Bitcoin’s lack of programmability, native yield, and trust-minimized infrastructure has limited Bitcoin Finance; Botanix addresses this with a Bitcoin-secured EVM and yield-bearing stBTC, targeting the ~$2 trillion trillion in largely idle Bitcoin capital that remains underutilized in DeFi.
stBTC earns native BTC yield from real gas fees, where 50% of all Bitcoin-denominated fees are redistributed to stakers, tying rewards directly to network usage.
stBTC’s TVL has grown 23.3% since launch, rising from ~$4.6 million on Sept. 5 to over $5.7 million by Sept. 26, signaling early user demand for Bitcoin-native staking yield.
Botanix is currently secured by a 16-member Proof-of-Authority (PoA) federation, where validators control block production and Bitcoin custody via a 12-of-16 multisig. The network plans to evolve toward the Spiderchain architecture, which is a permissionless Proof-of-Stake model with randomized validator selection and broader geographic distribution.
Botanix’s ecosystem offers various DeFi applications, including lending and DEXs. Notable apps include GMX, Dolomite, Bitzy, and Arch.
Primer
Botanix is a Bitcoin Layer-2 (L2) built to unlock Bitcoin-native finance through a programmable EVM environment, decentralized validator set, and yield-bearing BTC assets. Launched in 2023, Botanix leverages the Spiderchain, a rotating multisig and PoS-based architecture secured by BTC, to allow Bitcoin holders to participate in DeFi without leaving the Bitcoin security model. The network uses Bitcoin as its native gas asset, redistributing a portion of transaction fees back to users through stBTC, a liquid staking token backed by network activity. Botanix supports smart contracts, composable DeFi applications, and cross-chain deployments, allowing builders to develop within the Ethereum tooling stack while settling back to Bitcoin. The project was co-founded by Willem Schroe and Alisia Painter and has raised capital across (i) a Pre-Seed round led by UTXO Management and (ii) an $8.5 million Seed round in September 2024 led by Polychain Capital and Placeholder.
“Bitcoin Finance” (BTCFi) refers to bringing decentralized, non-custodial financial use cases (i.e., trading, lending, and staking) to the Bitcoin ecosystem. It allows tokenholders to earn real yield, post collateral, and engage in DeFi directly. While Bitcoin may be the largest cryptocurrency by market cap, its productivity in DeFi remains minimal.
As of Aug. 31, 2025, only 0.4% of Bitcoin’s market cap is active on Bitcoin-native layers, while 1.81% (over 365k BTC) had migrated to external networks (e.g., Ethereum, Tron, and BNB) as wrapped tokens like WBTC. To put this into perspective, 28.9% of Ethereum’s market cap is actively used in DeFi.
The current barriers holding BTCFi back include:
Minimal Programmability: Bitcoin’s limited scripting language restricts smart contracts and applications, forcing users offchain or to L2s for nuanced transactions.
Lack of Non-Custodial Support: Bitcoin launched in 2008 as a trustless alternative to TradFi, but custodial options have undermined its core ethos. Current DeFi apps suffer from counterparty and smart contract risk.
Unsustainable Yield: Bitcoin offers no native yield mechanism; centralized apps carry higher risk, and onchain options are limited by its lack of programmability.
This highlights a significant Total Addressable Market (TAM) where hundreds of billions of dollars in dormant BTC could be put to productive use with the right infrastructure. Even activating a small share of Bitcoin’s $1.2 trillion market cap would have an outsized impact. Future catalysts (e.g., rising BTC adoption, improved L2 infrastructure, and/or protocol upgrades such as OP_CAT) could unlock meaningful participation and turn Bitcoin from a passive store of value into a base layer for decentralized finance.
Introduction to stBTC
stBTC is a yield-bearing Bitcoin token native to Botanix, an EVM-compatible Bitcoin Layer-2 that allows users to bridge BTC 1:1 and interact with smart contracts. Launched publicly on Sept. 17, 2025, stBTC represents a user’s staked BTC and accrues yield directly from onchain transaction fees, paid entirely in Bitcoin, with no lockups or bonding periods. It is a non-rebasing token, meaning its supply remains constant while its value increases relative to BTC as rewards accrue. Over time, each stBTC token becomes worth more than 1 BTC, making it composable across DeFi protocols while preserving exposure to the underlying Bitcoin and its growing yield. Botanix secures this system through a two-way peg implemented via the Spiderchain, which maintains a strict 1:1 backing while enabling fast finality, transparent accounting, and a meaningful blend of Bitcoin’s base-layer security with EVM programmability.
Validator Federation
Underpinning this architecture is a federated validator set operating on a Proof-of-Authority (PoA) model. Botanix currently relies on a 16-member federation composed of well-known entities such as Galaxy Digital, Fireblocks, Alchemy, and Antpool, who are responsible for block production, bridge operations, and BTC custody. Each validator has equal rights in the system, and Bitcoin custody is managed via a 12-of-16 multisig threshold, ensuring no single party can act unilaterally. PoA was chosen for early-stage efficiency and accountability, offering fast block times (approximately five seconds), finality (no forks), and low gas fees (<$0.01 per transaction).
Although not yet live, validators will eventually have to stake BTC, aligning incentives economically. Misbehavior (i.e., bridge compromise or consensus violations) will result in slashing. Other plans include transitioning from the current application-required federation to a fully permissionless model with hundreds of validators over time.
Several enhancements are being researched and developed to support such evolution: (i) higher-frequency multisig rotation, increasing deposit isolation and reducing the risk of long-term validator collusion; and (ii) validator selection via Verifiable Random Functions (VRF), ensuring unpredictable and fair signer assignment each Bitcoin block. These upgrades will collectively push Botanix closer to becoming a trust-minimized, scalable, and self-governing Bitcoin Layer-2.
Spiderchain Architecture
Botanix’s current architecture operates as a federated sidechain secured by a 16-member Proof-of-Authority (PoA) validator set. These validators (e.g., Galaxy Digital, Fireblocks, and Alchemy) govern the network and collectively manage Bitcoin custody through a 12-of-16 multisig scheme. This means any withdrawal from the system requires at least 12 validators to sign, distributing custody responsibility and preventing unilateral control. Botanix itself only runs one of the 16 validator nodes and has fully removed itself from operational duties, with governance and custody now controlled by the federation.
When a user bridges Bitcoin into Botanix, the BTC is locked in a multisig vault on the Bitcoin Layer-1. After ~18 block confirmations (about three hours), an equivalent amount of synthetic BTC is minted on the Botanix Layer-2. Peg-outs happen in the opposite direction, where users burn their synthetic BTC and receive native BTC back on the L1, with no bonding delays. To preserve transparency and finality, Botanix inscribes its Layer-2 EVM Merkle root directly onto the Bitcoin blockchain every block, anchoring its state to Bitcoin’s base layer and providing cryptographic guarantees of settlement.
However, this federated model is only the first stage in a broader roadmap. Botanix ultimately aims to transition to the Spiderchain. The Spiderchain replaces the static multisig model with a network of rotating multisig vaults. Every Bitcoin block, a new multisig is deterministically created using Verifiable Random Functions (VRFs) to select a random subset of orchestrators, ensuring unpredictable and fair assignment of signers. Each deposit is then assigned to a specific vault, reducing correlation risk and increasing custody isolation. This design enables forward security, meaning even if future validator sets are compromised, past deposits remain cryptographically protected. As the network evolves, future Spiderchain enhancements will include more frequent multisig rotation, more advanced randomness, and full permissionless validator participation via open BTC staking.
Yield Through Gas Fees
Bridging security alone does not create a viable financial layer. A core challenge in BTCFi has been yield. Most Bitcoin-based returns today are synthetic, unsustainable, or reliant on external token rewards. From centralized lending desks offering opaque yields to wrapped BTC earning governance token incentives on Ethereum, few models generate yield from actual Bitcoin-denominated activity. Botanix takes a different approach by using Bitcoin as the native gas token and redistributing network fees directly to stakers.
Specifically, 50% of all BTC gas fees are redistributed to stBTC holders, while the remaining 50% is shared between the Labs entity and the federation. This approach allows stakers to earn directly from usage, not speculation.
Notably, fees are generated from three core interactions with the Botanix EVM: standard Layer-2 transactions (e.g., trades and contract calls), Bitcoin mainnet deposits (Layer-1 to Layer-2 bridge-ins), and withdrawals back to Bitcoin (Layer-2 to Layer-1 bridge-outs).
During stBTC’s launch week, Botanix averaged 36,501 daily transactions and 1,978 average daily active addresses. In the initial days following launch, stBTC yields spiked as high as 34% APY, driven by limited supply and heightened activity. Since then, returns have tapered to a more sustainable 6–7% range, comparable to Ethereum staking yields, but paid entirely in native Bitcoin rather than through inflationary token rewards.
Botanix Ecosystem
To further this growth in active addresses and transaction volume, Botanix launched with a suite of DeFi primitives designed to drive real economic activity from day one. A few notable projects have selected Botanix as the first Bitcoin Layer-2 to launch on, including:
GMX: A flagship protocol for decentralized spot and perpetual trading, ported from Ethereum to Botanix for Bitcoin-native leverage and derivatives trading – with Botanix being exclusively selected as its Bitcoin L2 deployment.
Dolomite: A lending and margin trading platform that lets users borrow or lend against their assets without centralized intermediaries – with Botanix being exclusively selected as its Bitcoin L2 deployment.
Aave: A liquidity management protocol allowing users to borrow/lend crypto assets on supported networks, like Ethereum, Avalanche, and Arbitrum. While not yet deployed, Botanix is the first Bitcoin scaling solution to pass Aave’s governance vote.
By offering these primitives natively on a Bitcoin-secured L2, Botanix transforms itself from a simple execution layer into an end-to-end Bitcoin liquidity hub. Additionally, because stBTC is a liquid token, it can be deployed across DeFi protocols while continuously accruing BTC-denominated yield. For example, a user could (i) stake BTC in return for stBTC (earns base yield from Botanix gas fees), then (ii) supply stBTC on Dolomite to earn lending interest, and (iii) provide stBTC as AMM liquidity to collect trading fees.
Closing Summary
Bitcoin remains largely underutilized in decentralized finance (DeFi). Key structural limitations (e.g., minimal programmability, the absence of native yield, and the reliance on custodial bridges) have kept most BTC dormant. Wrapped BTC variants like WBTC have enabled DeFi participation but introduce centralized custodians and offchain trust dependencies. Native solutions, such as sidechains and federated bridges, often struggle with either limited functionality or opaque security tradeoffs. As a result, Bitcoin's DeFi footprint remains small relative to its market cap.
Botanix addresses these constraints with a two-pronged design: (i) EVM programmability via an Ethereum-compatible Layer-2 and (ii) a trust-minimized bridge secured by the Spiderchain, a rotating, federated Bitcoin multisig. stBTC, the network’s native staking asset, offers BTC-denominated yield sourced directly from gas fees, avoiding speculative emissions or governance token subsidies. This design keeps economic activity and rewards denominated in Bitcoin, aligning with long-term holder incentives. While early-stage limitations remain (i.e., reliance on a known validator federation and incomplete decentralization), Botanix outlines a roadmap toward open participation via Proof-of-Stake and randomized signer rotation.
The result is a system where Bitcoin can be deployed productively (i.e., through lending, trading, or staking) without entirely leaving the Bitcoin security model. If Botanix's model scales securely, it could present a credible path forward for BTCFi, repurposing Bitcoin from passive collateral into a base asset for non-custodial financial activity.
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