> ## Documentation Index > Fetch the complete documentation index at: https://docs.story.foundation/llms.txt > Use this file to discover all available pages before exploring further. # Staking Module > Modified staking module with reward multipliers for locked and unlocked tokens ## Abstract The staking module has been modified to accommodate for the following changes below. Refer to the Cosmos SDK's [staking module docs](https://docs.cosmos.network/main/build/modules/staking) for more information. ## Reward Multiplier ### Validators Validators can choose to accept either locked tokens or unlocked tokens as delegations. Validators for locked tokens are conditioned to half the inflation allocation of validators for unlocked tokens. Since each validator receives different inflation distribution based on delegations, the inflation distribution I_{v_i} for validator v_i in the rewards pool is calculated as follows:

where * I_{v_i} is the total inflationary token rewards for v_i * S_{v_i} is the staked tokens for v_i * M_{v_i} is the rewards multiplier for v_i * 0.5 for locked tokens * 1 for unlocked tokens * R_n is the total inflationary tokens allocated for the rewards pool in block n, calculated in the [mint](/network/node-architecture/cosmos-modules/mint-module) module ### Delegations Delegators can delegate with four different staking lock times, which results in different staking reward multiplier for each delegation (delegator-validator pair of stakes). The inflation distribution for each delegation D_i is calculated as follows:

where * S_{d_i} is the staked tokens of delegation d_i on validator v_d * M_{d_i} is the rewards multiplier of d_i on v_d * I_v is the total inflationary token rewards for v_d * C_v is the commission rate for v_d #### Time-weighted Reward Multiplier M_{d_i} * *Flexible* (no lockup): 1 * *Short* (90 days): 1.1 * *Medium* (360 days): 1.5 * *Long* (540 days): 2.0