Using the Launchpad

Deployment
​https://explorer.hiro.so/txid/SP3K8BC0PPEVCV7NZ6QSRWPQ2JE9E5B6N3PA0KBR9.alex-launchpad-v1-1?chain=mainnet​
Listing
contract-owner calls create-pool with the following parameters.
launch-token-trait : the trait reference of project token (e.g. ALEX)
payment-token-trait : trait reference of payment token (e.g. sUSDT)
launch-owner : address of the project that launches the project token
launch-tokens-per-ticket : number of project token per ticket 
price-per-ticket-in-fixed : payment token deposit required per ticket (in 8-digit fixed notation)
activation-threshold : number of tickets required to activate the launch
registration-start-height : start (inclusive) block-height of registration period
registration-end-height : end (inclusive) block-height of registration period
claim-end-height : end (inclusive) block-height of claim (i.e. lottery) period
apower-per-ticket-in-fixed : apower required for each ticket (can be a list, in 8-digit fixed notation)
registration-max-tickets : maximum number of ticket an address can register
fee-per-ticket-in-fixed : listing fee charged by the platform as percentage of price-per-ticket-in-fixed (in 8-digit fixed notation)
Launch price of project token in payment token = launch-tokens-per-ticket / price-per-ticket-in-fixed
Project Token Transfer
Once the pool is created, and before the registration period starts, launch-owner must call add-to-position with the following parameters:
launch-id : id of the launch
tickets : number of tickets launch-owner wants to allocate to
launch-token-trait : trait reference of project token
Total raise for project token = tickets x launch-tokens-per-ticket x Launch price of token.
Upon calling add-to-position, (tickets x launch-tokens-per-ticket) of project token will be transferred from launch-owner to the contract.
Registration
Participants call register with the following parameters:
launch-id : id of the launch
tickets : number of ticket the participant wants to register
payment-token-trait : trait reference of payment token
Assuming (1) registration period has started, (2) registration period has not ended and (3) the participant is not already registered, the contract will register the participant and:
burn the required number of apower from the participant's wallet, and
transfer tickets x price-per-ticket-in-fixed of payment token from the participant's wallet to the contract.
Lottery
The lottery will be drawn one block after the registration ended. The claim/lottery period ends at claim-end block-height. 
contract-owner or launch-owner will draw the lottery off-chain using the prescribed rule and call claim repeatedly with the following parameters
launch-id : id of the launch
input : list of participants who won the lottery (up to 200)
launch-token-trait : trait reference of project token
payment-token-trait : trait reference of payment token
Upon calling claim, assuming (1) registration period has ended, (2) not all tickets are already won, (3) the launch is activated and (4) the claim/lottery period has not ended yet, the contract will verify the validity of input and 
transfer the proceeds of payment token, net of fee, to launch-owner,
transfer fee to the platform, and
transfer the appropriate number of project token to the winners.
Refund will be processed by either contract-owner or launch-owner in a similar manner to the claim.
Last modified 3mo ago