Crowdfund V1.0.0

Introduction

As the name suggests, the Crowdfund ADO is a smart contract that allows users to start a crowdfund for their projects by selling NFTs.

The owner of the contract can start the crowdfund by executing StartSale. Before starting the sale, they can use the contract to mint the tokens from the specified token_address in the InstantiateMsg. In order to be eligible for the sale, the NFT needs to be minted and owned by the crowdfund ADO.

We allow for owners other than the contract, incase the creator wants to set aside a few tokens for some other use, say airdrop, team allocation, etc., but only those which have the contract as the owner will be available to sell.

Every sale sets a min_tokens_sold which specifies the minimum number of tokens that need to be sold in order for the sale to be considered successful. This acts as an insurance for the buyers by allowing them to get a refund in case this goal was not achieved. If this threshhold is met, the owner can end the sale.

Ado_type: crowdfund

InstantiateMsg

Rust

pub struct InstantiateMsg {
    pub token_address: AndrAddr,
    pub can_mint_after_sale: bool,
    pub kernel_address: String,
    pub owner: Option<String>,
}

JSON

{
"token_address":"andr1...",
"can_mint_after_sale": true,
"kernel_address":"andr1..."
}

Name	Type	Desctription
token_address		The reference to the CW721 ADO that will mint the NFTs for the sale. Can be either the contract address or a VFS reference.
can_mint_after_sale	bool	A flag to whether minting is allowed after a sale has been done. Minting is never allowed during a sale.
kernel_address	String
owner	Option<String>	Optional address to specify as the owner of the ADO being created. Defaults to the sender if not specified.

ExecuteMsg

Mint

Mints a new token to be sold in a future sale. The message fields are defined and sent to the corresponding token contract defined as the token_address in the instantiation to mint. We use a vector of MintMsg to facilitate bulk minting for projects.

We allow for owners to be other than the contract incase the creator wants to set aside a few tokens for some other use, say airdrop, team allocation, etc... Only the tokens minted with the contract as the owner will be available to sell in the sale.

Only the contract owner can execute Mint.

Minting is only allowed before a sale starts.

The limit for the number of MintMsg is 100.

Unlike other mint messages, the crowdfund mint allows users to keep the owner field empty defaulting the owner to the crowdfund ADO, making it eligible for a sale.

Rust

pub enum ExecuteMsg {
 Mint(Vec<CrowdfundMintMsg>),
 }

JSON

{
"mint":[
 {
 "token_id":"myid",
 "owner":"andr1...",
 "token_uri":"https://gateway.pinata.cloud/ipfs...",
  "extension": {
            "publisher": "Andromeda"
        }
     }
  ]
 }

CrowdfundMintMsg

pub struct CrowdfundMintMsg {
    pub token_id: String,
    pub owner: Option<String>,
    pub token_uri: Option<String>,
    pub extension: TokenExtension,
}

Name	Type	Description
token_id	String	Unique Id of the NFT.
owner	Option<String>	The owner of the newly minted NFT. In order to be included in the sale, the owner field should be kept empty or set as the crowdfund contract.
token_uri	Option<String>	Universal resource identifier for this NFT Should point to a JSON file that conforms to the CW721 Metadata JSON Schema.
extension		Any custom extension used by this contract.

StartSale

Initiates a new crowdfund with the specified information.

Only available to the contract owner.

An Expiration must be set and not in past date.

A sale should not be already ongoing.

Rust

pub enum ExecuteMsg {
 StartSale {
        start_time: Option<MillisecondsExpiration>,
        end_time: MillisecondsExpiration,
        price: Coin,
        min_tokens_sold: Uint128,
        max_amount_per_wallet: Option<u32>,
        recipient: Recipient,
    },

JSON

{
"start_sale":{
 "start_time":10048328053820324,
 "end_time":11048328053820324,
  "price":{
    "denom":"uandr",
    "amount":"10000"
    },
  "min_tokens_sold":"1000",
  "max_amount_per_wallet":10,
  "recipient":{
   "address":"andr1..."
  }
 }
}

Name	Type	Description
start_time
end_time
price		The price per token.
min_tokens_sold	Uint128	The minimum amount of tokens sold to go through with the sale.
max_amount_per_wallet	Option<u32>	The amount of tokens a wallet can purchase, default is 1.
recipient		The recipient of the funds if the sale met the min_tokens_sold.

Purchase

Purchases tokens based on the specified limit or amount of funds sent.

A sale needs to be in progress in order to purchase tokens.

If number_of_tokens is not specified, the maximum number of tokens are purchased based on the funds allocated (Unless we reach the maximum allowed).

Rust

 pub enum ExecuteMsg{
 Purchase {
     number_of_tokens: Option<u32>,
    }
  }

JSON

{
"purchase":{
  "number_of_tokens": 10
    }
}

Name	Type	Description
number_of_tokens	Option<u32>	An optional limit to the number of tokens to purchase. If not specified, the maximum number of tokens are purchased based on the funds allocated (Unless we reach the maximum allowed).

PurchaseByTokenId

Purchases a token with the specified token_id.

Rust

 pub enum Execute {
 PurchaseByTokenId {
        token_id: String,
    },
 }

JSON

{
"purchase_token_by_id":{
    "token_id":"myid"
    }
}

Name	Type	Descripton
token_id	String	The token Id of the NFT to purchase.

ClaimRefund

If the minimum number of tokens to be sold was not reached. The user can claim their own refund. Refunding will return the funds to the buyer and burn the token.

Rust

  pub enum ExecuteMsg{
  ClaimRefund {},
  }

JSON

{
"claim_refund":{}
}

EndSale

Ends the sale. In the case that the minimum number of tokens to be sold is not achieved, refunds are sent to the buyers and tokens are burnt. If the minimum amount of tokens sold was achieved, the tokens are sent to the buyers and the funds to the recipient.

The sale can only be ended if the expiration of the sale has been reached or the threshhold of min tokens sold is met.

The EndSale message needs to be called twice. Once for distribution of NFTs and another for distribution of funds.

Rust

 pub enum ExecuteMsg{
   EndSale {
        limit: Option<u32>,
    }
}

JSON

{
"end_sale":{
  "limit": 200
    }
 }

Name	Type	Description
limit	Option<u32>>	An optional limit on the number of transferred tokens in case the sale was a success, or the number of refunds to issue in case the sale did not succeed (min amount not reached).

UpdateTokenContract

Updates the token address of the CW721 used by the Crowdfund to a new one.

Only available to the owner of the ADO.

Rust

pub enum ExecuteMsg {
    UpdateTokenContract { address: AndrAddr },
    }

JSON

{
"update_token_contract":{
    "address":"andr1..."
    }
}

Name	Type	Description
address		The new token address to be used in the crowdfund.

Base Executes

The rest of the execute messages can be found in the ADO Base section.

QueryMsg

State

Queries the state of the sale. State is only available once a sale has started.

Rust

pub enum QueryMsg {
    #[returns(State)]
    State {},
}

JSON

{
"state":{}
}

The response is stored in a State struct:

Rust

pub struct State {
    pub expiration: Milliseconds,
    pub price: Coin,
    pub min_tokens_sold: Uint128,
    pub max_amount_per_wallet: u32,
    pub amount_sold: Uint128,
    pub amount_to_send: Uint128, 
    pub amount_transferred: Uint128,
    pub recipient: Recipient,
}

JSON

{
 "expiration":100384234382943243,
  "price":{
    "denom":"uandr",
    "amount":"10000"
    },
  "min_tokens_sold":"1000",
  "max_amount_per_wallet":10,
  "amount_sold":"600",
  "amount_to_send":"100000",
  "amount_transferred":"300",
  "recipient":{
    "addr":"andr1..."
  }
}

Name	Type	Description
expiration		The expiration denoting when the sale ends as a timestamp in milliseconds.
price		The price of each token.
min_tokens_sold	Uint128	The minimum number of tokens sold for the sale to go through.
max_amount_per_wallet	u32	The max number of tokens allowed per wallet.
amount_sold	Uint128	Number of tokens sold.
amount_to_send	Uint128	The amount of funds to send to recipient if sale successful. This already takes into account the royalties and taxes.
amount_transferred	Uint128	Number of tokens transferred to purchasers if sale was successful.
recipient		The recipient of the raised funds if the sale is successful.

Config

Queries the configuration of the contract.

Rust

pub enum QueryMsg {
    #[returns(Config)]
    Config {},
}

JSON

{
"config":{}
}

The response is stored in a Config struct:

Rust

pub struct Config {
    pub token_address: String,
    pub can_mint_after_sale: bool,
}

JSON

{
"token_address":"andr1...",
"can_mint_after_sale": true
}

Name	Type	Description
token_address	String	The address of the token contract whose tokens are being sold.
can_mint_after_sale	bool	Whether or not the owner can mint additional tokens after the sale has been conducted.

AvailableTokens

Queries the available tokens for sale.

Rust

pub enum QueryMsg {
     #[returns(Vec<String>)]
     AvailableTokens {
            start_after: Option<String>,
            limit: Option<u32>,
        }
 }

JSON

{
"available_tokens":{}
}

Name	Type	Description
start_after	Option<String>	Optional parameter to specify which Token to start from. If none specified index 0 will be used. Used for pagination.
limit	Option<u32>	Limit to number of available tokens to query.

Returns a Vec<String> containing the token Ids of the available NFTs for sale.

IsTokenAvailable

Checks if the token with the specified token_id is available for sale.

Rust

pub enum QueryMsg {
  #[returns(bool)]
  IsTokenAvailable {
        id: String,
    }
}

JSON

{
"is_token_available":{
    "id":"token_id"
    }
 }

Name	Type	Description
id	String	The Id of the token to check.

Returns a bool response specifyi ng whether the token is available for purchase or not.

Base Queries

The rest of the query messages can be found in the ADO Base section.