Lido Finance was founded in 2020 by Konstantin Lomashuk, Vasiliy Shapovalov (Russian developers), and Jordan Fish (known as “Cobie,” crypto analyst), with technical leadership from the team that would become the Lido DAO. The whitepaper/documentation describes a liquid staking protocol for Ethereum that accepts user ETH, stakes it across a curated set of professional validators, and returns stETH — an ERC-20 token that automatically accrues validator rewards.

Lido became the dominant liquid staking protocol and grew to control approximately 30% of all staked ETH — a position that sparked significant debate about centralization risks to Ethereum’s consensus.

> PDF hosting: Lido’s documentation is at docs.lido.fi. The investor-facing paper is at lido.fi/static/Lido:Ethereum-Liquid-Staking.pdf.

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Publication and Context

When Ethereum’s Beacon Chain launched in December 2020, validators needed to:

1. Deposit exactly 32 ETH — no more, no less
2. Run validator software continuously (uptime risk)
3. Wait for an undetermined time to withdraw (withdrawals were not enabled until April 2023)

This created a liquidity problem: 32 ETH locked for potentially years with no way to access it.

Lido solved this with a simple concept: pool user ETH → run validators → issue liquid receipt tokens.

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Core Design: stETH

How stETH works:

1. User deposits any amount of ETH (minimum 0 ETH, unlike the 32 ETH validator requirement)
2. Lido’s smart contracts aggregate deposits and delegate to whitelisted node operators (professional staking companies: P2P.org, Chorus One, Figment, etc.)
3. User receives stETH at 1:1 (1 ETH deposited = 1 stETH received)
4. Node operators stake the ETH on the Beacon Chain and earn validator rewards
5. Lido distributes rewards by rebasing stETH balances daily: everyone’s stETH balance grows proportionally to reflect earned yield

Rebasing: If Ethereum validators earn 4% APY:

• 1 stETH today → 1.04 stETH in one year (balance grows in the holder’s wallet automatically)
• No explicit claim-and-compound needed
• The stETH/ETH exchange rate is always approximately 1:1 (with minor deviation from MEV, penalties, etc.)

wstETH (Wrapped stETH):

Rebasing tokens cause problems in some DeFi contexts (protocols expecting non-rebasing ERC-20s). wstETH is a non-rebasing wrapper:

• wstETH balance stays fixed while its ETH redemption value grows
• Standard ERC-20 compatible; used in Aave, Maker, Curve, etc.

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Node Operator Set

Lido does not permissionlessly accept validators. Node operators are curated by the Lido DAO:

• Who qualifies: Professional staking companies with strong SLAs, security practices, and geographic distribution
• How it works: DAO approves new node operators through governance votes
• Responsibility: Operators are responsible for uptime; slashing penalties are covered by Lido’s insurance fund (part of protocol revenue)

The curated set addresses one concern (validator quality) while creating another (centralization of validator curation in Lido governance).

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Fee Structure

Lido takes a 10% fee on all staking rewards:

• 5% to node operators (for their infrastructure and operational costs)
• 5% to the Lido Insurance Fund and DAO treasury

The remaining 90% of rewards flow to stETH holders.

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LDO Token

LDO is Lido’s governance token. LDO holders vote on:

• Node operator additions/removals
• Protocol fee parameters
• Treasury allocation
• Upgrade proposals

LDO has no fee capture mechanism — it is a pure governance token. LDO distribution included significant allocations to founders, investors (Paradigm, a16z, Dragonfly), and the DAO treasury.

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The 33% Centralization Problem

The most serious concern about Lido: if Lido controls more than 33% of all staked ETH, it gains the theoretical ability to disrupt Ethereum finality:

• Casper FFG requires >1/3 of stake to prevent finality (a “liveness failure”)
• If Lido coordinates, it could prevent Ethereum from finalizing blocks

Counter-arguments:

• Lido is governed by a DAO, not a single entity
• Node operators are diverse and independent
• Lido governance includes technical fail-safes

Pro-decentralization arguments:

• Ethereum validators should be distributed widely
• 30%+ in a single governance system violates the spirit of decentralized consensus
• The Ethereum Foundation has publicly stated concern about Lido’s dominance

As of 2024, the debate is unresolved; Lido maintains ~30% dominance despite community pressure.

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Reality Check

Lido has operated successfully without a major hack since 2020 — a major security achievement. Its stETH depegged briefly during the June 2022 liquidity crisis (stETH fell to ~0.94 ETH when 3AC and Celsius forced sales) before recovering after withdrawals were enabled in April 2023.

The April 2023 withdrawal activation was a significant milestone: for the first time, users could convert stETH → ETH directly through Lido’s withdrawal system, reducing the systemic depegging risk.

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Legacy

Lido created the liquid staking category and made ETH staking accessible to users without technical expertise or 32 ETH minimums. LSTs (Liquid Staking Tokens) became a cornerstone of DeFi collateral infrastructure. Competitors (Rocket Pool, Frax ETH, Ankr, StakeWise) exist but Lido maintains dominant market share. The stETH integration into Aave, Curve, and Maker made it one of the most used DeFi assets by TVL.

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Related Terms

• Liquid Staking
• stETH
• Proof of Stake
• EigenLayer Whitepaper
• Ethereum Beacon Chain Whitepaper

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Research

• Lido Finance. (2020). Lido: Ethereum Liquid Staking. lido.fi.

— Primary source. The stETH rebasing mechanism and node operator model are the central design elements.

• Chitra, T., & Evans, A. (2022). Risks of Liquid Staking Derivatives. arXiv:2205.16729.

— Formal treatment of LST systemic risks: depegging, validator centralization, and rehypothecation.

• Yang, K., et al. (2023). SoK: Liquid Staking. arXiv:2306.00044.

— Systematic overview of the liquid staking protocol category; compares Lido, Rocket Pool, Frax ETH, and others.