Staking

The Staking Contract contains the logic for LP Token staking and reward distribution. ANC tokens allocated for as liquidity incentives are distributed pro-rata to stakers of the ANC-UST Terraswap pair LP token.

Config

Name	Type	Description
anchor_token	CanonicalAddr	Contract address of Anchor Token (ANC)
staking_token	CanonicalAddr	Contract address of ANC-UST Terraswap pair LP token
distribution_schedule	Vec<(u64, u64, Uint128)>	ANC distribution schedule for LP token stakers (start block [block], end block [block], distribution amount)

InstantiateMsg

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct InstantiateMsg {
    pub anchor_token: String,
    pub staking_token: String,
    pub distribution_schedule: Vec<(u64, u64, Uint128)>, 
}

JSON

Name	Type	Description
anchor_token	String	Contract address of Anchor Token (ANC)
staking_token	String	Contract address of ANC-UST Terraswap pair LP token
distribution_schedule	Vec<(u64, u64, Uint128)>	ANC distribution schedule for LP token stakers (start block [block], end block [block], distribution amount)

ExecuteMsg

Receive

Can be called during a CW20 token transfer when the Staking contract is the recipient. Allows the token transfer to execute a Receive Hook as a subsequent action within the same transaction.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum ExecuteMsg {
    Receive {
        sender: String, 
        amount: Uint128, 
        msg: Binary, 
    }
}

JSON

Name	Type	Description
sender	String	Sender of the token transfer
amount	Uint128	Amount of tokens received
msg	Binary	Base64-encoded string of JSON of Receive Hook

Unbond

Unbonds specified amount of ANC-UST Terraswap LP tokens and transfers them to the message sender.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum ExecuteMsg {
    Unbond {
        amount: Uint128, 
    }
}

JSON

Name	Type	Description
amount	Uint128	Amount of LP tokens to unbond

Withdraw

Withdraws user's accrued LP token staking rewards.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum ExecuteMsg {
    Withdraw {}
}

JSON

Name	Type	Description

MigrateStaking

Migrates ANC LP incentives to a new LP token staking contract.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum ExecuteMsg {
    MigrateStaking {
        new_staking_contract: String, 
    }
}

JSON

Key	Type	Description
new_staking_contract	String	Contract address of new LP staking contract

Receive Hooks

Bond

WARNING

Sending LP tokens to the Staking contract without issuing this hook will lead to PERMANENT LOSS OF FUNDS.

Bonds LP tokens of the ANC-UST Terraswap pair.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum Cw20HookMsg {
    Bond {}
}

JSON

Name	Type	Description

QueryMsg

Config

Gets the Staking contract configuration.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum QueryMsg {
    Config {}
}

JSON

Name	Type	Description

ConfigResponse

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct ConfigResponse {
    pub anchor_token: String,
    pub staking_token: String,
    pub distribution_schedule: Vec<(u64, u64, Uin128)>, 
}

JSON

Name	Type	Description
anchor_token	String	Contract address of Anchor Token (ANC)
staking_token	String	Contract address of ANC-UST Terraswap pair LP token
distribution_schedule	Vec<(u64, u64, Uint128)>	ANC distribution schedule for LP token stakers (start block [block], end block [block], amount)

State

Gets state information for the specified block number.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum QueryMsg {
    State {
        block_height: Option<u64>, 
    }
}

JSON

Name	Type	Description
block_height*	u64	Current block number [block]

* = optional

StateResponse

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct StateResponse {
    pub last_distributed: u64, 
    pub total_bond_amount: Uint128, 
    pub global_reward_index: Decimal,
}

JSON

Name	Type	Description
last_distributed	u64	Block number when rewards where last distributed [block]
total_bond_amount	Uint128	Total amount of bonded LP tokens by all stakers
global_reward_index	Decimal	Global reward index for LP staking rewards

StakerInfo

Gets reward information for the specified LP token staker.

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
#[serde(rename_all = "snake_case")]
pub enum QueryMsg {
    StakerInfo {
        staker: String, 
        block_height: Option<u64>, 
    }
}

JSON

Name	Type	Description
staker	String	Address of LP token staker
block_height*	u64	Current block number [block]

* = optional

StakerInfoResponse

Rust

#[derive(Serialize, Deserialize, Clone, Debug, PartialEq, JsonSchema)]
pub struct StakerInfoResponse {
    pub staker: String,
    pub reward_index: Decimal,
    pub bond_amount: Uint128,
    pub pending_reward: Uint128,
}

JSON

Name	Type	Description
staker	String	Address of LP token staker
reward_index	Decimal	Reward index of staker
bond_amount	Uint128	Amount of LP tokens bonded by staker
pending_rewards	Uint128	Amount of pending rewards of staker