# veSIS
## Introducing veSIS
veSIS provides an excellent opportunity to maximize the benefits of crypto assets. By staking SIS tokens, [the token of the Symbiosis protocol](https://docs.symbiosis.finance/main-concepts/symbiosis-sis-token), for a chosen period, users receive veSIS tokens, unlocking a range of exclusive benefits, including:
1. **Voting power in the Symbiosis DAO**\
For more information, refer to [governing-symbiosis](https://docs.symbiosis.finance/governance/governing-symbiosis "mention")
2. **Boosted APR for Liquidity Provision (currently on hold)**\
For more information, refer to [farming-on-octopools](https://docs.symbiosis.finance/reward-programs/farming-on-octopools "mention")
3. **Cross-chain fees reductions**\
Enjoy up to 60% reductions on cross-chain fees. For more information, [refer to this article](https://medium.com/@symbiosis_fi/introducing-a-fee-discount-system-for-vesis-holders-087e9172d6af)
4. **Rewards for staking SIS tokens** \
For more information, continue reading this document
## How it works
Users can stake SIS tokens in Symbiosis smart contracts on the following chains: Ethereum, BNB Chain, zkSync EVM, and Linea. The longer the SIS tokens are locked, the greater the rewards and voting power for the holders. Consider the following examples:
* 1 SIS locked for 4 years = 1.00 veSIS
* 1 SIS locked for 3 years = 0.75 veSIS
* 1 SIS locked for 2 years = 0.50 veSIS
* 1 SIS locked for 1 years = 0.25 veSIS
Rewards in SIS tokens are distributed weekly, on Thursday at 00:00 UTC.
{% hint style="info" %}
Rewards are accrued for the full week; for example, if you lock SIS tokens on a Friday, the first portion of rewards for that lock will be available in 13 days, not 6.
{% endhint %}
The number of veSIS tokens gradually decreases until, by the end of the lock period, there are 0 veSIS tokens, and the locked SIS tokens become available for withdrawal.
Users can claim their rewards in full at any time; there is no vesting period. Locked SIS tokens become available for withdrawal once the chosen lock period is over.
Weekly Rewards Calculation Example
**Given:**
* **Total Locked SIS**: 100,000
* **Total veSIS issued**: 1,000
**Personal:**
* **Your Locked SIS**: 500
* **Your veSIS**: 100
**Assumption:**
* **APR**: 10%, which translates to a weekly rate of approximately 0.192% (since 1 year approximately contains 52 weeks).
**Rewards Calculation:**
1. **Total Rewards for All Holders**:
Total Rewards = 100,000 × 0.00192 = 192 SIS
2. **Rewards per veSIS**:
Rewards per veSIS = 192 / 1,000 = 0.192 SIS
3. **Your Share**:
Your Rewards = 100 × 0.192 = 19.2 SIS
Thus, with 100 veSIS, you would receive **19.2 SIS** as your reward for the week.
## User Guide
There are two steps on the path to veSIS rewards, voting power, and other benefits:
1. **Getting SIS Tokens**: Obtain SIS tokens on Ethereum, the BNB Chain, zkSync Era, and/or Linea.
2. **Staking SIS Tokens**: Get veSIS tokens by staking SIS tokens on Ethereum, the BNB Chain, zkSync Era, or Linea. Users can stake SIS tokens on multiple networks simultaneously to maximize their benefits.
### Adding SIS token to the Token List in your Wallet
Before you start working with SIS tokens on Ethereum, the BNB Chain, zkSync Era, or Linea, you may need to add the token to the token list in your wallet. Here is the information you need:
#### $SIS on Ethereum
Contract address: 0xd38BB40815d2B0c2d2c866e0c72c5728ffC76dd9 \
`->` More information on [Etherscan](https://etherscan.io/token/0xd38bb40815d2b0c2d2c866e0c72c5728ffc76dd9)
#### $SIS on Arbitrum One
Contract address: 0x9e758b8a98a42d612b3d38b66a22074dc03d7370\
`->` More information on [Arbiscan](https://arbiscan.io/token/0x9e758b8a98a42d612b3d38b66a22074dc03d7370)
#### $SIS on BNB Chain
Contract address: 0xF98b660AdF2ed7d9d9D9dAACC2fb0CAce4F21835\
`->` Mori information on [BscScan](https://bscscan.com/token/0xF98b660AdF2ed7d9d9D9dAACC2fb0CAce4F21835)
#### $SIS on zkSync Era
Contract address: 0xdd9f72afED3631a6C85b5369D84875e6c42f1827\
`->` More information on [zkSync block explorer](https://zksync-era.l2scan.co/token/0xdd9f72afED3631a6C85b5369D84875e6c42f1827)
#### $SIS on Linea
Contract address: 0x6EF95B6f3b0F39508e3E04054Be96D5eE39eDE0d\
`->` More information on [LineaScan](https://lineascan.build/token/0x6EF95B6f3b0F39508e3E04054Be96D5eE39eDE0d)
#### $SIS on Scroll
Contract address: 0x1467b62A6AE5CdcB10A6a8173cfe187DD2C5a136\
`->` More information on [ScrollScan](https://scrollscan.com/address/0x1467b62A6AE5CdcB10A6a8173cfe187DD2C5a136)
How to add SIS token to a wallet's token list
Adding a custom token to a wallet's token list usually involves manually inputting the token's contract address and other details. Here's a general step-by-step process for most wallets:
1. **Open Your Wallet App**.
2. **Access the Token List**: Most wallets have a section where you can see a list of tokens. It could be labeled as "Tokens", "Assets", "Coin Management", or something similar.
3. **Add Custom Token Option**: Look for an "Add", "+", or "Manage Tokens" option. Once you click on it, there might be an option to "Add Custom Token" or "Add Token Manually".
4. **Enter Token Details**: Here you'll typically need:
* **Token Contract Address**: This is the unique address that represents the token on the blockchain. Make sure you copy it correctly and from a trusted source to avoid scams.
* **Token Symbol**: This is the shorthand symbol for the token (e.g., ETH for Ethereum, BTC for Bitcoin).
* **Decimals**: Most tokens use 18 decimals, but you should verify the exact number for your specific token.
5. **Confirm**: After entering the details, there should be a button to finalize the addition, something like "Add", "Confirm", or "Done".
6. **Verify**: Once added, go back to your token list and ensure the custom token is now visible with its proper details.
7. **Warning**: Always ensure you're adding the correct token. There are many scam tokens that might have similar names to legitimate ones. Always use trusted sources to get the contract address and other details.
Different wallets might have variations in the process, but this is the general approach. Always refer to the specific instructions provided by your wallet provider or their official documentation
### Joining the veSIS Program
To join the veSIS reward program and receive rewards, discounts, and voting power, you need to lock your SIS tokens first. When you lock SIS tokens, you will receive veSIS tokens in exchange. The more veSIS tokens you have, the more rewards and voting power you will receive.
You can lock SIS tokens on Ethereum, BNB chain and zkSync Era. If you have SIS tokens locked on more than one chain, the SIS tokens of all chains will be taken into account for voting and discounts.
To lock SIS tokens:
1. Navigate to [Symbiosis WebApp > Farming Section > the *veSIS* tab](https://rewards.symbiosis.finance/vesis/mainnet):\
\
\
— **Est.APR**: Estimated APR value based on the total number of SIS tokens locked at the time of calculation and the reward amount allocated weekly.\
— **Est.Weekly Rewards Pool**: Estimated value based on the previous week's rewards pool.\
— **veSIS Supply:** Total number of veSIS tokens minted to date.\
— **Locked:** Total number of locked SIS tokens.
2. Connect your wallet.
3. Select the blockchain (Ethereum, BNB chain, zkSync Era, or Linea) where you want to lock your SIS tokens: \
4. If you don't have SIS tokens click *Get SIS*: \
\
You will be redirected to the Swap section of Symbiosis WebApp. Once you have SIS tokens, navigate back to [Symbiosis WebApp > Farming Section > the *veSIS* tab](https://rewards.symbiosis.finance/vesis/mainnet).
5. Enter the number of SIS tokens you are going to lock, choose the duration of the lock (during this period, you will accrue rewards once a week, where 52 weeks are approximately 1 year), and press the *Confirm lock* button:\
6. If you see the *Switch network to Ethereum/BNB/zkSync Era/Linea* button, switch to the network by pressing the button and confirming the action in your connected wallet.
7. If you see *Approve SIS amount* button, approve the token use by pressing the button and approve the transaction in your wallet:\
8. Press the *Create Lock* button:\
\
\
**Important:** *APR*, *Weekly Rewards*, and *Total Rewards* listed for your lock are estimated values. They are calculated based on the total number of SIS tokens locked at the time of calculation and the reward amount allocated weekly.
9. Once the transaction of the lock creation is mined, you will return to the top page, where you will see your lock:\
\
\
Expand *More About Your Lock* to see details of the lock:\
{% hint style="info" %}
The number of veSIS tokens gradually decreases until, by the end of the lock period, there are 0 veSIS tokens, and the locked SIS tokens become available for withdrawal.
**Note:** Weekly and total rewards listed for your lock are estimated values. They are calculated based on the total number of SIS tokens locked at the time of calculation and the reward amount allocated last week.
{% endhint %}
Done\
**∎**
### Managing Your Lock
You can extend an existing lock and/or add more SIS tokens to an existing lock.
To change existing lock:
1. Navigate to [Symbiosis WebApp > Farming Section > the *veSIS* tab](https://rewards.symbiosis.finance/vesis/mainnet).
2. Connect your wallet.
3. Select the blockchain where you have created your lock:\
4. If you have a lock, you will see:\
5. Click the cogwheel icon:\
6. Here you can manage your lock: add more SIS tokens and/or increase the lock duration:\
\
\
**Amount:** To increase the amount of SIS tokens, enter the number of SIS tokens you want to add to your existing lock, and press the *Change Lock* button:\
\
\
**Time:** To extend the time, enter the amount of time you want to extend your lock, and press the *Change Lock* button:\
\
\
**Important:** It's not possible to change the lock duration and add more SIS tokens in a single operation.
7. Confirm the transaction in your wallet.
{% hint style="info" %}
Once the lock time has ended, the SIS tokens can be unlocked. Please claim rewards first, then you will be able to unlock SIS tokens.
{% endhint %}
Done\
**∎**
### Checking and Claiming Rewards
{% hint style="info" %}
* Rewards are distributed once a week, on Thursday at 00:00 UTC.
* Rewards are accrued for the full week. For example, if you lock SIS tokens on Friday, the first portion of the rewards for that lock will be available in 13 days, not 6.
* The number of veSIS tokens gradually decreases until, by the end of the lock period, there are 0 veSIS tokens, and the locked SIS tokens become available for withdrawal.
{% endhint %}
{% hint style="info" %}
The time depth of rewards information to be displayed is 50 weeks (approximately one year).
{% endhint %}
To check and claim your rewards:
1. Navigate to [Symbiosis WebApp > Farming Section > the *veSIS* tab](https://rewards.symbiosis.finance/vesis/mainnet).
2. Connect your wallet.
3. Select the blockchain where you have locked SIS tokens:\
4. If you have a lock you will see \
5. Press the *Claim Rewards* button, and confirm the transaction in your wallet. Once the transaction is mined, the reward tokens will be sent to your address. If you check your lock again, you will see that your lock information has been updated:\
\
\
**Important:** Due to the complexity of the smart contract, there is a maximum time depth of 50 weeks (approximately one year) for claiming rewards. If you haven't claimed rewards for more than 50 weeks, you will need to do so multiple times.
Done\
**∎**
### Withdrawing SIS tokens
Once the lock time is over, the SIS tokens can be unlocked.
Please claim rewards first, then you can withdraw your SIS tokens.
**Important:** Due to the complexity of the smart contract, there is a maximum time depth of 50 weeks (approximately one year) for claiming rewards. If you haven't claimed rewards for more than 50 weeks, you will need to do so multiple times.
---
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