Lightspark Sync：该公司宣布新产品和功能，允许用户使用比特币和法定货币进行全球支付

该公司宣布推出了 Spark 的 alpha 版本，这是一种比特币第 2 层，可与闪电网络互操作，并且价格更便宜

Lightspark, a Web3 payments company, announced new products and features at its first partner summit on Thursday.

Web3 支付公司 Lightspark 在周四的首届合作伙伴峰会上宣布了新产品和功能。

The new products include Spark, a Bitcoin Layer 2 that’s interoperable with Lightning, and UMA Extend, a service that integrates the Lightning Network with traditional banking systems.

新产品包括 Spark（可与闪电网络互操作的比特币第 2 层）和 UMA Extend（一项将闪电网络与传统银行系统集成的服务）。

The company also announced new capabilities for UMA, its open-source and regulatory compliant payment solution. With UMA Auth, users can tip, pay subscription fees and make payments to merchants within apps.

该公司还宣布了其开源且符合监管要求的支付解决方案 UMA 的新功能。借助 UMA Auth，用户可以在应用程序内给小费、支付订阅费以及向商家付款。

Lightspark CEO David Marcus speaking at Lightspark Sync.

Lightspark 首席执行官 David Marcus 在 Lightspark Sync 上发表讲话。

Announced at the event were an alpha version of Spark, a Bitcoin Layer 2 that’s interoperable with Lightning and that makes it cheaper to onboard users to a non-custodial Bitcoin layer, and new capabilities for UMA, the company’s open-source and regulatory compliant payment solution that makes sending money as simple as sending an email.

活动中宣布了 Spark 的 alpha 版本，这是一个可与闪电网络互操作的比特币第 2 层，可以让用户更便宜地使用非托管比特币层，以及 UMA（该公司的开源且符合监管要求的支付）的新功能使汇款就像发送电子邮件一样简单的解决方案。

With UMA Extend, the Lightning Network can serve as a bridge between traditional banks globally, while with UMA Auth and UMA Request, UMA users can tip, pay subscription fees and make payments to merchants within apps.

通过UMA Extend，闪电网络可以充当全球传统银行之间的桥梁，而通过UMA Auth和UMA Request，UMA用户可以在应用程序内向商家支付小费、支付订阅费和付款。

Spark — Lightspark’s Bitcoin Layer 2

Spark — Lightspark 的比特币第 2 层

Spark is a Layer 2 protocol for Bitcoin that leverages statechain technology. In short, users can hold fractions of bitcoin off-chain, and transfer these by sending private keys to other users (rather than signing transactions with the keys).

Spark 是利用状态链技术的比特币第 2 层协议。简而言之，用户可以在链外持有部分比特币，并通过将私钥发送给其他用户（而不是用密钥签署交易）来转移这些比特币。

Lightspark created Spark to better support the onboarding of users to the Lightning Network, which normally requires an on-chain transaction for each payment channel as well as the locking up of some amount of bitcoin in these channels so users can send and receive transactions.

Lightspark 创建 Spark 是为了更好地支持用户加入闪电网络，这通常需要每个支付通道进行链上交易，并在这些通道中锁定一定数量的比特币，以便用户可以发送和接收交易。

The layer 2 was primarily borne from the frustration that the Lightspark team encountered in trying to create a non-custodial Lightning wallet for users.

Layer 2 主要是由于 Lightspark 团队在尝试为用户创建非托管闪电钱包时遇到的挫折而产生的。

“Self-custodial Lightning wallets, especially at scale, just aren’t viable,” Lightspark CTO Kevin Hurley told Bitcoin Magazine.

Lightspark 首席技术官 Kevin Hurley 告诉《比特币杂志》，“自我托管的闪电钱包，尤其是大规模的，是不可行的。”

“If you are opening channels for billions of users, fees are going to go through the roof, and you're going to fill up block space. It's just something that's not going to be reasonable and you lock up liquidity for every single user,” he added.

“如果你要为数十亿用户开放渠道，费用将会飙升，并且你将会填满区块空间。这只是不合理的事情，你会锁定每个用户的流动性，”他补充道。

Hurley also shared that Lightspark didn’t want to wait for the enabling of Bitcoin opcodes (like CheckTemplateVerify or TapleafUpdateVerify) that would make it cheaper to open new Lightning channels. Lightspark wanted to offer users a non-custodial option immediately.

Hurley 还表示，Lightspark 不想等待比特币操作码（如 CheckTemplateVerify 或 TapleafUpdateVerify）的启用，因为这将使打开新的闪电通道变得更便宜。 Lightspark 希望立即为用户提供非托管选项。

So, they built Spark, a Bitcoin Layer 2 that offers users cheap, instant payments as well as a permissionless, unilateral exit to the Bitcoin base layer. It also enables offline receive, or the ability to receive bitcoin even when your device isn’t connected to the internet.

因此，他们构建了 Spark，这是一个比特币第 2 层，为用户提供廉价、即时的支付以及无需许可、单方面退出比特币基础层的功能。它还支持离线接收，或者即使您的设备未连接到互联网也能够接收比特币。

Besides statechains, Spark also utilizes atomic swap technology. Its design is similar to that of Mercury Layer in that it enables the off-chain transfer of ownership of Bitcoin UTXOs while benefiting from near instant and fee-free transactions, according to Hurley.

除了状态链之外，Spark 还利用原子交换技术。 Hurley 表示，其设计与 Mercury Layer 类似，可以实现比特币 UTXO 所有权的链外转移，同时受益于近乎即时且免费的交易。

“Mercury has a lot of core limitations that we go beyond,” explained Hurley.

“水星有很多我们超越的核心限制，”赫尔利解释道。

“In Mercury, for example, you can transfer whole UTXOs only. You have absolute time bombs where you have to go back on chain at some absolute time. So, you can only do so many transactions. Also, we pull in different pieces like connector transactions from Ark, for example, but, other than that, we're not similar to Ark at all,” he explained.

“例如，在 Mercury 中，您只能转移整个 UTXO。你有绝对定时炸弹，你必须在某个绝对时间回到链条上。因此，您只能进行这么多交易。此外，我们还引入了不同的部分，例如来自 Ark 的连接器交易，但除此之外，我们与 Ark 根本不相似，”他解释道。

“I think it's hard to compare it to something, because it pulls in a lot of different components, and I think the trade-offs that we chose to make are different than many others probably chose to make.”

“我认为很难将它与某些东西进行比较，因为它包含了很多不同的组件，而且我认为我们选择做出的权衡与许多其他人可能选择做出的权衡不同。”

Besides bitcoin, it’s also possible to issue and use stablecoins on Spark. Or you can issue stablecoins via Taproot assets, LRC-20 or RGB on the base layer and transfer them to Spark.

除了比特币之外，还可以在 Spark 上发行和使用稳定币。或者您可以通过底层的 Taproot 资产、LRC-20 或 RGB 发行稳定币并将其转移到 Spark。

A unique dimension of Spark, though, is that the assets on the layer 2 are all UMA enabled.

不过，Spark 的一个独特之处在于第 2 层上的资产均启用了 UMA。

“You can now have non-custodial users sending directly to the bank accounts of UMA Extend users,” said Hurley, mentioning one of the new functionalities of UMA addresses.

“现在，您可以让非托管用户直接向 UMA Extend 用户的银行账户发送数据，”Hurley 提到 UMA 地址的一项新功能时说道。

Lightspark CTO Kevin Hurley speaking at Lightspark Sync.

Lightspark 首席技术官 Kevin Hurley 在 Lightspark Sync 上发表讲话。

UMA Extend

UMA扩展

UMA Extend integrates the Lightning Network with traditional banking systems, allowing users to make international bank transfers in seconds. With this new technology, UMA Extend users can send any other UMA Extend user a near instant cross-border payment from one bank to another over Lightning as easily as sending an email.

UMA Extend将闪电网络与传统银行系统集成，使用户可以在几秒钟内进行国际银行转账。借助这项新技术，UMA Extend 用户可以通过闪电网络向任何其他 UMA Extend 用户发送近乎即时的跨境支付，从一家银行到另一家银行，就像发送电子邮件一样简单。

“It’s designed to facilitate money movement across any currency,” Nicolas Cabrera, VP of Product at Lightspark, told Bitcoin Magazine. “I can be in Brazil sending my local currency, the Brazilian real, to a user based in Europe that wants to receive euros or someone in the US who wants to receive USD.”

Lightspark 产品副总裁 Nicolas Cabrera 告诉《比特币杂志》：“它的设计目的是促进任何货币之间的资金流动。” “我可以在巴西将我的当地货币巴西雷亚尔发送给想要接收欧元的欧洲用户或想要接收美元的美国用户。”

The Brazilian reals leave the sender’s bank account, are converted into sats

巴西雷亚尔离开发送者的银行账户，转换为 sats