Oakland, United States, January 28th, 2026, Chainwire
Bitcoin is not a niche asset anymore. It is a multi-trillion-dollar holder base with limited ways to use BTC without handing control to someone else. That constraint has shaped the entire market: Bitcoin is held, but if productive activity even happens at all, it happens under various trust assumptions. A Bitcoin-native zkRollup changes that by giving BTC a path to be used and to earn yield while keeping final enforcement on Bitcoin.
Unlike Ethereum, Bitcoin’s base layer is intentionally minimal and does not provide a flexible environment for verifying complex proofs, which is why “Bitcoin-native Rollups” were widely treated as impractical. Most systems marketed as “Bitcoin L2s” still fail where it matters: when something goes wrong, Bitcoin itself cannot force the correct outcome. If a withdrawal depends on operator signatures, committee cooperation, or majority liveness, then the user does not have control of their BTC. GOAT Network is designed around a stricter requirement: users must be able to exit back to Bitcoin under Bitcoin’s rules - without permission.
“The Bitcoin Layer 2 market hasn’t truly started. Until now, the so-called ‘Bitcoin L2s’ are simply sidechains or custodial bridges. They lack essential attributes like permissionless exit or mainnet-level dispute resolution, which are requirements for BTCFi to be credible.” - Kevin Liu, CEO of GOAT Network
The Right Way To Scale Bitcoin
GOAT BitVM2 builds on the BitVM2 approach, taking it beyond theory and using Bitcoin’s existing primitives - pre-transactions, one-time signatures, and time locks - to create a practical enforcement mechanism where false claims can be challenged and driven to a Bitcoin-enforced resolution.
Building on previous Testnets, which validated the BitVM2 model within a Type-1 zkEVM running environment with real-time proving, Testnet V3 is a public environment for GOAT Network’s full Bitcoin-native zkRollup stack, introducing GOAT BitVM2 in production for the first time. Execution happens off-chain, validity is proven with ZK, and Bitcoin is the enforcement layer for disputes and exits. The testnet focuses on making the dispute system operational, integrating the end-to-end pieces required for a deployable system.
To do that, the system anchors sequencer authority and ordering to Bitcoin (via a decentralized sequencer) and binds withdrawals to that Bitcoin-anchored history, preventing withdrawals based on an alternate or fabricated transaction history. It supports arbitrary-amount withdrawals designed to complete without fragile user-side processes and will soon introduce a dispute construction engineered to reduce worst-case work that must land on Bitcoin, using a garbled-circuit-based approach paired with a designated-verifier SNARK - keeping enforcement economically executable.
The broader stack includes an Ethereum-equivalent execution environment (Type-1 zkEVM), a decentralized sequencer architecture designed for network sharing with sustainable yield economics, and ZK proving driven by Ziren, GOAT Network’s own audited zkVM proving engine.
Availability & Links
The GOAT BitVM2 Testnet is live and open for public testing.
About GOAT Network
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