account provides an additional recovery option.
“Radar is developed independently from Signal,” he said, “but we deeply respect the work the Signal team has done and financially support the project, because we believe privacy-preserving communication is an important public good.”
Sharma said Radar has successfully tested payments up to $5,000, with transaction capacity determined by available Lightning Network liquidity rather than limits set by the app.
“For most people, Radar is designed around everyday payments—buying lunch, splitting expenses, paying a friend back, or sending tips,” Sharma said. “Those are exactly the types of transactions Lightning excels at because they’re fast, inexpensive, and settle almost instantly.”
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