# Interchain Staking

## Interchain Staking Module Overview

The **Interchain Staking (ICS) Module** is the core component in **Quicksilver** that enables **liquid staking** for external blockchains. By utilizing this module, users can deposit native assets from **IBC-connected** chains and receive tokenized representations of their staked positions (i.e., **qAssets**). The ICS module then manages the lifecycle of these staked tokens—from **deposits** and **auto-compounding of rewards** to **unbonding and redemption**—all while allowing users to choose their preferred validators through **intent signaling**.

### Key Objectives

1. **Liquid Staking on Remote Chains**\
   Allow users to stake assets on an external chain—such as Cosmos Hub (ATOM), Osmosis (OSMO), or Stars (STARS)—while retaining **liquidity** in the form of qAssets on Quicksilver.
2. **User Sovereignty & Validator Choice**\
   Grant users control over **which validators** secure their tokens, preserving **decentralization** and avoiding validator centralization.
3. **Efficient & Transparent Rewards**\
   Automate **reward accrual and distribution** so that qAsset holders benefit from staking yields, minus protocol fees or slashing events.
4. **Simplified Deposit & Redemption**\
   Provide a **straightforward** deposit process and a **clear path** to redeem qAssets for the underlying assets, respecting each chain’s unbonding rules.

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## Core Functions

1. **Deposits**
   * **IBC Transfer**: Users initiate a **deposit** by sending native tokens (e.g., ATOM) from the external chain to a **deposit account** controlled by the Quicksilver chain.
   * **qAsset Minting**: Once tokens arrive, the ICS module **mints** the corresponding qAsset (e.g., qATOM) to the user’s Quicksilver address, reflecting their newly staked position.
2. **Rewards Accrual & Auto-Compounding**
   * **Interchain Queries & Accounts**: The ICS module interacts with the remote chain via **Interchain Accounts (ICA)** and **Interchain Queries (ICQ)** to track delegations and collect rewards.
   * **Epoch-Based Compounding**: At regular intervals (epochs), the module **redeems** staking rewards from the remote chain and **restakes** them, increasing the user’s total staked position and adjusting the redemption rate to reflect these new rewards.
3. **Redemption (Unbonding)**
   * **Redemption Request**: When users wish to reclaim their native tokens, they submit a **MsgRequestRedemption** transaction on Quicksilver. The ICS module locks the corresponding qAssets and initiates the **unbonding** process on the external chain.
   * **Unbonding Period**: Once unbonded on the remote chain, the ICS module returns the redeemed tokens to the user’s wallet on that chain, **burning** the qAssets on Quicksilver.
4. **Intent Signaling & Delegation Strategy**
   * **Validator Selection**: The ICS module incorporates Quicksilver’s **Signaling Intent** feature, letting users specify a list of validators and desired allocation percentages on the remote chain.
   * **Rebalancing**: At each epoch, the module **aggregates** user preferences and **redelegates** as needed—within the limits of the remote chain’s redelegation constraints—to keep actual delegations aligned with users’ stated Intents.

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## ICS Lifecycle & Architecture

1. **Interchain Accounts (ICA)**
   * **Control**: The ICS module uses ICA to establish and manage one or more **controller accounts** on the remote chain.
   * **Actions**: These accounts perform **delegation**, **redelegation**, **claiming rewards**, and **unbonding** operations on behalf of Quicksilver users.
2. **Interchain Queries (ICQ)**
   * **Data Collection**: ICQ allows the ICS module to **query** chain-specific information—such as a validator’s total stake, slashing status, or reward balance—without requiring direct user intervention.
   * **Dynamic Adjustments**: The module uses query results to **rebalance** staking, apply **reward socialization**, and issue or burn qAssets.
3. **Redemption Rate & Reward Socialization**
   * **Redemption Rate**: Each qAsset tracks an ever-increasing redemption rate to reflect **auto-compounded** staking rewards.
   * **Socialized Outcomes**: If slashing occurs, or if a validator is tombstoned, the ICS module adjusts the redemption rate for **all qAsset holders** to maintain **fungibility**.
4. **Epochly Rebalancing**
   * **Intent Aggregation**: Each epoch, the ICS module calculates an **aggregate intent** (i.e., combined user preferences).
   * **Gradual Redelegation**: Because remote chains often limit how many redelegations can happen within a given time, the module migrates stake **incrementally** until it reaches the target distribution.

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## Benefits & Use Cases

1. **Liquid Staking on Any IBC-Connected Chain**\
   By leveraging Interchain Accounts, Quicksilver extends liquid staking capabilities to any **IBC-enabled** chain that supports **ICA** and **ICQ**.
2. **Enhanced DeFi Utility**\
   Users can **hold**, **trade**, or **deploy** qAssets across Cosmos DEXes, lending protocols, and more—**all while still earning** staking rewards.
3. **Improved Validator Decentralization**\
   The **Signaling Intent** feature nudges users to select diverse, high-performance validators, helping mitigate centralization risk and **strengthen network security**.
4. **Transparent, Automated Rewards**\
   The ICS module seamlessly handles **reward accrual** and **auto-compounding**, freeing users from the complexities of manual claiming or re-staking.

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## Future Developments

* **Support for Non-ICA Chains**\
  Quicksilver aims to **expand** ICS-like functionality to **IBC-connected chains** that don’t yet implement Interchain Accounts, broadening the reach of liquid staking beyond the Cosmos SDK ecosystem.
* **Integration with CosmWasm**\
  A forthcoming **CosmWasm** implementation on Quicksilver could enable **cross-chain smart contracts** that build on ICS logic—e.g., novel DeFi applications that manage multi-chain staking strategies automatically.

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## Conclusion

The **Interchain Staking (ICS) Module** is the backbone of Quicksilver’s **liquid staking** solution, providing a streamlined method for users to deposit tokens, earn rewards, and access liquidity—all while preserving **decentralization** through user-driven validator preferences. Through its integration with **ICA** and **ICQ**, Quicksilver’s ICS Module empowers a wide range of **cross-chain DeFi** possibilities, fostering a more secure and interconnected Cosmos ecosystem.