Overview
Overview
There are two ways a user can stake their VC on VinuChain:
Stake for APY (delegating).
Stake for Payback (zero gas fee transactions).
A user can separately stake for both options if they wish, or just one, on VinuScan.
Stake for APY (Delegating)
When a user stakes for APY, they are delegating their VC to a validator to earn a portion of block rewards. In exchange, the validator receives 15% of the staker's rewards.
VinuChain uses a fluid staking model where stakers either can stake without a lock-up period for the minimum APR or select a lock-up period between 14 to 365 days for an increased APR.
The rewards percentage increases linearly with time, rewarding the most committed stakers more. This way, the reward schedule combines long-term sustainability for the network and flexibility for stakers.
Example:
Assuming you earn 6.00% on a stake of 1,000,000 VC, you'll receive 1,000,000 * 0.06 * (1-0.15) = 51000 VC per year.
Stake for Payback (zero gas fee transactions)
When a user stakes for Payback, they are staking VC to be able to have their gas fees refunded for a number of transactions. The refunding wallet must meet the Payback contract's current minStake() before refunds are available. On the corrected testnet PaybackV2 deployment, minStake() starts at 1000 VC; the Quota owner can update this parameter with setMinStake(uint256). Below the current minimum, transactions still pay normal gas and show feeRefund: 0x0.
On testnet PaybackV2, VinuChain supports staking VC from one funding wallet for another receiver wallet. The receiver wallet receives Payback quota credit and gas refunds for transactions it signs once the receiver wallet's total Payback stake reaches minStake(). The funding wallet keeps ownership of the VC it funded and must use unstakeFor(receiver, amount) to begin withdrawing that stake back to itself; the receiver has no claim to third-party-funded stake.
The Payback quota is dynamic to counteract spam:
The more VC staked for Payback by a single user, the more gas fee refunds that user will be entitled to.
The more VC staked for Payback in total from all users combined, the less gas fee refunds each user will be entitled to.
The minimum stake is only an eligibility floor, not a spam throttle that grows automatically. Each refunded transaction consumes that wallet's available Payback quota for the epoch; once the wallet's quota is exhausted, later transactions still pay normal gas and receive a partial refund or
feeRefund: 0x0until quota accrues again.When network congestion pushes the base fee above the chain-configured floor, Payback refunds are suppressed so fee escalation can still deter spam.
The Payback initiative allows VinuChain to offer the advantage of zero fee transactions to willing users.
Rewards
In the fluid staking model, your effective APR:
Increases proportionally with your lock-up period.
Decreases proportionally with the average lock-up period of all stakers.
Decreases proportionally with the total amount of VC staked by all stakers.
How to receive rewards
There are two ways to participate in staking
Passive
+
-
Minimum requirements
1 VC
200,000 VC
Needed expertise
None
DevOps
Rewards
Staking rewards minus a 15% fee to delegated validator
Staking rewards plus a 15% fee from delegators' rewards
Running a validator node earns more rewards but requires active management and DevOps experience.
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