Ethena is a next-generation stablecoin project that combines elements of a stablecoin and a yield-bearing "internet bond," aiming to provide users with both stability and potential returns. It issues USDe, a stablecoin backed by assets like ether, bitcoin, and Solana, and ensures stability through the use of short perpetual futures, which are financial contracts that help maintain neutral exposure to these cryptocurrencies. To enhance yields, Ethena also employs strategies like staking ether and leveraging funding rates—returns on capital tied up in financial contracts. Ethena incentivizes user participation and growth of its ecosystem through "shards," which are essentially points redeemable for various forms of utility within the network. Additionally, the project integrates with the Solana blockchain to tap into its staking capabilities and expand the collateral options for its stablecoin products. This approach mirrors other financial technology platforms attempting to capture interest and usability within vibrant blockchain ecosystems.

The Ethena project was founded by Guy Young and was announced in July 2023. Guy Young, who serves as the Founder and CEO of Ethena Labs, has over six years of investment experience at Cerberus Capital Management, a global leader in alternative investing. Arthur Hayes, who is a Founding Advisor, brings his experience as a Co-Founder and former CEO of BitMEX, a well-known centralized cryptocurrency exchange. Hayes has also been involved with 100x Group and Maelstrom, and began his career in finance as an associate at Deutsche Bank and Citi. Ethena aims to establish itself as a crypto-native "Internet Bond" that is censorship-resistant, scalable, and stable. The project is headquartered in Lisbon, Portugal.

Yes, you can stake tokens in the Ethena project. The primary token involved in staking is USDe. Here's a breakdown:

• Stakable Token: USDe.

• Staking Process:

  • Users can stake their USDe into the Ethena staking contract.
  • Upon staking, you receive an equivalent value of staked USDe as ERC-20 sUSDe tokens.

• Rewards for Stakers:

  • sUSDe tokenholders earn yield from:
    • The underlying staked ETH.
    • The funding rate from short positions.
  • The yield increases the value of sUSDe over time.
  • An annual percentage yield (APY) of 37.10% was reported as of early 2024.

• Additional Opportunities:

  • Ethena enables locking USDe to earn boosted rewards called Sats in the Ethena’s Sats Campaign.

Overall, Ethena's staking mechanism relies on delta-hedging strategies to provide yield to those holding staked positions.

Ethena has not experienced any notable hacks, exploits or outages where a significant amount of money was lost directly from its native protocol or network. However, Ethena Labs confirmed that their stablecoin, Ethena USDe, was indirectly affected by a $1.4 billion hack on the Bybit exchange, which impacted various cryptocurrencies. Despite the exposure, Ethena assured that none of USDe’s backing assets were held on Bybit, as they are secured with off-exchange custodian solutions. The potential financial impact was mitigated by maintaining a reserve fund that exceeds the exposure amount source.

Ethena has taken several security measures to ensure the integrity and resilience of its smart contracts, focusing on unique aspects of its protocol. Here are the key security measures and any vulnerabilities:

Security Measures:

1. Whitelist System: Only whitelisted wallet addresses can mint and redeem USDe, ensuring only authorized and non-malicious actors can interact with these functions.
2. Secure Asset Handling: Backing assets can only be sent to whitelisted OES (Oracle Exchange Services) provider partners, preventing unauthorized diversion of protocol funds and maintaining legal and governance protections.
3. Multi-Signature Transactions: Updating whitelisted addresses requires a multi-sig transaction involving Ethena team members and external parties, which adds an extra layer of approval and security.
4. Secure Key Generation: Mint/Redeem smart contract keys are generated in a secure, air-gapped manner, preventing any single individual from having full access.
5. Pricing Verification: Internal pricing is verified with external sources like Pyth and Redstone to ensure integrity.
6. Order Validity Checks: Multiple checks are in place to ensure the integrity of system orders.

Specific to USDe Staking:

1. ERC4626 Token Vault Standard: Utilizes the OpenZeppelin battle-tested ERC4626 token vault standard for secure and trustable code.
2. Unstake Cooldown Period: Tokens are settled for USDe immediately, but withdrawal requires waiting out a cooldown period to prevent exploitation within a single block.
3. Linear Vesting: Rewards vest over eight hours to prevent sandwich attacks.
4. Minimum Supply Requirement: sUSDe requires a minimum $1 non-zero supply to prevent donation attacks.

Vulnerabilities and Incidents:

• Domain Compromise: In September 2024, the Ethena domain registrar was compromised, leading to a front-end exploit on the website. The protocol itself remained secure, and customer funds were unaffected.
• Discord Server Hack: In July 2024, a Discord server hack led to impersonation and malicious link sharing, but no impact on the protocol's underlying security.

No major vulnerabilities, hacks, or attacks have impaired Ethena's smart contract security, emphasizing a strong track record outside of front-end and social media compromises Ethena Security Measures.

Ethena has undergone several audits by different auditors. Here are the audits listed in chronological order with the most recent audits first:

• May 2024: Independent audit by Pashov on V2 of contracts. No critical or high-level issues identified.
• November 13, 2023: Public audit by Code4rena. No critical or high-level issues identified.
• October 22, 2023: Independent audit by Pashov on V1 of contracts. No critical or high-level issues identified.
• October 18, 2023: Audit by Quantstamp on V1 of contracts. No critical or high-level issues identified.
• October 18, 2023: Audit by Spearbit on V1 of contracts. No critical or high-level issues identified.
• July 2023: Initial audit by Zellic on V1 of contracts. No critical or high-level vulnerabilities found.