Bitlight Labs Completes $9.6 Million Pre-A Round, Led by Amber Group and Fundamental Labs, Aiming to Advance Native Bitcoin Stablecoin Payments Through RGB and the Lightning Network

Bitlight Labs, the Bitcoin RGB protocol and Lightning Network stablecoin payment infrastructure, has raised $9.6 million in a Pre-A Series A funding round at a valuation of $170 million. The round was led by Amber Group and Fundamental Labs.

The funds from this round of financing will be used to accelerate Bitlight Labs’ core contributions to the RGB protocol, deepen its integration with the Lightning Network, and bring application-level solutions to market, including native Lightning Network payments, wallets, and RGB-based stablecoin channels.

Over twenty investors from the cryptocurrency, stablecoin, traditional finance, and payments sectors participated in this round, including Amber Group, Fundamental Labs, United Overseas Bank, HV Capital, Outliers Fund, Taisu Ventures, Arkstream Capital, Signum Capital, Gate Ventures, and Sidedoor Ventures, as well as unnamed global stablecoin and digital asset firms.

Bitlight Labs stated, "This round of funding allows us to focus on our long-term strategy of seamlessly integrating RGB with the Lightning Network to enable payments in Bitcoin's native stablecoin. We will continue to invest day and night in core code development, interoperability enhancements, and production deployment of RGB and Lightning Network stablecoins to bring everyday settlement solutions to wallet users, merchants, and businesses."

Amber Group commented: "RGB adds a scalable asset layer to Bitcoin without burdening it. Combined with the Lightning Network, it opens a practical path for high-throughput, low-fee stablecoin payments. We believe Bitlight Labs is well-positioned to drive widespread adoption of Lightning Network stablecoin wallets, payment flows, and enterprise integrations."

RGB and Lightning Network: A Native Stablecoin Solution on Bitcoin

RGB is a client-side validation protocol for issuing and trading digital assets on Bitcoin. By keeping contracts and state data off-chain, RGB improves throughput and data processing scale, and is interoperable with Layer 2 solutions. This allows users to hold and transfer assets (such as stablecoins) alongside Bitcoin in the same wallet.

The Lightning Network is Bitcoin's instant, low-fee payment network. Integrating RGB with the Lightning Network provides asset-aware channel operations, routing, and real-time settlement capabilities while minimizing the on-chain footprint and inheriting Bitcoin's security model.

Bitlight Labs' immediate priority is integrating RGB with the Lightning Network, a technical prerequisite for enabling Bitcoin stablecoin payments. The goal is to enable stablecoins to circulate natively on the Lightning Network and provide a wallet user experience comparable to Bitcoin. The company is actively collaborating with multiple stablecoin issuers and payment service providers to support multi-issuer interoperability, liquidity, and settlement processes for merchants.

Market verification and ecological development

Tether, the world’s largest stablecoin issuer, plans to launch USD₮ on the RGB protocol, according to an official announcement .

According to Tether, the introduction of USD₮ into RGB aims to enable fast and lightweight payments on Bitcoin, allowing users to hold and transfer USD₮ alongside BTC in the same wallet, even enabling offline value transfers. This development highlights the strategic importance of RGB and the Lightning Network as payment channels for native Bitcoin stablecoins.

About Bitlight Labs

Bitlight Labs is a Bitcoin and Lightning Network infrastructure company and a major contributor to the RGB protocol, dedicated to enabling native smart contracts and stablecoin transactions on the Bitcoin and Lightning Networks. The company develops the core code, developer tools, and applications for the Lightning Network and RGB protocols, aiming to provide scalable and sovereign asset solutions for the world's most secure decentralized network.

Bitlight Labs is focused on core protocol engineering and reference implementations for RGB interoperability with the Lightning Network, developer SDKs and node infrastructure, wallet and merchant/payment tools integrated with the Lightning Network, and infrastructure for multi-issuer stablecoin interoperability and settlement on Bitcoin using RGB. The company's current focus is on delivering a production-grade Lightning-RGB integration solution to support stablecoin payments for consumer wallets, merchant acceptance, and enterprise settlement.

To explore the RGB protocol and Bitlight Labs' products, please visit their official website and follow their official X account for the latest updates. Bitlight Labs, the Bitcoin RGB protocol and Lightning Network stablecoin payment infrastructure, has completed a $9.6 million Pre-A Series A funding round at a $170 million valuation. This round was led by Amber Group and Fundamental Labs.

The funds from this round of financing will be used to accelerate Bitlight Labs’ core contributions to the RGB protocol, deepen its integration with the Lightning Network, and bring application-level solutions to market, including native Lightning Network payments, wallets, and RGB-based stablecoin channels.

Over twenty investors from the cryptocurrency, stablecoin, traditional finance, and payments sectors participated in this round, including Amber Group, Fundamental Labs, United Overseas Bank, HV Capital, Outliers Fund, Taisu Ventures, Arkstream Capital, Signum Capital, Gate Ventures, and Sidedoor Ventures, as well as unnamed global stablecoin and digital asset firms.

Bitlight Labs stated, "This round of funding allows us to focus on our long-term strategy of seamlessly integrating RGB with the Lightning Network to enable payments in Bitcoin's native stablecoin. We will continue to invest day and night in core code development, interoperability enhancements, and production deployment of RGB and Lightning Network stablecoins to bring everyday settlement solutions to wallet users, merchants, and businesses."

Amber Group commented: "RGB adds a scalable asset layer to Bitcoin without burdening it. Combined with the Lightning Network, it opens a practical path for high-throughput, low-fee stablecoin payments. We believe Bitlight Labs is well-positioned to drive widespread adoption of Lightning Network stablecoin wallets, payment flows, and enterprise integrations."

RGB and Lightning Network: A Native Stablecoin Solution on Bitcoin

RGB is a client-side validation protocol for issuing and trading digital assets on Bitcoin. By keeping contracts and state data off-chain, RGB improves throughput and data processing scale, and is interoperable with Layer 2 solutions. This allows users to hold and transfer assets (such as stablecoins) alongside Bitcoin in the same wallet.

The Lightning Network is Bitcoin's instant, low-fee payment network. Integrating RGB with the Lightning Network provides asset-aware channel operations, routing, and real-time settlement capabilities while minimizing the on-chain footprint and inheriting Bitcoin's security model.

Bitlight Labs' immediate priority is integrating RGB with the Lightning Network, a technical prerequisite for enabling Bitcoin stablecoin payments. The goal is to enable stablecoins to circulate natively on the Lightning Network and provide a wallet user experience comparable to Bitcoin. The company is actively collaborating with multiple stablecoin issuers and payment service providers to support multi-issuer interoperability, liquidity, and settlement processes for merchants.

Market verification and ecological development

Tether, the world’s largest stablecoin issuer, plans to launch USD₮ on the RGB protocol, according to an official announcement .

According to Tether, the introduction of USD₮ into RGB aims to enable fast and lightweight payments on Bitcoin, allowing users to hold and transfer USD₮ alongside BTC in the same wallet, even enabling offline value transfers. This development highlights the strategic importance of RGB and the Lightning Network as payment channels for native Bitcoin stablecoins.

About Bitlight Labs

Bitlight Labs is a Bitcoin and Lightning Network infrastructure company and a major contributor to the RGB protocol, dedicated to enabling native smart contracts and stablecoin transactions on the Bitcoin and Lightning Networks. The company develops the core code, developer tools, and applications for the Lightning Network and RGB protocols, aiming to provide scalable and sovereign asset solutions for the world's most secure decentralized network.

Bitlight Labs is focused on core protocol engineering and reference implementations for RGB interoperability with the Lightning Network, developer SDKs and node infrastructure, wallet and merchant/payment tools integrated with the Lightning Network, and infrastructure for multi-issuer stablecoin interoperability and settlement on Bitcoin using RGB. The company's current focus is on delivering a production-grade Lightning-RGB integration solution to support stablecoin payments for consumer wallets, merchant acceptance, and enterprise settlement.

To explore the RGB protocol and Bitlight Labs' products, please visit their official website and follow their official X account for the latest updates.