Staking Contract

Handles staking, unstaking, and rebase distribution.

Details

Property	Value
Extends	OP_NET
Epoch	144 blocks (~1 day)

Storage

slohmAddress: StoredAddress
sSlohmAddress: StoredAddress
treasuryAddress: StoredAddress
lastRebaseBlock: StoredU256
epochLength: StoredU256        // Default: 144 blocks
rewardRate: StoredU256         // Rewards per epoch

Key Methods

stake(amount)

function stake(amount: u256): void {
    // Pull SLOHM from user
    SLOHM.transferFrom(sender, this, amount);
    // Mint sSLOHM to user (1:1)
    sSLOHM.mint(sender, amount);
}

unstake(amount)

function unstake(amount: u256): void {
    // Burn sSLOHM from user
    sSLOHM.burn(sender, amount);
    // Transfer SLOHM back to user
    SLOHM.transfer(sender, amount);
}

rebase()

function rebase(): void {
    // Check epoch elapsed
    require(block.number >= lastRebaseBlock + epochLength);
    // Get rewards from treasury
    const rewards = Treasury.mintRewards(rewardRate);
    // Distribute via sSLOHM index increase
    sSLOHM.rebase(rewards);
    // Update last rebase block
    lastRebaseBlock = block.number;
}

Admin Functions

Function	Access	Description
setRewardRate	Multisig	Change reward rate
setEpochLength	Multisig	Change epoch duration

View Functions

• nextRebaseBlock() - When next rebase can occur
• canRebase() - Whether rebase is available