Ethena（ENA）代幣經濟學

Ethena’s token economics are multifaceted, involving both its governance token (ENA) and its synthetic stablecoin (USDe). Below is a comprehensive breakdown of the issuance, allocation, usage, incentive, locking, and unlocking mechanisms, with tables and detailed explanations.

Issuance Mechanism

ENA (Governance Token)

• Total Supply: 15 billion ENA.
• Initial Mint: The ENA token was deployed on April 2, 2024. The initial mint counts as the first and only mint until at least April 2, 2025, due to a restriction that allows up to 10% of the total supply to be minted only once every 365 days.
• Control: The project team controls a four-of-eight multi-sig wallet with minting authority, but future mints are strictly limited.

USDe (Synthetic Stablecoin)

• Minting: Users deposit stETH, ETH, BTC, SOL, or other supported assets to mint USDe at a 1:1 USD ratio. Only whitelisted users (who pass KYC/KYB) can mint/redeem directly; others can acquire USDe via liquidity pools.
• Peg Stability: USDe maintains its peg through delta-neutral hedging—when a user deposits stETH, the protocol opens a 1x short ETH perpetual position on a CEX, offsetting price risk.

Allocation Mechanism

ENA Allocation Table

Unlocking Schedule Table

Usage and Incentive Mechanism

ENA

• Governance: ENA is primarily a governance token. Holders can vote on protocol parameters, risk management, collateral composition, exchange/custodian exposure, DEX integrations, cross-chain initiatives, product prioritization, community grants, reserve fund management, and yield distribution.
• Staking (sENA): Users can lock ENA to receive sENA, a liquid receipt token. sENA holders earn rewards, including unclaimed ENA from airdrop distributions and a share of future protocol revenues. sENA is composable in DeFi and earns additional rewards from associated projects (e.g., Ethereal).
• Restaking: ENA can be restaked in partnership with Symbiotic to provide economic security for cross-chain USDe transfers.

USDe

• Stablecoin Utility: USDe is used as a stable, yield-bearing asset. It can be staked to receive sUSDe, which accrues yield from staked ETH and funding rates from short positions.
• Liquidity Incentives: Users are incentivized to provide USDe liquidity on platforms like Curve and Uniswap via campaigns (e.g., Shard and Sats campaigns).
• Points Campaigns: Users earn “shards” or “Sats” by holding, staking, locking, or providing liquidity with USDe. These points are used for airdrop eligibility and other rewards.

Example: Shard Distribution (as of Feb 29, 2024)

Locking Mechanism

• ENA Locking: ENA can be locked to receive sENA, which is liquid and can be used in DeFi. Locking aligns users with long-term protocol growth and provides access to additional rewards.
• USDe Locking: USDe can be locked to earn boosted points (Sats) in campaigns. Staked USDe (sUSDe) can be unstaked with a 7-day unlock period.
• Airdrop Vesting: For the top 2,000 addresses in the Shard Campaign, half of the ENA airdrop is subject to a 6-month linear vesting period.

Unlocking Time

• ENA Unlocks: Core contributors and investors have a 1-year cliff, then 3-year linear monthly vesting. Ecosystem and airdrop allocations have both instant and linear vesting components.
• USDe/sUSDe Unlocks: Unstaking/withdrawing sUSDe or locked USDe requires a 7-day unlock period.
• Airdrop Unlocks: Immediate for most, but top campaign participants have a 6-month linear vesting for half their allocation.

Additional Notes and Implications

• Governance Evolution: While ENA is designed for governance, as of April 2024, the governance process is not fully decentralized; the project team retains significant control via multi-sig wallets.
• Yield Sustainability: USDe’s yield is derived from the ETH carry trade (staking yield + funding rate from shorting ETH). If market inefficiencies close, yields may decrease, impacting incentives.
• Risk Management: Ethena maintains a Reserve Fund to cover periods of negative yield and act as a bidder of last resort for USDe, enhancing stability but introducing centralization and custody risks.
• Composability: Both ENA and USDe are designed to be composable across DeFi, with sENA and sUSDe as liquid, reward-bearing tokens.

Summary Table: ENA Tokenomics

References for Further Reading

• Ethena Tokenomics Documentation
• USDe Overview
• Rewards Mechanism Explanation
• USDe Terms and Conditions

In conclusion: Ethena’s token economics are designed to bootstrap growth through strong incentives, align long-term stakeholders via vesting and locking, and maintain stability through a delta-neutral synthetic dollar mechanism. The system is complex, with evolving governance and risk management, and its long-term sustainability will depend on the protocol’s ability to adapt as market conditions change.