What is ether.fi Staked BTC (EBTC)?

Quick Facts

  • Token: ether.fi Staked BTC (EBTC)
  • Type: Bitcoin-backed liquid restaking token
  • Issuer: ether.fi protocol
  • Accepted deposits: LBTC and WBTC
  • Staking partner: Babylon
  • Restaking partners: EigenLayer, Symbiotic, and Karak
  • Available on: Ethereum, Base, Arbitrum, Optimism, and Berachain
  • Rewards: Auto-compounding, no lockups

Introduction

EBTC is ether.fi's flagship Bitcoin-backed liquid restaking token. It is designed to expand BTC utility within restaking and DeFi while allowing users to maintain full Bitcoin price exposure.

By issuing a single liquid token that represents staked and restaked Bitcoin assets, EBTC simplifies yield optimization for both individual and institutional participants.

History & Background

ether.fi originally launched as a non-custodial Ethereum liquid staking protocol. Building on the success of its ETH product (weETH), the team expanded into Bitcoin by introducing EBTC — the first dual-yielding Bitcoin product of its kind on the market.

The token was developed in collaboration with Lombard, whose LBTC asset serves as the primary collateral backing EBTC, combining native Bitcoin staking through Babylon with Ethereum-based restaking infrastructure.

How ether.fi Staked BTC Works

Users deposit LBTC or WBTC into the ether.fi protocol and receive EBTC in return. This token represents their share of the underlying staked and restaked Bitcoin assets, plus accumulated rewards.

Staking is conducted through Babylon, providing native Bitcoin staking yield. Restaking services are layered on top via a combination of EigenLayer, Symbiotic, and Karak, creating a dual-yield structure from two independent reward sources.

Rewards accrue directly into the holder's EBTC balance over time and auto-compound without any manual action required.

Tokenomics

EBTC is a value-accruing token — its exchange rate against the underlying Bitcoin assets grows as staking and restaking rewards accumulate. There is no separate governance token or inflationary emission tied to EBTC itself.

The token's economic design prioritizes sustainable, real yield derived from protocol fees and staking rewards rather than from token inflation.

Circulating supply ? 263 EBTC
Total supply ? 263 EBTC
Max supply ? -- EBTC
Updated 4d ago

Ecosystem & Use Cases

EBTC is integrated across 400+ DeFi protocols, enabling holders to use their restaked BTC as collateral for lending, liquidity provision, and leveraged strategies.

The token is bridgeable and usable across multiple chains including Ethereum mainnet, Base, Arbitrum, Optimism, and Berachain, making it a flexible building block within the broader DeFi ecosystem.

Team, Governance & Community

ether.fi is decentralized by design, built on Ethereum's infrastructure with full transparency through open-source smart contracts on GitHub. The protocol is audited and monitored by industry-leading security firms, with an active bug bounty program.

The community engages through Discord, Telegram, and Twitter/X, and the broader protocol is governed with an emphasis on decentralization and non-custodial principles.

Advantages

  • Dual yield: Earns from both Bitcoin staking (Babylon) and restaking (EigenLayer, Symbiotic, Karak) simultaneously.
  • Non-custodial: Users retain control of their assets at all times.
  • Auto-compounding: Rewards are automatically reinvested without manual intervention.
  • Multi-chain: Usable across Ethereum, Base, Arbitrum, Optimism, and Berachain.
  • DeFi composability: Accepted as collateral across 400+ integrated protocols.

Risks & Challenges

  • Smart contract risk: Bugs or exploits in ether.fi's contracts, or in partner protocols, could result in loss of funds.
  • Restaking complexity: Layered restaking across multiple platforms introduces compounded slashing and counterparty risks.
  • Withdrawal friction: In-app withdrawals are not directly supported; users must transfer EBTC externally to unstake.
  • Yield variability: APY is variable and not guaranteed, depending on network conditions and protocol performance.
  • Liquidity risk: As a relatively new token, on-chain liquidity may be limited compared to more established assets.

Long-Term Vision

ether.fi aims to position EBTC as the standard liquid restaking primitive for Bitcoin across DeFi. By deepening integrations with more restaking networks and DeFi protocols, the goal is to unlock Bitcoin's latent capital efficiency without sacrificing security or self-custody principles.

As the BTCfi ecosystem matures, EBTC is designed to serve as a cornerstone asset — bridging Bitcoin's store-of-value properties with the composable yield infrastructure of Ethereum-based DeFi.

Frequently Asked Questions

EBTC is ether.fi's Bitcoin-backed liquid restaking token. It lets users deposit BTC-backed assets and earn dual yield from both staking and restaking without giving up Bitcoin price exposure.

Users can deposit LBTC (Lombard's liquid Bitcoin token) or WBTC into the ether.fi protocol. In return, they receive EBTC representing their share of the staked and restaked pool.

EBTC earns yield from two sources simultaneously: native Bitcoin staking via Babylon and restaking through EigenLayer, Symbiotic, and Karak. This layered approach maximizes returns from a single deposited asset.

Yes. ether.fi is designed to be non-custodial, meaning users retain control over their assets. The protocol uses audited smart contracts rather than relying on a central custodian.

EBTC is available on Ethereum mainnet, Base, Arbitrum, Optimism, and Berachain. It can be bridged across these networks while maintaining the same underlying value.

Rewards accrue directly into the holder's EBTC balance over time and auto-compound automatically. There is no need to manually claim or reinvest earnings.

Key risks include smart contract vulnerabilities, slashing risk from layered restaking protocols, variable APY, and limited in-app withdrawal options. Users should review audits and understand restaking mechanics before depositing.

EBTC is integrated with over 400 DeFi protocols and can be used as collateral for lending, liquidity provision, or leveraged strategies. It can be traded on decentralized exchanges such as Curve, Uniswap, and Fluid on Ethereum.