Ethena（ENA）代幣經濟學

Ethena (ENA) is the governance token for the Ethena protocol, a decentralized synthetic dollar protocol built on Ethereum. The protocol's primary product is USDe, a stablecoin backed by delta-hedged Ethereum and Bitcoin collateral. The ENA token was launched on April 2, 2024, to facilitate the transition toward a decentralized governance model.

Issuance Mechanism

The ENA token is an ERC-20 token on the Ethereum network with a total supply of 15,000,000,000 tokens. The issuance follows a dynamic mechanism:

• Initial Minting: The initial supply was minted upon the token's deployment.
• Inflation Control: The protocol includes a "mint" function that allows the contract owner (currently a four-of-eight multi-sig controlled by the project team) to mint additional tokens.
• Restrictions: New minting is restricted by a MAX_INFLATION variable, currently capped at 10% of the total supply. Furthermore, a MINT_WAIT_PERIOD ensures that this function can only be called once every 365 days. Based on the initial mint date, no additional tokens can be minted until at least April 2, 2025.

Allocation Mechanism

The total supply of 15 billion ENA is distributed across five primary categories to align the interests of investors, core contributors, and the broader ecosystem.

Usage and Incentive Mechanism

The ENA token is primarily designed for governance, while the protocol uses a points-based system (Shards and Sats) to incentivize liquidity and growth.

• Governance: ENA holders can vote on critical protocol parameters, including risk management frameworks, USDe collateral composition, exchange and custodian exposure, and the distribution of yield between sUSDe holders and the Reserve Fund.
• Staking (sENA): Users can lock ENA to receive sENA, a liquid receipt token. sENA holders are eligible for rewards, such as unclaimed ENA from previous airdrop seasons and potential future token supplies from partner protocols like Ethereal (15% of supply) and Derive (5% of supply).
• Points Campaigns:
  • Season 1 (Shard Campaign): Concluded on April 1, 2024, resulting in an airdrop of 750 million ENA (5% of supply) to participants.
  • Season 2 (Sats Campaign): Launched on April 2, 2024, to incentivize holding, locking, and providing liquidity for USDe across various DeFi protocols like Curve, Uniswap, and Pendle.
• Restaking: Through a partnership with Symbiotic, ENA can be restaked to provide economic security for cross-chain USDe transfers.

Locking and Unlocking Mechanism

Ethena employs a structured vesting schedule to ensure long-term commitment from core stakeholders and to mitigate market supply shocks.

• Core Contributors and Investors: Both groups are subject to a one-year cliff, during which no tokens are unlocked. Following the cliff, tokens vest linearly on a monthly basis over the subsequent three years.
• Airdrop Vesting: For the initial Shard Campaign, wallet addresses in the top 2,000 of the leaderboard were subject to a six-month linear vesting period for 50% of their airdropped ENA.
• USDe/sUSDe Unlocking: While not ENA tokens, the protocol's stablecoin components have a seven-day cooldown period for unstaking sUSDe or unlocking USDe.

Unlocking Schedule

The protocol has a significant unlock event scheduled for March 2025, marking the end of the one-year cliff for major stakeholders.

Following the major March 2025 event, the protocol will continue to unlock approximately 332.9 million tokens monthly through early 2028 as part of the linear vesting for team and investors.