[SIPS-099] Co-Incentives Proposal for Turbo swETH

[SIPS-099] Co-Incentives Proposal for Turbo swETH

This forum post is to discuss the upcoming Governance proposal for liquidity incentives on the Turbo swETH Cellar, which will go up for vote on Thursday, December 14, 2023.


This proposal is intended to authorize a one-time transfer of 75,000 SOMM from the community pool to the CellarStaking contract, which will be used as co-incentivizes for cellar depositors on Ethereum Mainnet. This program will distribute the authorized amount of tokens over a period of 30 days, starting at the date this proposal passes and is enacted. The total amount of tokens for the proposed program represents 0.062% of the tokens in the community pool.

This proposal is the third month of a co-incentive plan with the Swell team. The requested amount of approximately $15,000 in SOMM is matched with an equivalent amount in swETH from Swell. In the future, Sommelier may launch similar incentive programs with different parameters. Any future incentive program falls outside the scope of this governance action and will require a new proposal.

In order to deliver the swETH incentives to the vault, a vesting position needs to be added to the Turbo swETH vault. This proposal will also be authorizing the addition of the vesting adaptor and vesting contract to the Turbo swETH vault.

swETH vesting contract: 0xda832C59Ba8054d547e6C9248c146A2Fc1ed1854
Vesting adaptor: 0x3b98BA00f981342664969e609Fb88280704ac479

The tokens prescribed by the program will be distributed pro rata to users on Ethereum Mainnet who elect to bond TurboSWETH in Sommelier’s staking contract. The CellarStaking smart contract (cellar-staking/CellarStaking.sol at main · PeggyJV/cellar-staking · GitHub) governs the bonding of TurboSWETH and the distribution of the tokens reserved for SOMM rewards. Pro rata allocation is determined based on share of the pool, where that share is equal to the amount of the user’s TurboSWETH tokens deposited, multiplied by a “boost” determined by the amount of time those cellar shares are locked for. Shares receive a 100% boost by locking for 14 days.

This smart contract, 0x69374d81fDc42adD0Fe1Dc655705e40b51B6681b, is based on canonical staking conventions used across the Ethereum Virtual Machine, principally the Synthetix staking rewards contract, originally developed in 2018. Variations of this code have secured billions of dollars of rewards across various EVM-compatible blockchains. The CellarStaking smart contract has been audited by Macro, with the audit available here: cellar-contracts/Macro_Cellar_CellarStaking_07_2022.pdf at main · PeggyJV/cellar-contracts · GitHub.

A multisig on Ethereum Mainnet, 0x7340D1FeCD4B64A4ac34f826B21c945d44d7407F and operated by Sommelier contributors, has administrative powers to govern the parameters of the program under a 4-of-7 signing scheme. The staking program must be funded with SOMM tokens directly from the Gravity Bridge; the multisig will not control any tokens reserved for the program.

The multisig is able to perform the following actions:

Schedule a certain amount of tokens owned by the contract for distribution (via notifyRewardAmount)

Set the duration of future rewards programs (via setRewardsDuration)

Set the minimum deposit in TurboSWETH tokens in order to participate in the rewards program (via setMinimumDeposit)

Pause and unpause bonding operations in emergency scenarios (via setPaused)

Trigger a one-time emergency shutdown on the contract, which stops new reward accumulation and allows all depositors to withdraw their assets immediately, disregarding unbonding times (via emergencyStop).

The multisig is currently composed of a mix of early developers on the Sommelier Chain and protocol, Ethereum smart contract developers, and cellar strategists:

Zaki Manian

Kristi Polsdam

Joseph Terrigno

Stephanie Vaughan

Sunand Raghupathi

Crispy Mangoes

Josh Kessler

This proposal, if accepted, will spend 75,000 SOMM from the community pool in order to fund the CellarStaking contract according to the parameters of this proposal. The multisig shall be responsible for enacting the program according to the parameters of this proposal once the requisite SOMM tokens are funded by the validators.

Reference Links:

CellarStaking Contract: cellar-staking/CellarStaking.sol at main · PeggyJV/cellar-staking · GitHub

CellarStaking deployment:


Ethereum Mainnet multisig: Safe{Wallet}

Macro Audit: cellar-contracts/Macro_Cellar_CellarStaking_07_2022.pdf at main · PeggyJV/cellar-contracts · GitHub

Synthetix Staking Rewards Contract: synthetix/StakingRewards.sol at v2.63.1-alpha · Synthetixio/synthetix · GitHub