What is SatLayer (SLAY)?

Quick Facts

  • Token symbol: SLAY (ERC-20 on Ethereum)
  • Core function: Bitcoin restaking and programmable economic layer
  • Built on: Babylon Bitcoin Staking protocol
  • Key mechanism: Bitcoin Validated Services (BVS)
  • Use cases: DeFi, RWA, stablecoins, AI infrastructure
  • Governance: SLAY token holders vote on protocol decisions
  • Yield sources: BTC staking, LSTs, BVS rewards, SLAY incentives

Introduction

SatLayer is a protocol that transforms Bitcoin from a passive store of value into an active, programmable economic layer. By enabling Bitcoin restaking, it allows BTC holders to put their assets to work — securing decentralized applications and earning yield — without giving up custody.

The native token, SLAY, powers governance, incentivizes participation, and underpins security across the ecosystem.

History & Background

SatLayer was developed to address a key limitation: despite being the most secure and liquid crypto asset, Bitcoin has historically played little role in DeFi. The team built SatLayer on top of the Babylon protocol, which first enabled native BTC staking via a proof-of-stake sidechain. SatLayer extends Babylon's capabilities to create a fully programmable Bitcoin economic layer.

How SatLayer Works

At the core of SatLayer is the BVS (Bitcoin Validated Services) model. Users deposit BTC or Bitcoin liquid staking tokens (LSTs) into SatLayer vaults on Babylon. In return, they receive representative tokens (such as vBTC) and earn rewards by securing BVS applications.

BVS operators run the services — ranging from decentralized insurance to cross-chain bridges — and are held accountable through programmable slashing rules. If an operator misbehaves, staked assets can be penalized according to each BVS's own defined conditions.

The protocol's permissionless design lets node operators choose which BVS applications to validate, creating a competitive and market-driven security environment.

Tokenomics

SLAY is the central economic and governance token of the SatLayer ecosystem. It serves multiple functions: rewarding restakers and BVS participants, aligning incentives between operators and developers, and empowering the community to vote on protocol decisions.

The token allocation is designed to balance early community engagement with long-term ecosystem growth, with the largest share dedicated to ecosystem incentives and smaller portions reserved for early backers, contributors, and the SatLayer Foundation.

Circulating supply ? 672.00 million SLAY
Total supply ? 2.10 billion SLAY
Max supply ? 2.10 billion SLAY
Updated 2h ago

Ecosystem & Use Cases

SatLayer enables BTC to function as collateral across a wide range of use cases:

  • DeFi lending and liquidity — vBTC can be used in lending protocols and liquidity pools
  • Real-world assets (RWA) — short-term bonds and institutional instruments backed by BTC
  • Stablecoins — Bitcoin-collateralized stablecoins such as USBD
  • AI infrastructure — Bitcoin-secured compute and data services
  • Cross-chain bridges — extending Bitcoin's security across multiple networks

Team, Governance & Community

The SatLayer Foundation supports R&D, marketing, and protocol operations. Governance rights are progressively extended to SLAY token holders, who can vote on fee distribution, BVS project funding, and broader protocol upgrades. The ecosystem is supported by a developer SDK, hackathon programs, and partnerships with custodians and institutional partners.

Advantages

  • Real yield: Protocol fees from active BVS services provide sustainable, non-inflationary rewards
  • Bitcoin security: Applications inherit the trust and finality of the Bitcoin network
  • Multiple reward streams: Stakers can earn from BTC staking, LSTs, BVS fees, and SLAY incentives simultaneously
  • Programmable slashing: Custom rules for each BVS ensure accountability and honest behavior
  • Multi-chain reach: vBTC bridging enables use across Ethereum, BNB Chain, Polygon, and more

Risks & Challenges

  • Smart contract risk: Bugs or exploits in BVS contracts could put staked assets at risk
  • Slashing risk: Users who violate BVS security standards or exit early may lose a portion of their stake
  • Adoption uncertainty: The BVS model depends on attracting high-quality services and active operators
  • Centralization concerns: Early-stage token controls, including minting and freezing powers, present governance risks
  • Dependency on Babylon: Protocol security and functionality are closely tied to the Babylon ecosystem's development

Long-Term Vision

SatLayer aims to establish Bitcoin as the foundational collateral layer for the global decentralized economy. The roadmap targets institutional custody integration, Bitcoin-backed stablecoins, and deeper DeFi and TradFi integrations — positioning BTC not just as digital gold, but as the engine powering a new programmable financial system.

Frequently Asked Questions

SatLayer is a Bitcoin restaking protocol that enables BTC holders to secure decentralized applications and earn yield. It is built on the Babylon protocol and introduces Bitcoin Validated Services (BVS) as its core mechanism.

SLAY is the native token of the SatLayer ecosystem, used for governance voting, staking rewards, and incentivizing participation in BVS services. Holders can influence protocol decisions such as fee distribution and ecosystem grants.

BVS are decentralized applications — such as lending protocols, cross-chain bridges, and AI infrastructure — that use restaked Bitcoin as their security backing. Each BVS defines its own slashing rules to ensure honest operator behavior.

Users deposit BTC or Bitcoin LSTs into SatLayer vaults and receive representative tokens like vBTC. They earn rewards from multiple sources including BTC staking yields, BVS service fees, and SLAY token incentives.

SatLayer is built directly on top of the Babylon protocol, which enables native BTC staking without moving Bitcoin off its chain. SatLayer extends Babylon's capabilities with programmable smart contracts and the BVS framework.

SLAY is an ERC-20 token on Ethereum, and SatLayer is integrating cross-chain bridges to extend vBTC across BNB Chain, Polygon, and other networks. The protocol's security layer is anchored to Bitcoin via Babylon.

vBTC is the representative token minted when users deposit BTC or LSTs into SatLayer vaults. It can be used across DeFi protocols for lending, liquidity provision, and as collateral.

Key risks include smart contract vulnerabilities in BVS applications, slashing penalties for early withdrawal or rule violations, and the protocol's dependence on continued growth of the Babylon ecosystem.