Ark Labs launches Arkade public beta, introducing a new native Layer 2 built directly on Bitcoin

After two years of development, Ark Labs, backed by investors including Draper Associates, Axiom, and Fulgur Ventures, has launched Arkade in public beta — introducing what it describes as Bitcoin’s most advanced native Layer 2 since the Lightning Network’s debut nearly a decade ago.

Built on the Ark Protocol specification, originally proposed in 2023, Arkade’s launch delivers the first mainnet implementation of that vision. It virtualizes Bitcoin’s transaction layer through Virtual Transaction Outputs (VTXOs) — offchain representations of Bitcoin’s native Unspent Transaction Outputs (UTXOs). Importantly, Arkade achieves this without requiring a change to Bitcoin’s consensus rules, operating entirely within its existing security framework.

In Bitcoin, coins aren’t stored in accounts but as UTXOs — individual amounts of bitcoin created by previous transactions. Each UTXO is fully spent when used, with any remaining value returned as new outputs, forming the basis of how ownership is recorded and moves across the network.

By virtualizing these outputs offchain, Arkade allows users to move, lend, or trade assets instantly while leveraging Bitcoin’s security model and the ability to unilaterally exit onchain. Each VTXO represents a user’s offchain claim derived from an onchain UTXO, coordinated through Ark Service Providers (ASPs). Analogous to Lightning Service Providers — which help users route payments on the Lightning Network — ASPs coordinate the creation and settlement of thousands of offchain transactions by batching them into periodic single Bitcoin transactions onchain, dramatically reducing costs. Crucially, ASPs never take custody of user funds — every VTXO is backed by a presigned Bitcoin transaction — ensuring users retain custody and can unilaterally reclaim their assets onchain at any time, even if an ASP goes offline or acts maliciously.

While Bitcoin has seen a wave of projects branded as “Layer 2s” in recent years, most operate as sidechains or bridge systems that custody bitcoin through multisig arrangements or issue wrapped versions of BTC on external blockchains, often EVM-compatible networks with their own tokens and governance, and others remain in research and development. Like the Lightning Network, Arkade differs by remaining native to Bitcoin’s security model, extending its capabilities beyond payments to broader financial applications without introducing new trust assumptions or custodial and bridge risks.

“The Bitcoin L2 landscape has been full of promises but light on shipping,” Ark Labs CEO Marco Argentieri said in a statement shared with The Block. “Today’s release marks the beginning of Bitcoin’s evolution as programmable money.”

Ark Labs argues that while Bitcoin’s $2 trillion market cap underscores its role as digital gold, base-layer limits have kept its financial potential largely untapped, leaving room for other blockchains like Ethereum to dominate application development.

“Arkade unlocks Bitcoin’s full potential without compromising what makes it valuable,” Argentieri added. “By virtualizing Bitcoin’s transaction layer, we’re enabling developers to build directly on Bitcoin, not around it.”

Not simply a Lightning Network alternative

Originally introduced as an alternative to the Lightning Network, Ark’s architecture has evolved into something broader than a payment system. While both aim to scale Bitcoin through offchain transactions secured by the main chain, Arkade’s virtualization model supports more complex financial operations such as lending, trading, and asset issuance.

Rather than replacing Lightning, Arkade complements it — the two are interoperable through integrations like Boltz, allowing liquidity to move seamlessly between Lightning channels and Arkade’s offchain environment, broadening the potential use cases. Other launch partners include Breez, BlueWallet, BTCPayServer, and exchanges such as BullBitcoin.

“We realized we weren’t just building another payment rail,” Ark Labs Ecosystem Lead Alex Bergeron explained. “Arkade supports lending protocols, trading platforms, and smart wallets directly on Bitcoin. These are applications that were previously impossible without wrapped tokens or custodial compromises.”

The public beta marks the start of a broader rollout for Arkade, with Ark Labs planning to add enhanced scripting tools, additional security features, and support for more advanced financial applications in the months ahead.

“We’re not just launching a product. We’re establishing infrastructure for the next decade of Bitcoin development,” Bergeron said. “Every major financial application needs a programmable foundation. That’s what we’re building.”

Bringing stablecoins back to Bitcoin with Arkade Assets

Alongside the mainnet launch, Ark Labs also introduced Arkade Assets on Tuesday, a new framework extending Arkade’s virtualization model to support multiple asset types — including stablecoins and other tokens.

Stablecoins now form core infrastructure for digital finance, with more than $200 billion in circulation, but most activity has shifted to other blockchains because of Bitcoin’s limited programmability, the firm argued. Similar in purpose to Lightning Labs’ Taproot Assets protocol, Arkade Assets aims to re-establish Bitcoin as a primary home for stablecoin infrastructure, with Tether USDT support in the pipeline.

“Tether pioneered stablecoins on Bitcoin over a decade ago, but the ecosystem lacked the infrastructure to support the sophisticated applications users demand,” Argentieri said. “Arkade finally provides that foundation. We’re building the rails to bring stablecoins back to the world’s most secure blockchain, where they belong.”

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