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 issues USDe, a stablecoin backed by delta-hedged crypto collateral. The token economics of ENA are designed to facilitate the transition toward protocol decentralization and align the interests of core contributors, investors, and the broader ecosystem.

Issuance Mechanism

ENA is an ERC-20 token on the Ethereum network, launched on April 2, 2024. The issuance is governed by a dynamic mechanism with the following parameters:

• Total Supply: 15,000,000,000 ENA.
• Inflation Control: The protocol includes a "mint" function that allows the contract owner to issue additional tokens. However, this is strictly limited by a MAX_INFLATION variable, currently capped at 10% of the total supply.
• Minting Frequency: A MINT_WAIT_PERIOD variable restricts the calling of the mint function to once every 365 days. The initial minting at launch counted as a call, meaning no new tokens can be minted until at least April 2, 2025.

Allocation Mechanism

The distribution of the 15 billion ENA tokens is divided among five primary groups to balance long-term development with community participation.

The Ecosystem Development portion includes airdrops for the protocol's incentive campaigns. For instance, 5% of the total supply was allocated to the first "Shard Campaign," and a total of 10% has been earmarked for the first and second seasons of rewards.

Usage and Incentive Mechanism

ENA serves primarily as a governance token, allowing holders to influence the protocol's operational and risk parameters.

Governance Rights

Token holders can vote on several key measures, including:

• Risk management frameworks and USDe backing composition.
• Exposure limits for specific exchanges and custodians.
• DEX and cross-chain integrations.
• Prioritization of new products and community grants.
• The sizing of the Reserve Fund and the distribution of yield between sUSDe holders and the Reserve Fund.

Incentive Campaigns

Ethena uses "Points" (previously Shards, now Sats) to incentivize liquidity and protocol growth. Users earn these points by:

• Minting and Holding USDe: Basic participation.
• Locking USDe: Higher rewards for committed capital.
• Providing Liquidity: Incentives for LPing on platforms like Curve and Uniswap.
• Staking ENA (sENA): Staked ENA acts as a liquid receipt token that accrues value from ecosystem applications and potential future airdrops from partner protocols like Ethereal and Derive.

Locking and Unlocking Mechanism

To ensure long-term alignment, Ethena employs strict vesting schedules for institutional and team allocations, as well as specific conditions for airdrop recipients.

Core Contributors and Investors

Both groups are subject to the same restrictive schedule:

• Cliff: A 1-year cliff where 0% of tokens are unlocked.
• Vesting: Following the cliff, 25% of the allocation unlocks, with the remaining 75% vesting linearly on a monthly basis over the subsequent 3 years.

Airdrop Vesting

For participants in the Shard Campaign, a specific locking mechanism was applied to large holders:

• Top 2,000 Wallets: Users in the top 2,000 of the leaderboard were required to undergo a six-month linear vesting period for 50% of their airdropped ENA.

USDe and sUSDe Unlocking

While not ENA tokens themselves, the protocol's core assets have their own liquidity constraints:

• Unstaking Period: sUSDe holders or USDe lockers must undergo a seven-day cooldown period before they can withdraw their underlying assets.

Unlocking Timeline

The ENA token launch occurred on April 2, 2024. Based on the 1-year cliff for core contributors and investors, the first major institutional unlock event is scheduled for April 2025. Following this cliff, monthly linear unlocks will continue through 2028. Community-allocated tokens (Ecosystem and Foundation) are generally deployed according to DAO governance or specific campaign schedules, such as the conclusion of the Sats Campaign.